Merge branch 'master' into suntech-fixes

149 files changed, 3620 insertions, 418 deletions

diff --git a/README.md b/README.md
index 9d58c51b9..633140be1 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ## Overview
 
-Traccar is an open source GPS tracking system. This repository contains Java-based back-end service. It supports more than 170 GPS protocols and more than 1500 models of GPS tracking devices. Traccar can be used with any major SQL database system. It also provides easy to use [REST API](https://www.traccar.org/traccar-api/).
+Traccar is an open source GPS tracking system. This repository contains Java-based back-end service. It supports more than 200 GPS protocols and more than 2000 models of GPS tracking devices. Traccar can be used with any major SQL database system. It also provides easy to use [REST API](https://www.traccar.org/traccar-api/).
 
 Other parts of Traccar solution include:
 
diff --git a/debug.xml b/debug.xml
index 796442364..f9515bb2b 100644
--- a/debug.xml
+++ b/debug.xml
@@ -10,9 +10,6 @@
     <entry key='web.debug'>true</entry>
     <entry key='web.console'>true</entry>
 
-    <entry key='geocoder.enable'>false</entry>
-    <entry key='geocoder.type'>ban</entry>
-
     <entry key='logger.console'>true</entry>
 
     <entry key='database.driver'>org.h2.Driver</entry>
diff --git a/schema/changelog-4.15.xml b/schema/changelog-4.15.xml
new file mode 100644
index 000000000..57b9b341a
--- /dev/null
+++ b/schema/changelog-4.15.xml
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+                      http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.4.xsd"
+  logicalFilePath="changelog-4.15">
+
+  <changeSet author="author" id="changelog-4.15">
+
+    <createTable tableName="tc_orders">
+      <column name="id" type="INT" autoIncrement="true">
+        <constraints primaryKey="true" />
+      </column>
+      <column name="uniqueid" type="VARCHAR(128)">
+        <constraints nullable="false" />
+      </column>
+      <column name="description" type="VARCHAR(512)" />
+      <column name="fromAddress" type="VARCHAR(512)" />
+      <column name="toAddress" type="VARCHAR(512)" />
+      <column name="attributes" type="VARCHAR(4000)">
+        <constraints nullable="false" />
+      </column>
+    </createTable>
+
+    <createTable tableName="tc_user_order">
+      <column name="userid" type="INT">
+        <constraints nullable="false" />
+      </column>
+      <column name="orderid" type="INT">
+        <constraints nullable="false" />
+      </column>
+    </createTable>
+
+    <addForeignKeyConstraint baseTableName="tc_user_order" baseColumnNames="userid" constraintName="fk_user_order_userid" referencedTableName="tc_users" referencedColumnNames="id" onDelete="CASCADE" />
+    <addForeignKeyConstraint baseTableName="tc_user_order" baseColumnNames="orderid" constraintName="fk_user_order_orderid" referencedTableName="tc_orders" referencedColumnNames="id" onDelete="CASCADE" />
+
+    <createTable tableName="tc_group_order">
+      <column name="groupid" type="INT">
+        <constraints nullable="false" />
+      </column>
+      <column name="orderid" type="INT">
+        <constraints nullable="false" />
+      </column>
+    </createTable>
+
+    <addForeignKeyConstraint baseTableName="tc_group_order" baseColumnNames="groupid" constraintName="fk_group_order_groupid" referencedTableName="tc_groups" referencedColumnNames="id" onDelete="CASCADE" />
+    <addForeignKeyConstraint baseTableName="tc_group_order" baseColumnNames="orderid" constraintName="fk_group_order_orderid" referencedTableName="tc_orders" referencedColumnNames="id" onDelete="CASCADE" />
+
+    <createTable tableName="tc_device_order">
+      <column name="deviceid" type="INT">
+        <constraints nullable="false" />
+      </column>
+      <column name="orderid" type="INT">
+        <constraints nullable="false" />
+      </column>
+    </createTable>
+
+    <addForeignKeyConstraint baseTableName="tc_device_order" baseColumnNames="deviceid" constraintName="fk_device_order_deviceid" referencedTableName="tc_devices" referencedColumnNames="id" onDelete="CASCADE" />
+    <addForeignKeyConstraint baseTableName="tc_device_order" baseColumnNames="orderid" constraintName="fk_device_order_orderid" referencedTableName="tc_orders" referencedColumnNames="id" onDelete="CASCADE" />
+
+  </changeSet>
+
+</databaseChangeLog>
diff --git a/schema/changelog-master.xml b/schema/changelog-master.xml
index df54737a2..245367de3 100644
--- a/schema/changelog-master.xml
+++ b/schema/changelog-master.xml
@@ -28,5 +28,6 @@
   <include file="changelog-4.10.xml" relativeToChangelogFile="true" />
   <include file="changelog-4.11.xml" relativeToChangelogFile="true" />
   <include file="changelog-4.13.xml" relativeToChangelogFile="true" />
+  <include file="changelog-4.15.xml" relativeToChangelogFile="true" />
 
 </databaseChangeLog>
diff --git a/setup/default.xml b/setup/default.xml
index 20bf515d2..a592bbbed 100644
--- a/setup/default.xml
+++ b/setup/default.xml
@@ -12,9 +12,12 @@
 
     <entry key='web.port'>8082</entry>
     <entry key='web.path'>./web</entry>
+    <entry key='web.persistSession'>false</entry>
 
-    <entry key='geocoder.enable'>false</entry>
-    <entry key='geocoder.type'>google</entry>
+    <entry key='geocoder.enable'>true</entry>
+    <entry key='geocoder.type'>nominatim</entry>
+    <entry key='geocoder.url'>https://us1.locationiq.com/v1/reverse.php</entry>
+    <entry key='geocoder.key'>pk.689d849289c8c63708068b2ff1f63b2d</entry>
 
     <entry key='logger.level'>info</entry>
     <entry key='logger.file'>./logs/tracker-server.log</entry>
@@ -48,6 +51,10 @@
         SELECT * FROM tc_positions WHERE deviceId = :deviceId AND fixTime BETWEEN :from AND :to ORDER BY fixTime
     </entry>
 
+    <entry key='database.selectPrecedingPosition'>
+        SELECT * FROM tc_positions WHERE deviceId = :deviceId AND fixTime &lt;= :time ORDER BY fixTime DESC LIMIT 1
+    </entry>
+
     <entry key='database.selectLatestPositions'>
         SELECT tc_positions.* FROM tc_positions INNER JOIN tc_devices ON tc_positions.id = tc_devices.positionid;
     </entry>
@@ -294,5 +301,12 @@
     <entry key='flexiblereport.port'>5227</entry>
     <entry key='thinkpower.port'>5228</entry>
     <entry key='stb.port'>5229</entry>
+    <entry key='b2316.port'>5230</entry>
+    <entry key='hoopo.port'>5231</entry>
+    <entry key='dualcam.port'>5232</entry>
+    <entry key='xexun2.port'>5233</entry>
+    <entry key='techtocruz.port'>5234</entry>
+    <entry key='flexapi.port'>5235</entry>
+    <entry key='dsf22.port'>5236</entry>
 
 </properties>
diff --git a/setup/package.sh b/setup/package.sh
index bb890fbd0..e5f976b79 100755
--- a/setup/package.sh
+++ b/setup/package.sh
@@ -39,7 +39,6 @@ warn () {
 
 VERSION=$1
 PLATFORM=${2:-all}
-export EXTJS_PATH=$(cd ../..; pwd)/ext-6.2.0
 PREREQ=true
 
 check_requirement () {
diff --git a/src/main/java/org/traccar/Context.java b/src/main/java/org/traccar/Context.java
index fe494dabf..aeba9c4c9 100644
--- a/src/main/java/org/traccar/Context.java
+++ b/src/main/java/org/traccar/Context.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,6 +38,7 @@ import org.traccar.database.MailManager;
 import org.traccar.database.MaintenancesManager;
 import org.traccar.database.MediaManager;
 import org.traccar.database.NotificationManager;
+import org.traccar.database.OrderManager;
 import org.traccar.database.PermissionsManager;
 import org.traccar.database.UsersManager;
 import org.traccar.geocoder.Geocoder;
@@ -53,6 +54,7 @@ import org.traccar.model.Geofence;
 import org.traccar.model.Group;
 import org.traccar.model.Maintenance;
 import org.traccar.model.Notification;
+import org.traccar.model.Order;
 import org.traccar.model.User;
 import org.traccar.notification.EventForwarder;
 import org.traccar.notification.NotificatorManager;
@@ -235,6 +237,12 @@ public final class Context {
         return maintenancesManager;
     }
 
+    private static OrderManager orderManager;
+
+    public static OrderManager getOrderManager() {
+        return orderManager;
+    }
+
     private static SmsManager smsManager;
 
     public static SmsManager getSmsManager() {
@@ -337,6 +345,8 @@ public final class Context {
 
         commandsManager = new CommandsManager(dataManager, config.getBoolean(Keys.COMMANDS_QUEUEING));
 
+        orderManager = new OrderManager(dataManager);
+
     }
 
     private static void initEventsModule() {
@@ -397,6 +407,8 @@ public final class Context {
             return (BaseObjectManager<T>) maintenancesManager;
         } else if (clazz.equals(Notification.class)) {
             return (BaseObjectManager<T>) notificationManager;
+        } else if (clazz.equals(Order.class)) {
+            return (BaseObjectManager<T>) orderManager;
         }
         return null;
     }
diff --git a/src/main/java/org/traccar/MainModule.java b/src/main/java/org/traccar/MainModule.java
index e1a4d6b1c..11100f66e 100644
--- a/src/main/java/org/traccar/MainModule.java
+++ b/src/main/java/org/traccar/MainModule.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2018 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ import org.traccar.config.Config;
 import org.traccar.config.Keys;
 import org.traccar.database.AttributesManager;
 import org.traccar.database.CalendarManager;
+import org.traccar.database.ConnectionManager;
 import org.traccar.database.DataManager;
 import org.traccar.database.DeviceManager;
 import org.traccar.database.GeofenceManager;
@@ -40,6 +41,7 @@ import org.traccar.geocoder.GisgraphyGeocoder;
 import org.traccar.geocoder.GoogleGeocoder;
 import org.traccar.geocoder.HereGeocoder;
 import org.traccar.geocoder.MapQuestGeocoder;
+import org.traccar.geocoder.MapTilerGeocoder;
 import org.traccar.geocoder.MapmyIndiaGeocoder;
 import org.traccar.geocoder.NominatimGeocoder;
 import org.traccar.geocoder.OpenCageGeocoder;
@@ -105,6 +107,11 @@ public class MainModule extends AbstractModule {
     }
 
     @Provides
+    public static ConnectionManager provideConnectionManager() {
+        return Context.getConnectionManager();
+    }
+
+    @Provides
     public static Client provideClient() {
         return Context.getClient();
     }
@@ -188,6 +195,8 @@ public class MainModule extends AbstractModule {
                     return new PositionStackGeocoder(key, cacheSize, addressFormat);
                 case "mapbox":
                     return new MapboxGeocoder(key, cacheSize, addressFormat);
+                case "maptiler":
+                    return new MapTilerGeocoder(key, cacheSize, addressFormat);
                 default:
                     return new GoogleGeocoder(key, language, cacheSize, addressFormat);
             }
@@ -390,8 +399,9 @@ public class MainModule extends AbstractModule {
     @Singleton
     @Provides
     public static GeofenceEventHandler provideGeofenceEventHandler(
-            IdentityManager identityManager, GeofenceManager geofenceManager, CalendarManager calendarManager) {
-        return new GeofenceEventHandler(identityManager, geofenceManager, calendarManager);
+            IdentityManager identityManager, GeofenceManager geofenceManager, CalendarManager calendarManager,
+            ConnectionManager connectionManager) {
+        return new GeofenceEventHandler(identityManager, geofenceManager, calendarManager, connectionManager);
     }
 
     @Singleton
diff --git a/src/main/java/org/traccar/api/resource/EventResource.java b/src/main/java/org/traccar/api/resource/EventResource.java
index e0ccf7020..34e4a94ce 100644
--- a/src/main/java/org/traccar/api/resource/EventResource.java
+++ b/src/main/java/org/traccar/api/resource/EventResource.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2016 - 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.traccar.api.resource;
 
 import java.sql.SQLException;
@@ -7,7 +22,9 @@ import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
+import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
 
 import org.traccar.Context;
 import org.traccar.api.BaseResource;
@@ -25,6 +42,9 @@ public class EventResource extends BaseResource {
     @GET
     public Event get(@PathParam("id") long id) throws SQLException {
         Event event = Context.getDataManager().getObject(Event.class, id);
+        if (event == null) {
+            throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).build());
+        }
         Context.getPermissionsManager().checkDevice(getUserId(), event.getDeviceId());
         if (event.getGeofenceId() != 0) {
             Context.getPermissionsManager().checkPermission(Geofence.class, getUserId(), event.getGeofenceId());
diff --git a/src/main/java/org/traccar/api/resource/OrderResource.java b/src/main/java/org/traccar/api/resource/OrderResource.java
new file mode 100644
index 000000000..77608a508
--- /dev/null
+++ b/src/main/java/org/traccar/api/resource/OrderResource.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.api.resource;
+
+import org.traccar.api.SimpleObjectResource;
+import org.traccar.model.Order;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+
+@Path("orders")
+@Produces(MediaType.APPLICATION_JSON)
+@Consumes(MediaType.APPLICATION_JSON)
+public class OrderResource extends SimpleObjectResource<Order> {
+
+    public OrderResource() {
+        super(Order.class);
+    }
+
+}
diff --git a/src/main/java/org/traccar/api/resource/PasswordResource.java b/src/main/java/org/traccar/api/resource/PasswordResource.java
index 20e8d768d..1868a6191 100644
--- a/src/main/java/org/traccar/api/resource/PasswordResource.java
+++ b/src/main/java/org/traccar/api/resource/PasswordResource.java
@@ -19,7 +19,7 @@ import org.apache.velocity.VelocityContext;
 import org.traccar.Context;
 import org.traccar.api.BaseResource;
 import org.traccar.model.User;
-import org.traccar.notification.FullMessage;
+import org.traccar.notification.NotificationMessage;
 import org.traccar.notification.TextTemplateFormatter;
 
 import javax.annotation.security.PermitAll;
@@ -53,8 +53,9 @@ public class PasswordResource extends BaseResource {
                 Context.getUsersManager().updateItem(user);
                 VelocityContext velocityContext = TextTemplateFormatter.prepareContext(null);
                 velocityContext.put("token", token);
-                FullMessage message = TextTemplateFormatter.formatFullMessage(velocityContext, "passwordReset");
-                Context.getMailManager().sendMessage(userId, message.getSubject(), message.getBody());
+                NotificationMessage fullMessage =
+                        TextTemplateFormatter.formatMessage(velocityContext, "passwordReset", "full");
+                Context.getMailManager().sendMessage(userId, fullMessage.getSubject(), fullMessage.getBody());
                 break;
             }
         }
diff --git a/src/main/java/org/traccar/api/resource/SessionResource.java b/src/main/java/org/traccar/api/resource/SessionResource.java
index e3c5d457f..60ce5490a 100644
--- a/src/main/java/org/traccar/api/resource/SessionResource.java
+++ b/src/main/java/org/traccar/api/resource/SessionResource.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,8 +57,19 @@ public class SessionResource extends BaseResource {
     @PermitAll
     @GET
     public User get(@QueryParam("token") String token) throws SQLException, UnsupportedEncodingException {
+
+        if (token != null) {
+            User user = Context.getUsersManager().getUserByToken(token);
+            if (user != null) {
+                Context.getPermissionsManager().checkUserEnabled(user.getId());
+                request.getSession().setAttribute(USER_ID_KEY, user.getId());
+                return user;
+            }
+        }
+
         Long userId = (Long) request.getSession().getAttribute(USER_ID_KEY);
         if (userId == null) {
+
             Cookie[] cookies = request.getCookies();
             String email = null, password = null;
             if (cookies != null) {
@@ -77,24 +88,20 @@ public class SessionResource extends BaseResource {
             if (email != null && password != null) {
                 User user = Context.getPermissionsManager().login(email, password);
                 if (user != null) {
-                    userId = user.getId();
-                    request.getSession().setAttribute(USER_ID_KEY, userId);
-                }
-            } else if (token != null) {
-                User user = Context.getUsersManager().getUserByToken(token);
-                if (user != null) {
-                    userId = user.getId();
-                    request.getSession().setAttribute(USER_ID_KEY, userId);
+                    Context.getPermissionsManager().checkUserEnabled(user.getId());
+                    request.getSession().setAttribute(USER_ID_KEY, user.getId());
+                    return user;
                 }
             }
-        }
 
-        if (userId != null) {
+        } else {
+
             Context.getPermissionsManager().checkUserEnabled(userId);
             return Context.getPermissionsManager().getUser(userId);
-        } else {
-            throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).build());
+
         }
+
+        throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).build());
     }
 
     @PermitAll
diff --git a/src/main/java/org/traccar/config/Keys.java b/src/main/java/org/traccar/config/Keys.java
index 1411e8a13..e8e0ff207 100644
--- a/src/main/java/org/traccar/config/Keys.java
+++ b/src/main/java/org/traccar/config/Keys.java
@@ -893,8 +893,11 @@ public final class Keys {
             Collections.singletonList(KeyType.GLOBAL));
 
     /**
-     * Filter records by Maximum Speed value in knots. Can be used to filter jumps to far locations even if they're
-     * marked as valid. Shouldn't be too low. Start testing with values at about 25000.
+     * Filter records by Maximum Speed value in knots. Can be used to filter jumps to far locations even if Position
+     * appears valid or if Position `speed` field reported by the device is also within limits. Calculates speed from
+     * the distance to the previous position and the elapsed time.
+     *
+     * Tip: Shouldn't be too low. Start testing with values at about 25000.
      */
     public static final ConfigKey<Integer> FILTER_MAX_SPEED = new ConfigKey<>(
             "filter.maxSpeed",
@@ -908,8 +911,20 @@ public final class Keys {
             Collections.singletonList(KeyType.GLOBAL));
 
     /**
-     * Time limit for the filtering in seconds. If the time difference between last position and a new one is more than
-     * this limit, the new position will not be filtered out.
+     * If false, the server expects all locations to come sequentially (for each device). Filter checks for duplicates,
+     * distance, speed, or time period only against the location that was last received by server.
+     *
+     * If true, the server expects locations to come at random order (since tracking device might go offline).
+     * Filter checks for duplicates, distance, speed, or time period against the preceding Position's.
+     * Important: setting to true can cause potential performance issues.
+     */
+    public static final ConfigKey<Boolean> FILTER_RELATIVE = new ConfigKey<>(
+            "filter.relative",
+            Collections.singletonList(KeyType.GLOBAL));
+
+    /**
+     * Time limit for the filtering in seconds. If the time difference between the last position was received by server
+     * and a new position is received by server is more than this limit, the new position will not be filtered out.
      */
     public static final ConfigKey<Long> FILTER_SKIP_LIMIT = new ConfigKey<>(
             "filter.skipLimit",
@@ -917,6 +932,7 @@ public final class Keys {
 
     /**
      * Enable attributes skipping. Attribute skipping can be enabled in the config or device attributes.
+     * If position contains any attribute mentioned in "filter.skipAttributes" config key, position is not filtered out.
      */
     public static final ConfigKey<Boolean> FILTER_SKIP_ATTRIBUTES_ENABLE = new ConfigKey<>(
             "filter.skipAttributes.enable",
diff --git a/src/main/java/org/traccar/database/DataManager.java b/src/main/java/org/traccar/database/DataManager.java
index de6da8f23..ebd0dcade 100644
--- a/src/main/java/org/traccar/database/DataManager.java
+++ b/src/main/java/org/traccar/database/DataManager.java
@@ -41,6 +41,7 @@ import org.traccar.model.Group;
 import org.traccar.model.Maintenance;
 import org.traccar.model.ManagedUser;
 import org.traccar.model.Notification;
+import org.traccar.model.Order;
 import org.traccar.model.Permission;
 import org.traccar.model.Position;
 import org.traccar.model.Server;
@@ -332,6 +333,13 @@ public class DataManager {
                 .executeQuery(Position.class);
     }
 
+    public Position getPrecedingPosition(long deviceId, Date date) throws SQLException {
+        return QueryBuilder.create(dataSource, getQuery("database.selectPrecedingPosition"))
+                .setLong("deviceId", deviceId)
+                .setDate("time", date)
+                .executeQuerySingle(Position.class);
+    }
+
     public void updateLatestPosition(Position position) throws SQLException {
         QueryBuilder.create(dataSource, getQuery("database.updateLatestPosition"))
                 .setDate("now", new Date())
@@ -388,6 +396,8 @@ public class DataManager {
                 return Maintenance.class;
             case "notification":
                 return Notification.class;
+            case "order":
+                return Order.class;
             default:
                 throw new ClassNotFoundException();
         }
diff --git a/src/main/java/org/traccar/database/OrderManager.java b/src/main/java/org/traccar/database/OrderManager.java
new file mode 100644
index 000000000..c3253e52f
--- /dev/null
+++ b/src/main/java/org/traccar/database/OrderManager.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.database;
+
+import org.traccar.model.Order;
+
+public class OrderManager extends ExtendedObjectManager<Order> {
+
+    public OrderManager(DataManager dataManager) {
+        super(dataManager, Order.class);
+    }
+
+}
diff --git a/src/main/java/org/traccar/database/PermissionsManager.java b/src/main/java/org/traccar/database/PermissionsManager.java
index a27eac069..32464cf90 100644
--- a/src/main/java/org/traccar/database/PermissionsManager.java
+++ b/src/main/java/org/traccar/database/PermissionsManager.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,7 @@ import org.traccar.model.Group;
 import org.traccar.model.Maintenance;
 import org.traccar.model.ManagedUser;
 import org.traccar.model.Notification;
+import org.traccar.model.Order;
 import org.traccar.model.Permission;
 import org.traccar.model.Server;
 import org.traccar.model.User;
@@ -395,6 +396,8 @@ public class PermissionsManager {
             manager = Context.getMaintenancesManager();
         } else if (object.equals(Notification.class)) {
             manager = Context.getNotificationManager();
+        } else if (object.equals(Order.class)) {
+            manager = Context.getOrderManager();
         } else {
             throw new IllegalArgumentException("Unknown object type");
         }
@@ -454,6 +457,8 @@ public class PermissionsManager {
                 Context.getCommandsManager().refreshUserItems();
             } else if (permission.getPropertyClass().equals(Maintenance.class)) {
                 Context.getMaintenancesManager().refreshUserItems();
+            } else if (permission.getPropertyClass().equals(Order.class)) {
+                Context.getOrderManager().refreshUserItems();
             } else if (permission.getPropertyClass().equals(Notification.class)
                     && Context.getNotificationManager() != null) {
                 Context.getNotificationManager().refreshUserItems();
@@ -469,6 +474,8 @@ public class PermissionsManager {
                 Context.getCommandsManager().refreshExtendedPermissions();
             } else if (permission.getPropertyClass().equals(Maintenance.class)) {
                 Context.getMaintenancesManager().refreshExtendedPermissions();
+            } else if (permission.getPropertyClass().equals(Order.class)) {
+                Context.getOrderManager().refreshExtendedPermissions();
             } else if (permission.getPropertyClass().equals(Notification.class)
                     && Context.getNotificationManager() != null) {
                 Context.getNotificationManager().refreshExtendedPermissions();
diff --git a/src/main/java/org/traccar/geocoder/HereGeocoder.java b/src/main/java/org/traccar/geocoder/HereGeocoder.java
index aaf11d74d..40390e65b 100644
--- a/src/main/java/org/traccar/geocoder/HereGeocoder.java
+++ b/src/main/java/org/traccar/geocoder/HereGeocoder.java
@@ -53,8 +53,8 @@ public class HereGeocoder extends JsonGeocoder {
         if (result != null) {
             Address address = new Address();
 
-            if (json.containsKey("Label")) {
-                address.setFormattedAddress(json.getString("Label"));
+            if (result.containsKey("Label")) {
+                address.setFormattedAddress(result.getString("Label"));
             }
 
             if (result.containsKey("HouseNumber")) {
diff --git a/src/main/java/org/traccar/geocoder/JsonGeocoder.java b/src/main/java/org/traccar/geocoder/JsonGeocoder.java
index 3cd5b596e..f20aa79d6 100644
--- a/src/main/java/org/traccar/geocoder/JsonGeocoder.java
+++ b/src/main/java/org/traccar/geocoder/JsonGeocoder.java
@@ -97,7 +97,9 @@ public abstract class JsonGeocoder implements Geocoder {
             }
         }
 
-        Main.getInjector().getInstance(StatisticsManager.class).registerGeocoderRequest();
+        if (Main.getInjector() != null) {
+            Main.getInjector().getInstance(StatisticsManager.class).registerGeocoderRequest();
+        }
 
         Invocation.Builder request = Context.getClient().target(String.format(url, latitude, longitude)).request();
 
diff --git a/src/main/java/org/traccar/geocoder/MapTilerGeocoder.java b/src/main/java/org/traccar/geocoder/MapTilerGeocoder.java
new file mode 100644
index 000000000..6b688a6e8
--- /dev/null
+++ b/src/main/java/org/traccar/geocoder/MapTilerGeocoder.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.geocoder;
+
+import javax.json.JsonArray;
+import javax.json.JsonObject;
+
+public class MapTilerGeocoder extends JsonGeocoder {
+
+    public MapTilerGeocoder(String key, int cacheSize, AddressFormat addressFormat) {
+        super("https://api.maptiler.com/geocoding/%2$f,%1$f.json?key=" + key, cacheSize, addressFormat);
+    }
+
+    @Override
+    public Address parseAddress(JsonObject json) {
+        JsonArray features = json.getJsonArray("features");
+
+        if (!features.isEmpty()) {
+            Address address = new Address();
+
+            for (int i = 0; i < features.size(); i++) {
+                JsonObject feature = features.getJsonObject(i);
+                String type = feature.getJsonArray("place_type").getString(0);
+                String value = feature.getString("text");
+                switch (type) {
+                    case "street":
+                        address.setStreet(value);
+                        break;
+                    case "city":
+                        address.setSettlement(value);
+                        break;
+                    case "county":
+                        address.setDistrict(value);
+                        break;
+                    case "state":
+                        address.setState(value);
+                        break;
+                    case "country":
+                        address.setCountry(value);
+                        break;
+                    default:
+                        break;
+                }
+                if (address.getFormattedAddress() == null) {
+                    address.setFormattedAddress(feature.getString("place_name"));
+                }
+            }
+
+            return address;
+        }
+
+        return null;
+    }
+
+    @Override
+    protected String parseError(JsonObject json) {
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/geolocation/OpenCellIdGeolocationProvider.java b/src/main/java/org/traccar/geolocation/OpenCellIdGeolocationProvider.java
index cb3094e16..2535970d3 100644
--- a/src/main/java/org/traccar/geolocation/OpenCellIdGeolocationProvider.java
+++ b/src/main/java/org/traccar/geolocation/OpenCellIdGeolocationProvider.java
@@ -49,7 +49,15 @@ public class OpenCellIdGeolocationProvider implements GeolocationProvider {
                                 json.getJsonNumber("lat").doubleValue(),
                                 json.getJsonNumber("lon").doubleValue(), 0);
                     } else {
-                        callback.onFailure(new GeolocationException("Coordinates are missing"));
+                        if (json.containsKey("error")) {
+                            String errorMessage = json.getString("error");
+                            if (json.containsKey("code")) {
+                                errorMessage += " (" + json.getInt("code") + ")";
+                            }
+                            callback.onFailure(new GeolocationException(errorMessage));
+                        } else {
+                            callback.onFailure(new GeolocationException("Coordinates are missing"));
+                        }
                     }
                 }
 
diff --git a/src/main/java/org/traccar/geolocation/UniversalGeolocationProvider.java b/src/main/java/org/traccar/geolocation/UniversalGeolocationProvider.java
index f71620d8a..33cd84a47 100644
--- a/src/main/java/org/traccar/geolocation/UniversalGeolocationProvider.java
+++ b/src/main/java/org/traccar/geolocation/UniversalGeolocationProvider.java
@@ -25,7 +25,7 @@ import javax.ws.rs.client.InvocationCallback;
 
 public class UniversalGeolocationProvider implements GeolocationProvider {
 
-    private String url;
+    private final String url;
 
     public UniversalGeolocationProvider(String url, String key) {
         this.url = url + "?key=" + key;
diff --git a/src/main/java/org/traccar/handler/FilterHandler.java b/src/main/java/org/traccar/handler/FilterHandler.java
index 7cd9153c1..049512765 100644
--- a/src/main/java/org/traccar/handler/FilterHandler.java
+++ b/src/main/java/org/traccar/handler/FilterHandler.java
@@ -25,6 +25,9 @@ import org.traccar.config.Keys;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
+import java.sql.SQLException;
+import java.util.Date;
+
 @ChannelHandler.Sharable
 public class FilterHandler extends BaseDataHandler {
 
@@ -40,6 +43,7 @@ public class FilterHandler extends BaseDataHandler {
     private int filterDistance;
     private int filterMaxSpeed;
     private long filterMinPeriod;
+    private boolean filterRelative;
     private long skipLimit;
     private boolean skipAttributes;
 
@@ -54,14 +58,15 @@ public class FilterHandler extends BaseDataHandler {
         filterDistance = config.getInteger(Keys.FILTER_DISTANCE);
         filterMaxSpeed = config.getInteger(Keys.FILTER_MAX_SPEED);
         filterMinPeriod = config.getInteger(Keys.FILTER_MIN_PERIOD) * 1000;
+        filterRelative = config.getBoolean(Keys.FILTER_RELATIVE);
         skipLimit = config.getLong(Keys.FILTER_SKIP_LIMIT) * 1000;
         skipAttributes = config.getBoolean(Keys.FILTER_SKIP_ATTRIBUTES_ENABLE);
     }
 
     private boolean filterInvalid(Position position) {
         return filterInvalid && (!position.getValid()
-           || position.getLatitude() > 90 || position.getLongitude() > 180
-           || position.getLatitude() < -90 || position.getLongitude() < -180);
+                || position.getLatitude() > 90 || position.getLongitude() > 180
+                || position.getLatitude() < -90 || position.getLongitude() < -180);
     }
 
     private boolean filterZero(Position position) {
@@ -144,20 +149,13 @@ public class FilterHandler extends BaseDataHandler {
 
         StringBuilder filterType = new StringBuilder();
 
-        Position last = null;
-        if (Context.getIdentityManager() != null) {
-            last = Context.getIdentityManager().getLastPosition(position.getDeviceId());
-        }
-
+        // filter out invalid data
         if (filterInvalid(position)) {
             filterType.append("Invalid ");
         }
         if (filterZero(position)) {
             filterType.append("Zero ");
         }
-        if (filterDuplicate(position, last) && !skipLimit(position, last) && !skipAttributes(position)) {
-            filterType.append("Duplicate ");
-        }
         if (filterFuture(position)) {
             filterType.append("Future ");
         }
@@ -167,17 +165,37 @@ public class FilterHandler extends BaseDataHandler {
         if (filterApproximate(position)) {
             filterType.append("Approximate ");
         }
-        if (filterStatic(position) && !skipLimit(position, last) && !skipAttributes(position)) {
-            filterType.append("Static ");
-        }
-        if (filterDistance(position, last) && !skipLimit(position, last) && !skipAttributes(position)) {
-            filterType.append("Distance ");
-        }
-        if (filterMaxSpeed(position, last)) {
-            filterType.append("MaxSpeed ");
-        }
-        if (filterMinPeriod(position, last)) {
-            filterType.append("MinPeriod ");
+
+        // filter out excessive data
+        long deviceId = position.getDeviceId();
+        if (filterDuplicate || filterStatic || filterDistance > 0 || filterMaxSpeed > 0 || filterMinPeriod > 0) {
+            Position preceding = null;
+            if (filterRelative) {
+                try {
+                    Date newFixTime = position.getFixTime();
+                    preceding = Context.getDataManager().getPrecedingPosition(deviceId, newFixTime);
+                } catch (SQLException e) {
+                    LOGGER.warn("Error retrieving preceding position; fallbacking to last received position.", e);
+                    preceding = getLastReceivedPosition(deviceId);
+                }
+            } else {
+                preceding = getLastReceivedPosition(deviceId);
+            }
+            if (filterDuplicate(position, preceding)) {
+                filterType.append("Duplicate ");
+            }
+            if (filterStatic(position) && !skipLimit(position, preceding) && !skipAttributes(position)) {
+                filterType.append("Static ");
+            }
+            if (filterDistance(position, preceding) && !skipLimit(position, preceding) && !skipAttributes(position)) {
+                filterType.append("Distance ");
+            }
+            if (filterMaxSpeed(position, preceding)) {
+                filterType.append("MaxSpeed ");
+            }
+            if (filterMinPeriod(position, preceding)) {
+                filterType.append("MinPeriod ");
+            }
         }
 
         if (filterType.length() > 0) {
@@ -186,7 +204,7 @@ public class FilterHandler extends BaseDataHandler {
             message.append("Position filtered by ");
             message.append(filterType.toString());
             message.append("filters from device: ");
-            message.append(Context.getIdentityManager().getById(position.getDeviceId()).getUniqueId());
+            message.append(Context.getIdentityManager().getById(deviceId).getUniqueId());
 
             LOGGER.info(message.toString());
             return true;
@@ -195,6 +213,13 @@ public class FilterHandler extends BaseDataHandler {
         return false;
     }
 
+    private Position getLastReceivedPosition(long deviceId) {
+        if (Context.getIdentityManager() != null) {
+            return Context.getIdentityManager().getLastPosition(deviceId);
+        }
+        return null;
+    }
+
     @Override
     protected Position handlePosition(Position position) {
         if (filter(position)) {
diff --git a/src/main/java/org/traccar/handler/events/GeofenceEventHandler.java b/src/main/java/org/traccar/handler/events/GeofenceEventHandler.java
index f4807e56b..dae0c891f 100644
--- a/src/main/java/org/traccar/handler/events/GeofenceEventHandler.java
+++ b/src/main/java/org/traccar/handler/events/GeofenceEventHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@ import java.util.Map;
 
 import io.netty.channel.ChannelHandler;
 import org.traccar.database.CalendarManager;
+import org.traccar.database.ConnectionManager;
 import org.traccar.database.GeofenceManager;
 import org.traccar.database.IdentityManager;
 import org.traccar.model.Calendar;
@@ -35,12 +36,15 @@ public class GeofenceEventHandler extends BaseEventHandler {
     private final IdentityManager identityManager;
     private final GeofenceManager geofenceManager;
     private final CalendarManager calendarManager;
+    private final ConnectionManager connectionManager;
 
     public GeofenceEventHandler(
-            IdentityManager identityManager, GeofenceManager geofenceManager, CalendarManager calendarManager) {
+            IdentityManager identityManager, GeofenceManager geofenceManager, CalendarManager calendarManager,
+            ConnectionManager connectionManager) {
         this.identityManager = identityManager;
         this.geofenceManager = geofenceManager;
         this.calendarManager = calendarManager;
+        this.connectionManager = connectionManager;
     }
 
     @Override
@@ -63,6 +67,9 @@ public class GeofenceEventHandler extends BaseEventHandler {
         oldGeofences.removeAll(currentGeofences);
 
         device.setGeofenceIds(currentGeofences);
+        if (!oldGeofences.isEmpty() || !newGeofences.isEmpty()) {
+            connectionManager.updateDevice(device);
+        }
 
         Map<Event, Position> events = new HashMap<>();
         for (long geofenceId : oldGeofences) {
diff --git a/src/main/java/org/traccar/helper/BufferUtil.java b/src/main/java/org/traccar/helper/BufferUtil.java
index b086f0f9e..bbf12d738 100644
--- a/src/main/java/org/traccar/helper/BufferUtil.java
+++ b/src/main/java/org/traccar/helper/BufferUtil.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2018 - 2021 Anton Tananaev (anton@traccar.org)
  * Copyright 2018 Andrey Kunitsyn (andrey@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -28,19 +28,28 @@ public final class BufferUtil {
     }
 
     public static int indexOf(String needle, ByteBuf haystack) {
-        ByteBuf needleBuffer = Unpooled.wrappedBuffer(needle.getBytes(StandardCharsets.US_ASCII));
+        return indexOf(needle, haystack, haystack.readerIndex(), haystack.writerIndex());
+    }
+
+    public static int indexOf(String needle, ByteBuf haystack, int startIndex, int endIndex) {
+        ByteBuf wrappedNeedle = Unpooled.wrappedBuffer(needle.getBytes(StandardCharsets.US_ASCII));
         try {
-            return ByteBufUtil.indexOf(needleBuffer, haystack);
+            return indexOf(wrappedNeedle, haystack, startIndex, endIndex);
         } finally {
-            needleBuffer.release();
+            wrappedNeedle.release();
         }
     }
 
-    public static int indexOf(String needle, ByteBuf haystack, int startIndex, int endIndex) {
-        ByteBuf wrappedHaystack = Unpooled.wrappedBuffer(haystack);
-        wrappedHaystack.readerIndex(startIndex - haystack.readerIndex());
-        wrappedHaystack.writerIndex(endIndex - haystack.readerIndex());
-        int result = indexOf(needle, wrappedHaystack);
+    public static int indexOf(ByteBuf needle, ByteBuf haystack, int startIndex, int endIndex) {
+        ByteBuf wrappedHaystack;
+        if (startIndex == haystack.readerIndex() && endIndex == haystack.writerIndex()) {
+            wrappedHaystack = haystack;
+        } else {
+            wrappedHaystack = Unpooled.wrappedBuffer(haystack);
+            wrappedHaystack.readerIndex(startIndex - haystack.readerIndex());
+            wrappedHaystack.writerIndex(endIndex - haystack.readerIndex());
+        }
+        int result = ByteBufUtil.indexOf(needle, wrappedHaystack);
         return result < 0 ? result : haystack.readerIndex() + startIndex + result;
     }
 
diff --git a/src/main/java/org/traccar/model/Order.java b/src/main/java/org/traccar/model/Order.java
new file mode 100644
index 000000000..fe6d926b8
--- /dev/null
+++ b/src/main/java/org/traccar/model/Order.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.model;
+
+public class Order extends ExtendedModel {
+
+    private String uniqueId;
+
+    public String getUniqueId() {
+        return uniqueId;
+    }
+
+    public void setUniqueId(String uniqueId) {
+        this.uniqueId = uniqueId;
+    }
+
+    private String description;
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    private String fromAddress;
+
+    public String getFromAddress() {
+        return fromAddress;
+    }
+
+    public void setFromAddress(String fromAddress) {
+        this.fromAddress = fromAddress;
+    }
+
+    private String toAddress;
+
+    public String getToAddress() {
+        return toAddress;
+    }
+
+    public void setToAddress(String toAddress) {
+        this.toAddress = toAddress;
+    }
+
+}
diff --git a/src/main/java/org/traccar/model/Position.java b/src/main/java/org/traccar/model/Position.java
index 6f70c8e21..09d25e832 100644
--- a/src/main/java/org/traccar/model/Position.java
+++ b/src/main/java/org/traccar/model/Position.java
@@ -136,7 +136,6 @@ public class Position extends Message {
     public static final String ALARM_JAMMING = "jamming";
     public static final String ALARM_TEMPERATURE = "temperature";
     public static final String ALARM_PARKING = "parking";
-    public static final String ALARM_SHOCK = "shock";
     public static final String ALARM_BONNET = "bonnet";
     public static final String ALARM_FOOT_BRAKE = "footBrake";
     public static final String ALARM_FUEL_LEAK = "fuelLeak";
diff --git a/src/main/java/org/traccar/notification/NotificationFormatter.java b/src/main/java/org/traccar/notification/NotificationFormatter.java
index dabc75b8b..9a6723a71 100644
--- a/src/main/java/org/traccar/notification/NotificationFormatter.java
+++ b/src/main/java/org/traccar/notification/NotificationFormatter.java
@@ -58,14 +58,9 @@ public final class NotificationFormatter {
         return velocityContext;
     }
 
-    public static FullMessage formatFullMessage(long userId, Event event, Position position) {
+    public static NotificationMessage formatMessage(long userId, Event event, Position position, String templatePath) {
         VelocityContext velocityContext = prepareContext(userId, event, position);
-        return TextTemplateFormatter.formatFullMessage(velocityContext, event.getType());
-    }
-
-    public static String formatShortMessage(long userId, Event event, Position position) {
-        VelocityContext velocityContext = prepareContext(userId, event, position);
-        return TextTemplateFormatter.formatShortMessage(velocityContext, event.getType());
+        return TextTemplateFormatter.formatMessage(velocityContext, event.getType(), templatePath);
     }
 
 }
diff --git a/src/main/java/org/traccar/notification/FullMessage.java b/src/main/java/org/traccar/notification/NotificationMessage.java
index f66537c6e..0fb8d7654 100644
--- a/src/main/java/org/traccar/notification/FullMessage.java
+++ b/src/main/java/org/traccar/notification/NotificationMessage.java
@@ -16,12 +16,12 @@
  */
 package org.traccar.notification;
 
-public class FullMessage {
+public class NotificationMessage {
 
     private String subject;
     private String body;
 
-    public FullMessage(String subject, String body) {
+    public NotificationMessage(String subject, String body) {
         this.subject = subject;
         this.body = body;
     }
diff --git a/src/main/java/org/traccar/notification/TextTemplateFormatter.java b/src/main/java/org/traccar/notification/TextTemplateFormatter.java
index c7cac2d4d..b7058c824 100644
--- a/src/main/java/org/traccar/notification/TextTemplateFormatter.java
+++ b/src/main/java/org/traccar/notification/TextTemplateFormatter.java
@@ -71,21 +71,10 @@ public final class TextTemplateFormatter {
         return template;
     }
 
-    public static FullMessage formatFullMessage(VelocityContext velocityContext, String name) {
-        String formattedMessage = formatMessage(velocityContext, name, "full");
-        return new FullMessage((String) velocityContext.get("subject"), formattedMessage);
-    }
-
-    public static String formatShortMessage(VelocityContext velocityContext, String name) {
-        return formatMessage(velocityContext, name, "short");
-    }
-
-    private static String formatMessage(
-            VelocityContext velocityContext, String name, String templatePath) {
-
+    public static NotificationMessage formatMessage(VelocityContext velocityContext, String name, String templatePath) {
         StringWriter writer = new StringWriter();
         getTemplate(name, templatePath).merge(velocityContext, writer);
-        return writer.toString();
+        return new NotificationMessage((String) velocityContext.get("subject"), writer.toString());
     }
 
 }
diff --git a/src/main/java/org/traccar/notificators/NotificatorFirebase.java b/src/main/java/org/traccar/notificators/NotificatorFirebase.java
index 78d5da1e2..f91ec25a0 100644
--- a/src/main/java/org/traccar/notificators/NotificatorFirebase.java
+++ b/src/main/java/org/traccar/notificators/NotificatorFirebase.java
@@ -24,6 +24,7 @@ import org.traccar.config.Keys;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
 import org.traccar.model.User;
+import org.traccar.notification.NotificationMessage;
 import org.traccar.notification.NotificationFormatter;
 
 import javax.ws.rs.client.Entity;
@@ -37,6 +38,8 @@ public class NotificatorFirebase extends Notificator {
     private final String key;
 
     public static class Notification {
+        @JsonProperty("title")
+        private String title;
         @JsonProperty("body")
         private String body;
         @JsonProperty("sound")
@@ -66,8 +69,11 @@ public class NotificatorFirebase extends Notificator {
         final User user = Context.getPermissionsManager().getUser(userId);
         if (user.getAttributes().containsKey("notificationTokens")) {
 
+            NotificationMessage shortMessage = NotificationFormatter.formatMessage(userId, event, position, "short");
+
             Notification notification = new Notification();
-            notification.body = NotificationFormatter.formatShortMessage(userId, event, position).trim();
+            notification.title = shortMessage.getSubject();
+            notification.body = shortMessage.getBody();
             notification.sound = "default";
 
             Message message = new Message();
diff --git a/src/main/java/org/traccar/notificators/NotificatorMail.java b/src/main/java/org/traccar/notificators/NotificatorMail.java
index 6b9774c58..9b5637ed8 100644
--- a/src/main/java/org/traccar/notificators/NotificatorMail.java
+++ b/src/main/java/org/traccar/notificators/NotificatorMail.java
@@ -19,7 +19,7 @@ package org.traccar.notificators;
 import org.traccar.Context;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
-import org.traccar.notification.FullMessage;
+import org.traccar.notification.NotificationMessage;
 import org.traccar.notification.MessageException;
 import org.traccar.notification.NotificationFormatter;
 
@@ -30,8 +30,8 @@ public final class NotificatorMail extends Notificator {
     @Override
     public void sendSync(long userId, Event event, Position position) throws MessageException {
         try {
-            FullMessage message = NotificationFormatter.formatFullMessage(userId, event, position);
-            Context.getMailManager().sendMessage(userId, message.getSubject(), message.getBody());
+            NotificationMessage fullMessage = NotificationFormatter.formatMessage(userId, event, position, "full");
+            Context.getMailManager().sendMessage(userId, fullMessage.getSubject(), fullMessage.getBody());
         } catch (MessagingException e) {
             throw new MessageException(e);
         }
diff --git a/src/main/java/org/traccar/notificators/NotificatorPushover.java b/src/main/java/org/traccar/notificators/NotificatorPushover.java
index 189af7834..456c2fe4f 100644
--- a/src/main/java/org/traccar/notificators/NotificatorPushover.java
+++ b/src/main/java/org/traccar/notificators/NotificatorPushover.java
@@ -24,6 +24,7 @@ import org.traccar.model.Event;
 import org.traccar.model.Position;
 import org.traccar.model.User;
 import org.traccar.notification.NotificationFormatter;
+import org.traccar.notification.NotificationMessage;
 
 import javax.ws.rs.client.Entity;
 import javax.ws.rs.client.InvocationCallback;
@@ -43,6 +44,8 @@ public class NotificatorPushover extends Notificator {
         private String user;
         @JsonProperty("device")
         private String device;
+        @JsonProperty("title")
+        private String title;
         @JsonProperty("message")
         private String message;
     }
@@ -74,11 +77,14 @@ public class NotificatorPushover extends Notificator {
             return;
         }
 
+        NotificationMessage shortMessage = NotificationFormatter.formatMessage(userId, event, position, "short");
+
         Message message = new Message();
         message.token = token;
         message.user = this.user;
         message.device = device;
-        message.message = NotificationFormatter.formatShortMessage(userId, event, position);
+        message.title = shortMessage.getSubject();
+        message.message = shortMessage.getBody();
 
         Context.getClient().target(url).request()
                 .async().post(Entity.json(message), new InvocationCallback<Object>() {
diff --git a/src/main/java/org/traccar/notificators/NotificatorSms.java b/src/main/java/org/traccar/notificators/NotificatorSms.java
index 8124e40b1..fb817b112 100644
--- a/src/main/java/org/traccar/notificators/NotificatorSms.java
+++ b/src/main/java/org/traccar/notificators/NotificatorSms.java
@@ -24,6 +24,7 @@ import org.traccar.model.Position;
 import org.traccar.model.User;
 import org.traccar.notification.MessageException;
 import org.traccar.notification.NotificationFormatter;
+import org.traccar.notification.NotificationMessage;
 
 public final class NotificatorSms extends Notificator {
 
@@ -31,9 +32,10 @@ public final class NotificatorSms extends Notificator {
     public void sendAsync(long userId, Event event, Position position) {
         final User user = Context.getPermissionsManager().getUser(userId);
         if (user.getPhone() != null) {
+            NotificationMessage shortMessage = NotificationFormatter.formatMessage(userId, event, position, "short");
             Main.getInjector().getInstance(StatisticsManager.class).registerSms();
             Context.getSmsManager().sendMessageAsync(user.getPhone(),
-                    NotificationFormatter.formatShortMessage(userId, event, position), false);
+                    shortMessage.getBody(), false);
         }
     }
 
@@ -41,9 +43,10 @@ public final class NotificatorSms extends Notificator {
     public void sendSync(long userId, Event event, Position position) throws MessageException, InterruptedException {
         final User user = Context.getPermissionsManager().getUser(userId);
         if (user.getPhone() != null) {
+            NotificationMessage shortMessage = NotificationFormatter.formatMessage(userId, event, position, "short");
             Main.getInjector().getInstance(StatisticsManager.class).registerSms();
             Context.getSmsManager().sendMessageSync(user.getPhone(),
-                    NotificationFormatter.formatShortMessage(userId, event, position), false);
+                    shortMessage.getBody(), false);
         }
     }
 
diff --git a/src/main/java/org/traccar/notificators/NotificatorTelegram.java b/src/main/java/org/traccar/notificators/NotificatorTelegram.java
index dbba0d31d..70148110c 100644
--- a/src/main/java/org/traccar/notificators/NotificatorTelegram.java
+++ b/src/main/java/org/traccar/notificators/NotificatorTelegram.java
@@ -25,6 +25,7 @@ import org.traccar.config.Keys;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
 import org.traccar.notification.NotificationFormatter;
+import org.traccar.notification.NotificationMessage;
 
 import javax.ws.rs.client.Entity;
 import javax.ws.rs.client.InvocationCallback;
@@ -98,12 +99,14 @@ public class NotificatorTelegram extends Notificator {
     @Override
     public void sendSync(long userId, Event event, Position position) {
         User user = Context.getPermissionsManager().getUser(userId);
+        NotificationMessage shortMessage = NotificationFormatter.formatMessage(userId, event, position, "short");
+
         TextMessage message = new TextMessage();
         message.chatId = user.getString("telegramChatId");
         if (message.chatId == null) {
             message.chatId = chatId;
         }
-        message.text = NotificationFormatter.formatShortMessage(userId, event, position);
+        message.text = shortMessage.getBody();
         executeRequest(urlSendText, message);
         if (sendLocation && position != null) {
             executeRequest(urlSendLocation, createLocationMessage(message.chatId, position));
diff --git a/src/main/java/org/traccar/protocol/B2316Protocol.java b/src/main/java/org/traccar/protocol/B2316Protocol.java
new file mode 100644
index 000000000..7f08870ce
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/B2316Protocol.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class B2316Protocol extends BaseProtocol {
+
+    public B2316Protocol() {
+        addServer(new TrackerServer(true, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new StringEncoder());
+                pipeline.addLast(new StringDecoder());
+                pipeline.addLast(new B2316ProtocolDecoder(B2316Protocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/B2316ProtocolDecoder.java b/src/main/java/org/traccar/protocol/B2316ProtocolDecoder.java
new file mode 100644
index 000000000..854107a20
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/B2316ProtocolDecoder.java
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+import org.traccar.model.WifiAccessPoint;
+
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonObject;
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class B2316ProtocolDecoder extends BaseProtocolDecoder {
+
+    public B2316ProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private String decodeAlarm(int value) {
+        switch (value) {
+            case 1:
+                return Position.ALARM_LOW_BATTERY;
+            case 2:
+                return Position.ALARM_SOS;
+            case 3:
+                return Position.ALARM_POWER_OFF;
+            case 4:
+                return Position.ALARM_REMOVING;
+            default:
+                return null;
+        }
+    }
+
+    private Integer decodeBattery(int value) {
+        switch (value) {
+            case 0:
+                return 10;
+            case 1:
+                return 30;
+            case 2:
+                return 60;
+            case 3:
+                return 80;
+            case 4:
+                return 100;
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        JsonObject root = Json.createReader(new StringReader((String) msg)).readObject();
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, root.getString("imei"));
+        if (deviceSession == null) {
+            return null;
+        }
+
+        List<Position> positions = new LinkedList<>();
+        JsonArray data = root.getJsonArray("data");
+        for (int i = 0; i < data.size(); i++) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            Network network = new Network();
+
+            JsonObject item = data.getJsonObject(i);
+            Date time = new Date(item.getJsonNumber("tm").longValue() * 1000);
+
+            if (item.containsKey("gp")) {
+                String[] coordinates = item.getString("gp").split(",");
+                position.setLongitude(Double.parseDouble(coordinates[0]));
+                position.setLatitude(Double.parseDouble(coordinates[1]));
+                position.setValid(true);
+                position.setTime(time);
+            } else {
+                getLastLocation(position, time);
+            }
+
+            if (item.containsKey("ci")) {
+                String[] cell = item.getString("ci").split(",");
+                network.addCellTower(CellTower.from(
+                        Integer.parseInt(cell[0]), Integer.parseInt(cell[1]),
+                        Integer.parseInt(cell[2]), Integer.parseInt(cell[3]),
+                        Integer.parseInt(cell[4])));
+            }
+
+            if (item.containsKey("wi")) {
+                String[] points = item.getString("wi").split(";");
+                for (String point : points) {
+                    String[] values = point.split(",");
+                    network.addWifiAccessPoint(WifiAccessPoint.from(
+                            values[0].replaceAll("(..)", "$1:"), Integer.parseInt(values[1])));
+                }
+            }
+
+            if (item.containsKey("wn")) {
+                position.set(Position.KEY_ALARM, decodeAlarm(item.getInt("wn")));
+            }
+            if (item.containsKey("ic")) {
+                position.set(Position.KEY_ICCID, item.getString("ic"));
+            }
+            if (item.containsKey("ve")) {
+                position.set(Position.KEY_VERSION_FW, item.getString("ve"));
+            }
+            if (item.containsKey("te")) {
+                String[] temperatures = item.getString("te").split(",");
+                for (int j = 0; j < temperatures.length; j++) {
+                    position.set(Position.PREFIX_TEMP + (j + 1), Integer.parseInt(temperatures[j]) * 0.1);
+                }
+            }
+            if (item.containsKey("st")) {
+                position.set(Position.KEY_STEPS, item.getInt("st"));
+            }
+            if (item.containsKey("ba")) {
+                position.set(Position.KEY_BATTERY_LEVEL, decodeBattery(item.getInt("ba")));
+            }
+            if (item.containsKey("sn")) {
+                position.set(Position.KEY_RSSI, item.getInt("sn"));
+            }
+            if (item.containsKey("hr")) {
+                position.set(Position.KEY_HEART_RATE, item.getInt("hr"));
+            }
+
+            if (network.getCellTowers() != null || network.getWifiAccessPoints() != null) {
+                position.setNetwork(network);
+            }
+
+            positions.add(position);
+        }
+
+        return positions.isEmpty() ? null : positions;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/BceProtocolDecoder.java b/src/main/java/org/traccar/protocol/BceProtocolDecoder.java
index a26b8e8e6..535827f3c 100644
--- a/src/main/java/org/traccar/protocol/BceProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/BceProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -90,11 +90,13 @@ public class BceProtocolDecoder extends BaseProtocolDecoder {
         }
 
         if (BitUtil.check(mask, 14)) {
-            position.setNetwork(new Network(CellTower.from(
-                    buf.readUnsignedShortLE(), buf.readUnsignedByte(),
-                    buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
-                    buf.readUnsignedByte())));
-            buf.readUnsignedByte();
+            int mcc = buf.readUnsignedShortLE();
+            int mnc = buf.readUnsignedByte();
+            int lac = buf.readUnsignedShortLE();
+            int cid = buf.readUnsignedShortLE();
+            buf.readUnsignedByte(); // time advance
+            int rssi = -buf.readUnsignedByte();
+            position.setNetwork(new Network(CellTower.from(mcc, mnc, lac, cid, rssi)));
         }
     }
 
@@ -177,10 +179,16 @@ public class BceProtocolDecoder extends BaseProtocolDecoder {
             buf.readUnsignedShortLE(); // dallas humidity
         }
         if (BitUtil.check(mask, 9)) {
-            buf.skipBytes(6); // lls group 1
+            position.set("fuel1", buf.readUnsignedShortLE());
+            position.set("fuelTemp1", (int) buf.readByte());
+            position.set("fuel2", buf.readUnsignedShortLE());
+            position.set("fuelTemp2", (int) buf.readByte());
         }
         if (BitUtil.check(mask, 10)) {
-            buf.skipBytes(6); // lls group 2
+            position.set("fuel3", buf.readUnsignedShortLE());
+            position.set("fuelTemp3", (int) buf.readByte());
+            position.set("fuel4", buf.readUnsignedShortLE());
+            position.set("fuelTemp4", (int) buf.readByte());
         }
         if (BitUtil.check(mask, 11)) {
             buf.skipBytes(21); // j1979 group 1
diff --git a/src/main/java/org/traccar/protocol/C2stekProtocolDecoder.java b/src/main/java/org/traccar/protocol/C2stekProtocolDecoder.java
index 6a31cb2f4..83e62ff86 100644
--- a/src/main/java/org/traccar/protocol/C2stekProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/C2stekProtocolDecoder.java
@@ -60,7 +60,7 @@ public class C2stekProtocolDecoder extends BaseProtocolDecoder {
     private String decodeAlarm(int alarm) {
         switch (alarm) {
             case 0x2:
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case 0x3:
                 return Position.ALARM_POWER_CUT;
             case 0x4:
diff --git a/src/main/java/org/traccar/protocol/DmtHttpProtocolDecoder.java b/src/main/java/org/traccar/protocol/DmtHttpProtocolDecoder.java
index 987361baf..815cce987 100644
--- a/src/main/java/org/traccar/protocol/DmtHttpProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/DmtHttpProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,7 +32,11 @@ import java.io.StringReader;
 import java.net.SocketAddress;
 import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
+import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.time.OffsetDateTime;
+import java.util.Collection;
+import java.util.Date;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.TimeZone;
@@ -51,12 +55,25 @@ public class DmtHttpProtocolDecoder extends BaseHttpProtocolDecoder {
         JsonObject root = Json.createReader(
                 new StringReader(request.content().toString(StandardCharsets.US_ASCII))).readObject();
 
+        Object result;
+        if (root.containsKey("device")) {
+            result = decodeEdge(channel, remoteAddress, root);
+        } else {
+            result = decodeTraditional(channel, remoteAddress, root);
+        }
+
+        sendResponse(channel, result != null ? HttpResponseStatus.OK : HttpResponseStatus.BAD_REQUEST);
+        return result;
+    }
+
+    private Collection<Position> decodeTraditional(
+            Channel channel, SocketAddress remoteAddress, JsonObject root) throws ParseException {
+
         DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
 
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, root.getString("IMEI"));
         if (deviceSession == null) {
-            sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
             return null;
         }
 
@@ -126,8 +143,77 @@ public class DmtHttpProtocolDecoder extends BaseHttpProtocolDecoder {
             positions.add(position);
         }
 
-        sendResponse(channel, HttpResponseStatus.OK);
         return positions;
     }
 
+    private Position decodeEdge(
+            Channel channel, SocketAddress remoteAddress, JsonObject root) {
+
+        JsonObject device = root.getJsonObject("device");
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, device.getString("imei"));
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        Date time = new Date(OffsetDateTime.parse(root.getString("date")).toInstant().toEpochMilli());
+
+        if (root.containsKey("lat") && root.containsKey("lng")) {
+            position.setValid(true);
+            position.setTime(time);
+            position.setLatitude(root.getJsonNumber("lat").doubleValue());
+            position.setLongitude(root.getJsonNumber("lng").doubleValue());
+            position.setAccuracy(root.getJsonNumber("posAcc").doubleValue());
+        } else {
+            getLastLocation(position, time);
+        }
+
+        position.set(Position.KEY_INDEX, root.getInt("sqn"));
+        position.set(Position.KEY_EVENT, root.getInt("reason"));
+
+        if (root.containsKey("analogues")) {
+            JsonArray analogues = root.getJsonArray("analogues");
+            for (int i = 0; i < analogues.size(); i++) {
+                JsonObject adc = analogues.getJsonObject(i);
+                position.set(Position.PREFIX_ADC + adc.getInt("id"), adc.getInt("val"));
+            }
+        }
+
+        if (root.containsKey("inputs")) {
+            int input = root.getInt("inputs");
+            position.set(Position.KEY_IGNITION, BitUtil.check(input, 0));
+            position.set(Position.KEY_INPUT, input);
+        }
+        if (root.containsKey("outputs")) {
+            position.set(Position.KEY_OUTPUT, root.getInt("outputs"));
+        }
+        if (root.containsKey("status")) {
+            position.set(Position.KEY_STATUS, root.getInt("status"));
+        }
+
+        if (root.containsKey("counters")) {
+            JsonArray counters = root.getJsonArray("counters");
+            for (int i = 0; i < counters.size(); i++) {
+                JsonObject counter = counters.getJsonObject(i);
+                switch (counter.getInt("id")) {
+                    case 0:
+                        position.set(Position.KEY_BATTERY, counter.getInt("val") * 0.001);
+                        break;
+                    case 1:
+                        position.set(Position.KEY_BATTERY_LEVEL, counter.getInt("val") * 0.01);
+                        break;
+                    default:
+                        position.set("counter" + counter.getInt("id"), counter.getInt("val"));
+                        break;
+                }
+
+            }
+        }
+
+        return position;
+    }
+
 }
diff --git a/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java b/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java
index e882c2378..d509b3ec0 100644
--- a/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java
@@ -101,6 +101,10 @@ public class DolphinProtocolDecoder extends BaseProtocolDecoder {
                 position.set(Position.KEY_SATELLITES, point.getSatellites());
                 position.set(Position.KEY_HDOP, point.getHDOP());
 
+                for (int j = 0; j < point.getIOListIDCount(); j++) {
+                    position.set(Position.PREFIX_IO + point.getIOListIDValue(j), point.getIOListValue(j));
+                }
+
                 positions.add(position);
 
             }
diff --git a/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java b/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java
new file mode 100644
index 000000000..388c97f85
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+
+public class Dsf22FrameDecoder extends BaseFrameDecoder {
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        if (buf.readableBytes() < 21) {
+            return null;
+        }
+
+        int count = buf.getUnsignedByte(buf.readerIndex() + 4);
+
+        int length = 2 + 2 + 1 + count * (4 + 4 + 4 + 1 + 2 + 1);
+
+        if (buf.readableBytes() >= length) {
+            return buf.readRetainedSlice(length);
+        } else {
+            return null;
+        }
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/Dsf22Protocol.java b/src/main/java/org/traccar/protocol/Dsf22Protocol.java
new file mode 100644
index 000000000..bffc3e419
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Dsf22Protocol.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class Dsf22Protocol extends BaseProtocol {
+
+    public Dsf22Protocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new Dsf22FrameDecoder());
+                pipeline.addLast(new Dsf22ProtocolDecoder(Dsf22Protocol.this));
+            }
+        });
+        addServer(new TrackerServer(true, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new Dsf22ProtocolDecoder(Dsf22Protocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java
new file mode 100644
index 000000000..d5a9df7bc
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class Dsf22ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Dsf22ProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.skipBytes(2); // header
+
+        String id = ByteBufUtil.hexDump(buf.readSlice(2));
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        List<Position> positions = new LinkedList<>();
+        int count = buf.readUnsignedByte();
+
+        for (int i = 0; i < count; i++) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            position.setValid(true);
+            position.setLatitude(buf.readInt());
+            position.setLongitude(buf.readInt());
+            position.setTime(new Date(946684800000L + buf.readUnsignedInt()));
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+
+            position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.001);
+
+            int status = buf.readUnsignedByte();
+            position.set(Position.KEY_IGNITION, BitUtil.check(status, 0));
+            position.set(Position.PREFIX_IN + 1, BitUtil.check(status, 1));
+            position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 4));
+            position.set(Position.KEY_ALARM, BitUtil.check(status, 6) ? Position.ALARM_JAMMING : null);
+            position.set(Position.KEY_STATUS, status);
+
+            positions.add(position);
+
+        }
+
+        if (channel != null) {
+            byte[] response = {0x01};
+            channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress));
+        }
+
+        return positions;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java b/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java
new file mode 100644
index 000000000..312d43f19
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+
+public class DualcamFrameDecoder extends BaseFrameDecoder {
+
+    private static final int MESSAGE_MINIMUM_LENGTH = 4;
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        if (buf.readableBytes() < MESSAGE_MINIMUM_LENGTH) {
+            return null;
+        }
+
+        int length;
+        if (buf.getUnsignedShort(buf.readerIndex()) == 0) {
+            length = 16;
+        } else {
+            length = 4 + buf.getUnsignedShort(buf.readerIndex() + 2);
+        }
+
+        if (buf.readableBytes() >= length) {
+            return buf.readRetainedSlice(length);
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/DualcamProtocol.java b/src/main/java/org/traccar/protocol/DualcamProtocol.java
new file mode 100644
index 000000000..04c4f2bd1
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamProtocol.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class DualcamProtocol extends BaseProtocol {
+
+    public DualcamProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new DualcamFrameDecoder());
+                pipeline.addLast(new DualcamProtocolDecoder(DualcamProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java b/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java
new file mode 100644
index 000000000..c64b8171f
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.Context;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+
+public class DualcamProtocolDecoder extends BaseProtocolDecoder {
+
+    public DualcamProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_INIT = 0;
+    public static final int MSG_START = 1;
+    public static final int MSG_RESUME = 2;
+    public static final int MSG_SYNC = 3;
+    public static final int MSG_DATA = 4;
+    public static final int MSG_COMPLETE = 5;
+    public static final int MSG_FILE_REQUEST = 8;
+    public static final int MSG_INIT_REQUEST = 9;
+
+    private String uniqueId;
+    private int packetCount;
+    private int currentPacket;
+    private ByteBuf photo;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        int type = buf.readUnsignedShort();
+
+        switch (type) {
+            case MSG_INIT:
+                buf.readUnsignedShort(); // protocol id
+                uniqueId = String.valueOf(buf.readLong());
+                DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, uniqueId);
+                long settings = buf.readUnsignedInt();
+                if (channel != null && deviceSession != null) {
+                    ByteBuf response = Unpooled.buffer();
+                    if (BitUtil.between(settings, 26, 28) > 0) {
+                        response.writeShort(MSG_FILE_REQUEST);
+                        String file = BitUtil.check(settings, 26) ? "%photof" : "%photor";
+                        response.writeShort(file.length());
+                        response.writeCharSequence(file, StandardCharsets.US_ASCII);
+                    } else {
+                        response.writeShort(MSG_COMPLETE);
+                    }
+                    channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                }
+                break;
+            case MSG_START:
+                buf.readUnsignedShort(); // length
+                packetCount = buf.readInt();
+                currentPacket = 1;
+                photo = Unpooled.buffer();
+                if (channel != null) {
+                    ByteBuf response = Unpooled.buffer();
+                    response.writeShort(MSG_RESUME);
+                    response.writeShort(4);
+                    response.writeInt(currentPacket);
+                    channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                }
+                break;
+            case MSG_DATA:
+                buf.readUnsignedShort(); // length
+                photo.writeBytes(buf, buf.readableBytes() - 2);
+                if (currentPacket == packetCount) {
+                    deviceSession = getDeviceSession(channel, remoteAddress);
+                    Position position = new Position(getProtocolName());
+                    position.setDeviceId(deviceSession.getDeviceId());
+                    getLastLocation(position, null);
+                    try {
+                        position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(uniqueId, photo, "jpg"));
+                    } finally {
+                        photo.release();
+                        photo = null;
+                    }
+                    if (channel != null) {
+                        ByteBuf response = Unpooled.buffer();
+                        response.writeShort(MSG_INIT_REQUEST);
+                        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                    }
+                    return position;
+                } else {
+                    currentPacket += 1;
+                }
+                break;
+            default:
+                break;
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/EelinkProtocolDecoder.java b/src/main/java/org/traccar/protocol/EelinkProtocolDecoder.java
index 613710587..8fe12fe69 100644
--- a/src/main/java/org/traccar/protocol/EelinkProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/EelinkProtocolDecoder.java
@@ -421,7 +421,7 @@ public class EelinkProtocolDecoder extends BaseProtocolDecoder {
             ByteBuf content = Unpooled.buffer();
             if (type == MSG_LOGIN) {
                 content.writeInt((int) (System.currentTimeMillis() / 1000));
-                content.writeByte(1); // protocol version
+                content.writeShort(1); // protocol version
                 content.writeByte(0); // action mask
             }
             ByteBuf response = EelinkProtocolEncoder.encodeContent(
diff --git a/src/main/java/org/traccar/protocol/EsealProtocolDecoder.java b/src/main/java/org/traccar/protocol/EsealProtocolDecoder.java
index cc7f6e935..0a12f781d 100644
--- a/src/main/java/org/traccar/protocol/EsealProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/EsealProtocolDecoder.java
@@ -75,7 +75,7 @@ public class EsealProtocolDecoder extends BaseProtocolDecoder {
             case "Event-Door":
                 return Position.ALARM_DOOR;
             case "Event-Shock":
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case "Event-Drop":
                 return Position.ALARM_FALL_DOWN;
             case "Event-Lock":
diff --git a/src/main/java/org/traccar/protocol/FifotrackProtocolDecoder.java b/src/main/java/org/traccar/protocol/FifotrackProtocolDecoder.java
index 70972f847..5f9326a61 100644
--- a/src/main/java/org/traccar/protocol/FifotrackProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/FifotrackProtocolDecoder.java
@@ -31,6 +31,7 @@ import org.traccar.helper.UnitsConverter;
 import org.traccar.model.CellTower;
 import org.traccar.model.Network;
 import org.traccar.model.Position;
+import org.traccar.model.WifiAccessPoint;
 
 import java.net.SocketAddress;
 import java.nio.charset.StandardCharsets;
@@ -74,6 +75,37 @@ public class FifotrackProtocolDecoder extends BaseProtocolDecoder {
             .any()
             .compile();
 
+    private static final Pattern PATTERN_NEW = new PatternBuilder()
+            .text("$$")
+            .number("d+,")                       // length
+            .number("(d+),")                     // imei
+            .number("x+,")                       // index
+            .text("A03,")                        // type
+            .number("(d+)?,")                    // alarm
+            .number("(dd)(dd)(dd)")              // date (yymmdd)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .number("(d+)|")                     // mcc
+            .number("(d+)|")                     // mnc
+            .number("(x+)|")                     // lac
+            .number("(x+),")                     // cid
+            .number("(d+.d+),")                  // battery
+            .number("(d+),")                     // battery level
+            .number("(x+),")                     // status
+            .groupBegin()
+            .text("0,")                          // gps location
+            .number("([AV]),")                   // validity
+            .number("(d+),")                     // speed
+            .number("(d+),")                     // satellites
+            .number("(-?d+.d+),")                // latitude
+            .number("(-?d+.d+)")                 // longitude
+            .or()
+            .text("1,")                          // wifi location
+            .expression("([^*]+)")               // wifi
+            .groupEnd()
+            .text("*")
+            .number("xx")                        // checksum
+            .compile();
+
     private static final Pattern PATTERN_PHOTO = new PatternBuilder()
             .text("$$")
             .number("d+,")                       // length
@@ -160,6 +192,61 @@ public class FifotrackProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
+
+    private Object decodeLocationNew(
+            Channel channel, SocketAddress remoteAddress, String sentence) {
+
+        Parser parser = new Parser(PATTERN_NEW, sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.set(Position.KEY_ALARM, decodeAlarm(parser.nextInt()));
+
+        position.setDeviceTime(parser.nextDateTime());
+
+        Network network = new Network();
+        network.addCellTower(CellTower.from(
+                parser.nextInt(), parser.nextInt(), parser.nextHexInt(), parser.nextHexInt()));
+
+        position.set(Position.KEY_BATTERY, parser.nextDouble());
+        position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt());
+        position.set(Position.KEY_STATUS, parser.nextHexInt());
+
+        if (parser.hasNext(5)) {
+
+            position.setValid(parser.next().equals("A"));
+            position.setFixTime(position.getDeviceTime());
+            position.set(Position.KEY_SATELLITES, parser.nextInt());
+            position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt()));
+            position.setLatitude(parser.nextDouble());
+            position.setLongitude(parser.nextDouble());
+
+        } else {
+
+            String[] points = parser.next().split("\\|");
+            for (String point : points) {
+                String[] wifi = point.split(":");
+                String mac = wifi[0].replaceAll("(..)", "$1:");
+                network.addWifiAccessPoint(WifiAccessPoint.from(
+                        mac.substring(0, mac.length() - 1), Integer.parseInt(wifi[1])));
+            }
+
+        }
+
+        position.setNetwork(network);
+
+        return position;
+    }
+
     private Object decodeLocation(
             Channel channel, SocketAddress remoteAddress, String sentence) {
 
@@ -206,7 +293,12 @@ public class FifotrackProtocolDecoder extends BaseProtocolDecoder {
         }
 
         if (parser.hasNext()) {
-            position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(parser.nextHexInt()));
+            String rfid = parser.next();
+            if (rfid.matches("\\p{XDigit}+")) {
+                position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(Integer.parseInt(rfid, 16)));
+            } else {
+                position.set("driverLicense", rfid);
+            }
         }
 
         if (parser.hasNext()) {
@@ -296,6 +388,10 @@ public class FifotrackProtocolDecoder extends BaseProtocolDecoder {
                 }
             }
 
+        } else if (type.equals("A03")) {
+
+            return decodeLocationNew(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII));
+
         } else {
 
             return decodeLocation(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII));
diff --git a/src/main/java/org/traccar/protocol/FlespiProtocolDecoder.java b/src/main/java/org/traccar/protocol/FlespiProtocolDecoder.java
index 0a0d04db0..83ca74ce5 100644
--- a/src/main/java/org/traccar/protocol/FlespiProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/FlespiProtocolDecoder.java
@@ -190,7 +190,7 @@ public class FlespiProtocolDecoder extends BaseHttpProtocolDecoder {
                 return true;
             case "shock.event.trigger":
                 if (value == JsonValue.TRUE) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_SHOCK);
+                    position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION);
                 }
                 return true;
             case "overspeeding.event.trigger":
diff --git a/src/main/java/org/traccar/protocol/FlexApiProtocol.java b/src/main/java/org/traccar/protocol/FlexApiProtocol.java
new file mode 100644
index 000000000..bc6a49907
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/FlexApiProtocol.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.handler.codec.LineBasedFrameDecoder;
+import io.netty.handler.codec.string.StringDecoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class FlexApiProtocol extends BaseProtocol {
+
+    public FlexApiProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new LineBasedFrameDecoder(5120));
+                pipeline.addLast(new StringDecoder());
+                pipeline.addLast(new FlexApiProtocolDecoder(FlexApiProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/FlexApiProtocolDecoder.java b/src/main/java/org/traccar/protocol/FlexApiProtocolDecoder.java
new file mode 100644
index 000000000..d4d539a9e
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/FlexApiProtocolDecoder.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.model.Position;
+
+import javax.json.Json;
+import javax.json.JsonObject;
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.util.Date;
+
+public class FlexApiProtocolDecoder extends BaseProtocolDecoder {
+
+    public FlexApiProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        String message = (String) msg;
+        JsonObject root = Json.createReader(new StringReader(message.substring(1, message.length() - 2))).readObject();
+
+        String topic = root.getString("topic");
+        String clientId = topic.substring(3, topic.indexOf('/', 3));
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, clientId);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        JsonObject payload = root.getJsonObject("payload");
+
+        if (topic.contains("gnss")) {
+
+            position.setValid(true);
+
+            if (payload.containsKey("time")) {
+                position.setTime(new Date(payload.getInt("time") * 1000L));
+                position.setLatitude(payload.getJsonNumber("lat").doubleValue());
+                position.setLongitude(payload.getJsonNumber("log").doubleValue());
+            } else {
+                position.setTime(new Date(payload.getInt("gnss.ts") * 1000L));
+                position.setLatitude(payload.getJsonNumber("gnss.latitude").doubleValue());
+                position.setLongitude(payload.getJsonNumber("gnss.longitude").doubleValue());
+            }
+
+            position.setAltitude(payload.getJsonNumber("gnss.altitude").doubleValue());
+            position.setSpeed(payload.getJsonNumber("gnss.speed").doubleValue());
+            position.setCourse(payload.getJsonNumber("gnss.heading").doubleValue());
+
+            position.set(Position.KEY_SATELLITES, payload.getInt("gnss.num_sv"));
+
+        } else if (topic.contains("obd")) {
+
+            getLastLocation(position, new Date(payload.getInt("obd.ts") * 1000L));
+
+            if (payload.containsKey("obd.speed")) {
+                position.set(Position.KEY_OBD_SPEED, payload.getJsonNumber("obd.speed").doubleValue());
+            }
+            if (payload.containsKey("obd.odo")) {
+                position.set(Position.KEY_OBD_ODOMETER, payload.getInt("obd.odo"));
+            }
+            if (payload.containsKey("obd.rpm")) {
+                position.set(Position.KEY_RPM, payload.getInt("obd.rpm"));
+            }
+            if (payload.containsKey("obd.vin")) {
+                position.set(Position.KEY_VIN, payload.getString("obd.vin"));
+            }
+
+        } else {
+
+            return null;
+
+        }
+
+        return position;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
index dc558147a..f29fb9850 100644
--- a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
@@ -309,18 +309,17 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
 
         Position position = null;
 
-        if (length > 1) {
+        if (photo == null) {
+            photo = Unpooled.buffer();
+        }
 
-            if (photo == null) {
-                photo = Unpooled.buffer();
-            }
+        buf.readUnsignedByte(); // part number
 
-            buf.readUnsignedByte(); // part number
-            photo.writeBytes(buf, length - 1);
+        if (length > 1) {
 
-            sendResponse(channel, 0x07, buf.readUnsignedShortLE());
+            photo.writeBytes(buf, length - 1);
 
-        } else if (photo != null) {
+        } else {
 
             DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
             String uniqueId = Context.getIdentityManager().getById(deviceSession.getDeviceId()).getUniqueId();
@@ -336,6 +335,8 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
 
         }
 
+        sendResponse(channel, 0x07, buf.readUnsignedShortLE());
+
         return position;
     }
 
diff --git a/src/main/java/org/traccar/protocol/GoSafeProtocolDecoder.java b/src/main/java/org/traccar/protocol/GoSafeProtocolDecoder.java
index 76278070e..a86249224 100644
--- a/src/main/java/org/traccar/protocol/GoSafeProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/GoSafeProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -187,7 +187,12 @@ public class GoSafeProtocolDecoder extends BaseProtocolDecoder {
         int index = 0;
         String[] fragments = sentence.split(",");
 
-        position.setTime(new SimpleDateFormat("HHmmssddMMyy").parse(fragments[index++]));
+        if (fragments[index].matches("[0-9]{12}")) {
+            position.setTime(new SimpleDateFormat("HHmmssddMMyy").parse(fragments[index++]));
+        } else {
+            getLastLocation(position, null);
+            position.set(Position.KEY_RESULT, fragments[index++]);
+        }
 
         for (; index < fragments.length; index += 1) {
             if (!fragments[index].isEmpty()) {
diff --git a/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
index 2ca71a1ae..d74f19179 100644
--- a/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
@@ -140,8 +140,6 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             return Position.ALARM_FUEL_LEAK;
         }
         switch (value) {
-            case "tracker":
-                return null;
             case "help me":
                 return Position.ALARM_SOS;
             case "low battery":
@@ -152,10 +150,6 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
                 return Position.ALARM_MOVEMENT;
             case "speed":
                 return Position.ALARM_OVERSPEED;
-            case "acc on":
-                return Position.ALARM_POWER_ON;
-            case "acc off":
-                return Position.ALARM_POWER_OFF;
             case "door alarm":
                 return Position.ALARM_DOOR;
             case "ac alarm":
@@ -163,13 +157,14 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             case "accident alarm":
                 return Position.ALARM_ACCIDENT;
             case "sensor alarm":
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case "bonnet alarm":
                 return Position.ALARM_BONNET;
             case "footbrake alarm":
                 return Position.ALARM_FOOT_BRAKE;
             case "DTC":
                 return Position.ALARM_FAULT;
+            case "tracker":
             default:
                 return null;
         }
diff --git a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
index 281234ebb..0dcdab892 100644
--- a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -56,7 +56,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
 
     public static final int MSG_LOGIN = 0x01;
     public static final int MSG_GPS = 0x10;
-    public static final int MSG_LBS = 0x11;
+    public static final int MSG_GPS_LBS_6 = 0x11;
     public static final int MSG_GPS_LBS_1 = 0x12;
     public static final int MSG_GPS_LBS_2 = 0x22;
     public static final int MSG_GPS_LBS_3 = 0x37;
@@ -78,8 +78,11 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_HEARTBEAT = 0x23;
     public static final int MSG_ADDRESS_REQUEST = 0x2A;
     public static final int MSG_ADDRESS_RESPONSE = 0x97;
-    public static final int MSG_AZ735_GPS = 0x32;
-    public static final int MSG_AZ735_ALARM = 0x33;
+    public static final int MSG_GPS_LBS_5 = 0x31;
+    public static final int MSG_GPS_LBS_STATUS_4 = 0x32;
+    public static final int MSG_WIFI_5 = 0x33;
+    public static final int MSG_AZ735_GPS = 0x32; // only extended
+    public static final int MSG_AZ735_ALARM = 0x33; // only extended
     public static final int MSG_X1_GPS = 0x34;
     public static final int MSG_X1_PHOTO_INFO = 0x35;
     public static final int MSG_X1_PHOTO_DATA = 0x36;
@@ -120,9 +123,12 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             case MSG_GPS_LBS_2:
             case MSG_GPS_LBS_3:
             case MSG_GPS_LBS_4:
+            case MSG_GPS_LBS_5:
+            case MSG_GPS_LBS_6:
             case MSG_GPS_LBS_STATUS_1:
             case MSG_GPS_LBS_STATUS_2:
             case MSG_GPS_LBS_STATUS_3:
+            case MSG_GPS_LBS_STATUS_4:
             case MSG_GPS_PHONE:
             case MSG_GPS_LBS_EXTEND:
             case MSG_GPS_2:
@@ -136,15 +142,17 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
 
     private static boolean hasLbs(int type) {
         switch (type) {
-            case MSG_LBS:
             case MSG_LBS_STATUS:
             case MSG_GPS_LBS_1:
             case MSG_GPS_LBS_2:
             case MSG_GPS_LBS_3:
             case MSG_GPS_LBS_4:
+            case MSG_GPS_LBS_5:
+            case MSG_GPS_LBS_6:
             case MSG_GPS_LBS_STATUS_1:
             case MSG_GPS_LBS_STATUS_2:
             case MSG_GPS_LBS_STATUS_3:
+            case MSG_GPS_LBS_STATUS_4:
             case MSG_GPS_2:
             case MSG_FENCE_SINGLE:
             case MSG_FENCE_MULTI:
@@ -163,6 +171,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             case MSG_GPS_LBS_STATUS_1:
             case MSG_GPS_LBS_STATUS_2:
             case MSG_GPS_LBS_STATUS_3:
+            case MSG_GPS_LBS_STATUS_4:
                 return true;
             default:
                 return false;
@@ -267,7 +276,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
         return true;
     }
 
-    private boolean decodeLbs(Position position, ByteBuf buf, boolean hasLength) {
+    private boolean decodeLbs(Position position, ByteBuf buf, int type, boolean hasLength) {
 
         int length = 0;
         if (hasLength) {
@@ -288,10 +297,11 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
         }
 
         int mcc = buf.readUnsignedShort();
-        int mnc = BitUtil.check(mcc, 15) ? buf.readUnsignedShort() : buf.readUnsignedByte();
+        int mnc = BitUtil.check(mcc, 15) || type == MSG_GPS_LBS_6 ? buf.readUnsignedShort() : buf.readUnsignedByte();
+        int lac = buf.readUnsignedShort();
+        long cid = type == MSG_GPS_LBS_6 ? buf.readUnsignedInt() : buf.readUnsignedMedium();
 
-        position.setNetwork(new Network(CellTower.from(
-                BitUtil.to(mcc, 15), mnc, buf.readUnsignedShort(), buf.readUnsignedMedium())));
+        position.setNetwork(new Network(CellTower.from(BitUtil.to(mcc, 15), mnc, lac, cid)));
 
         if (length > 9) {
             buf.skipBytes(length - 9);
@@ -311,7 +321,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
 
         switch (BitUtil.between(status, 3, 6)) {
             case 1:
-                position.set(Position.KEY_ALARM, Position.ALARM_SHOCK);
+                position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION);
                 break;
             case 2:
                 position.set(Position.KEY_ALARM, Position.ALARM_POWER_CUT);
@@ -690,9 +700,9 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             return null; // space10x multi-lbs message
 
         } else if (type == MSG_LBS_MULTIPLE_1 || type == MSG_LBS_MULTIPLE_2 || type == MSG_LBS_EXTEND
-                || type == MSG_LBS_WIFI || type == MSG_LBS_2 || type == MSG_WIFI_3) {
+                || type == MSG_LBS_WIFI || type == MSG_LBS_2 || type == MSG_WIFI_3 || type == MSG_WIFI_5) {
 
-            boolean longFormat = type == MSG_LBS_2 || type == MSG_WIFI_3;
+            boolean longFormat = type == MSG_LBS_2 || type == MSG_WIFI_3 || type == MSG_WIFI_5;
 
             DateBuilder dateBuilder = new DateBuilder(deviceSession.getTimeZone())
                     .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
@@ -703,7 +713,9 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             int mcc = buf.readUnsignedShort();
             int mnc = BitUtil.check(mcc, 15) ? buf.readUnsignedShort() : buf.readUnsignedByte();
             Network network = new Network();
-            for (int i = 0; i < 7; i++) {
+
+            int cellCount = type == MSG_WIFI_5 ? 6 : 7;
+            for (int i = 0; i < cellCount; i++) {
                 int lac = longFormat ? buf.readInt() : buf.readUnsignedShort();
                 int cid = longFormat ? (int) buf.readLong() : buf.readUnsignedMedium();
                 int rssi = -buf.readUnsignedByte();
@@ -875,7 +887,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
         }
 
         if (hasLbs(type)) {
-            decodeLbs(position, buf, hasStatus(type));
+            decodeLbs(position, buf, type, hasStatus(type));
         }
 
         if (hasStatus(type)) {
@@ -1043,7 +1055,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                 getLastLocation(position, position.getDeviceTime());
             }
 
-            if (decodeLbs(position, buf, true)) {
+            if (decodeLbs(position, buf, type, true)) {
                 position.set(Position.KEY_RSSI, buf.readUnsignedByte());
             }
 
@@ -1131,7 +1143,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
 
         } else if (type == MSG_GPS_MODULAR) {
 
-            return decodeExtendedModular(buf, deviceSession);
+            return decodeExtendedModular(channel, buf, deviceSession);
 
         } else {
 
@@ -1142,7 +1154,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
-    private Object decodeExtendedModular(ByteBuf buf, DeviceSession deviceSession) {
+    private Object decodeExtendedModular(Channel channel, ByteBuf buf, DeviceSession deviceSession) {
 
         Position position = new Position(getProtocolName());
         position.setDeviceId(deviceSession.getDeviceId());
@@ -1243,6 +1255,12 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
+        if (position.getFixTime() == null) {
+            getLastLocation(position, null);
+        }
+
+        sendResponse(channel, false, MSG_GPS_MODULAR, buf.readUnsignedShort(), null);
+
         return position;
     }
 
diff --git a/src/main/java/org/traccar/protocol/HoopoProtocol.java b/src/main/java/org/traccar/protocol/HoopoProtocol.java
new file mode 100644
index 000000000..387b967d3
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/HoopoProtocol.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class HoopoProtocol extends BaseProtocol {
+
+    public HoopoProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new JsonFrameDecoder());
+                pipeline.addLast(new StringEncoder());
+                pipeline.addLast(new StringDecoder());
+                pipeline.addLast(new HoopoProtocolDecoder(HoopoProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/HoopoProtocolDecoder.java b/src/main/java/org/traccar/protocol/HoopoProtocolDecoder.java
new file mode 100644
index 000000000..65333ba6e
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/HoopoProtocolDecoder.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.model.Position;
+
+import javax.json.Json;
+import javax.json.JsonObject;
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.time.OffsetDateTime;
+import java.util.Date;
+
+public class HoopoProtocolDecoder extends BaseProtocolDecoder {
+
+    public HoopoProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        JsonObject json = Json.createReader(new StringReader((String) msg)).readObject();
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, json.getString("deviceId"));
+        if (deviceSession == null) {
+            return null;
+        }
+
+        if (json.containsKey("eventData")) {
+
+            JsonObject eventData = json.getJsonObject("eventData");
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            Date time = new Date(OffsetDateTime.parse(json.getString("eventTime")).toInstant().toEpochMilli());
+            position.setTime(time);
+
+            position.setValid(true);
+            position.setLatitude(eventData.getJsonNumber("latitude").doubleValue());
+            position.setLongitude(eventData.getJsonNumber("longitude").doubleValue());
+
+            position.set(Position.KEY_EVENT, eventData.getString("eventType"));
+            position.set(Position.KEY_BATTERY_LEVEL, eventData.getInt("batteryLevel"));
+
+            return position;
+
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java b/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java
index 2e1ddf5f2..891046213 100644
--- a/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java
@@ -262,6 +262,13 @@ public class HuaShengProtocolDecoder extends BaseProtocolDecoder {
                 case 0x0011:
                     position.set(Position.KEY_HOURS, buf.readUnsignedInt() * 0.05);
                     break;
+                case 0x0014:
+                    position.set(Position.KEY_ENGINE_LOAD, buf.readUnsignedByte() / 255.0);
+                    position.set("timingAdvance", buf.readUnsignedByte() * 0.5);
+                    position.set("airTemp", buf.readUnsignedByte() - 40);
+                    position.set("airFlow", buf.readUnsignedShort() * 0.01);
+                    position.set(Position.KEY_THROTTLE, buf.readUnsignedByte() / 255.0);
+                    break;
                 case 0x0020:
                     String[] cells = buf.readCharSequence(
                             length, StandardCharsets.US_ASCII).toString().split("\\+");
diff --git a/src/main/java/org/traccar/protocol/HuabaoProtocolDecoder.java b/src/main/java/org/traccar/protocol/HuabaoProtocolDecoder.java
index 37d7ae718..aa85ea061 100644
--- a/src/main/java/org/traccar/protocol/HuabaoProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/HuabaoProtocolDecoder.java
@@ -53,12 +53,14 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_TERMINAL_CONTROL = 0x8105;
     public static final int MSG_TERMINAL_AUTH = 0x0102;
     public static final int MSG_LOCATION_REPORT = 0x0200;
+    public static final int MSG_ACCELERATION = 0x2070;
     public static final int MSG_LOCATION_REPORT_2 = 0x5501;
     public static final int MSG_LOCATION_REPORT_BLIND = 0x5502;
     public static final int MSG_LOCATION_BATCH = 0x0704;
     public static final int MSG_OIL_CONTROL = 0XA006;
     public static final int MSG_TIME_SYNC_REQUEST = 0x0109;
     public static final int MSG_TIME_SYNC_RESPONSE = 0x8109;
+    public static final int MSG_PHOTO = 0x8888;
 
     public static final int RESULT_SUCCESS = 0;
 
@@ -71,7 +73,7 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         if (shortIndex) {
             buf.writeByte(1);
         } else {
-            buf.writeShort(1);
+            buf.writeShort(0);
         }
         buf.writeBytes(data);
         data.release();
@@ -135,6 +137,11 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
+    private int readSignedWord(ByteBuf buf) {
+        int value = buf.readUnsignedShort();
+        return BitUtil.check(value, 15) ? -BitUtil.to(value, 15) : BitUtil.to(value, 15);
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -176,7 +183,7 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
                         formatMessage(MSG_TERMINAL_REGISTER_RESPONSE, id, false, response), remoteAddress));
             }
 
-        } else if (type == MSG_TERMINAL_AUTH || type == MSG_HEARTBEAT) {
+        } else if (type == MSG_TERMINAL_AUTH || type == MSG_HEARTBEAT || type == MSG_PHOTO) {
 
             sendGeneralResponse(channel, remoteAddress, id, type, index);
 
@@ -215,6 +222,33 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
                         formatMessage(MSG_TERMINAL_REGISTER_RESPONSE, id, false, response), remoteAddress));
             }
 
+        } else if (type == MSG_ACCELERATION) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            getLastLocation(position, null);
+
+            StringBuilder data = new StringBuilder("[");
+            while (buf.readableBytes() > 2) {
+                buf.skipBytes(6); // time
+                if (data.length() > 1) {
+                    data.append(",");
+                }
+                data.append("[");
+                data.append(readSignedWord(buf));
+                data.append(",");
+                data.append(readSignedWord(buf));
+                data.append(",");
+                data.append(readSignedWord(buf));
+                data.append("]");
+            }
+            data.append("]");
+
+            position.set(Position.KEY_G_SENSOR, data.toString());
+
+            return position;
+
         }
 
         return null;
@@ -232,6 +266,76 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
+    private void decodeExtension(Position position, ByteBuf buf, int endIndex) {
+        while (buf.readerIndex() < endIndex) {
+            int type = buf.readUnsignedByte();
+            int length = buf.readUnsignedByte();
+            switch (type) {
+                case 0x01:
+                    position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 100L);
+                    break;
+                case 0x02:
+                    position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.1);
+                    break;
+                case 0x03:
+                    position.set(Position.KEY_OBD_SPEED, buf.readUnsignedShort() * 0.1);
+                    break;
+                case 0x80:
+                    position.set(Position.KEY_OBD_SPEED, buf.readUnsignedByte());
+                    break;
+                case 0x81:
+                    position.set(Position.KEY_RPM, buf.readUnsignedShort());
+                    break;
+                case 0x82:
+                    position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.1);
+                    break;
+                case 0x83:
+                    position.set(Position.KEY_ENGINE_LOAD, buf.readUnsignedByte());
+                    break;
+                case 0x84:
+                    position.set(Position.KEY_COOLANT_TEMP, buf.readUnsignedByte() - 40);
+                    break;
+                case 0x85:
+                    position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedShort());
+                    break;
+                case 0x86:
+                    position.set("intakeTemp", buf.readUnsignedByte() - 40);
+                    break;
+                case 0x87:
+                    position.set("intakeFlow", buf.readUnsignedShort());
+                    break;
+                case 0x88:
+                    position.set("intakePressure", buf.readUnsignedByte());
+                    break;
+                case 0x89:
+                    position.set(Position.KEY_THROTTLE, buf.readUnsignedByte());
+                    break;
+                case 0x8B:
+                    position.set(Position.KEY_VIN, buf.readCharSequence(17, StandardCharsets.US_ASCII).toString());
+                    break;
+                case 0x8C:
+                    position.set(Position.KEY_OBD_ODOMETER, buf.readUnsignedInt() * 100L);
+                    break;
+                case 0x8D:
+                    position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 1000L);
+                    break;
+                case 0x8E:
+                    position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
+                    break;
+                case 0xA0:
+                    String codes = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString();
+                    position.set(Position.KEY_DTCS, codes.replace(',', ' '));
+                    break;
+                case 0xCC:
+                    position.set(Position.KEY_ICCID, buf.readCharSequence(20, StandardCharsets.US_ASCII).toString());
+                    break;
+                default:
+                    buf.skipBytes(length);
+                    break;
+            }
+        }
+    }
+
     private Position decodeLocation(DeviceSession deviceSession, ByteBuf buf) {
 
         Position position = new Position(getProtocolName());
@@ -312,6 +416,11 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
                         position.set(Position.KEY_BATTERY, Integer.parseInt(lockStatus.substring(2, 5)) * 0.01);
                     }
                     break;
+                case 0x80:
+                    buf.readUnsignedByte(); // content
+                    endIndex = buf.writerIndex() - 2;
+                    decodeExtension(position, buf, endIndex);
+                    break;
                 case 0x91:
                     position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.1);
                     position.set(Position.KEY_RPM, buf.readUnsignedShort());
@@ -332,6 +441,13 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
                                 Position.KEY_VIN, buf.readCharSequence(length, StandardCharsets.US_ASCII).toString());
                     }
                     break;
+                case 0xA7:
+                    position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
+                    position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
+                    break;
+                case 0xAC:
+                    position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+                    break;
                 case 0xD0:
                     long userStatus = buf.readUnsignedInt();
                     if (BitUtil.check(userStatus, 3)) {
@@ -389,6 +505,16 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
                         }
                     }
                     break;
+                case 0xED:
+                    String license = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString().trim();
+                    position.set("driverLicense", license);
+                    break;
+                case 0xEE:
+                    position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+                    position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
+                    position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
+                    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+                    break;
                 default:
                     break;
             }
@@ -450,11 +576,15 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         List<Position> positions = new LinkedList<>();
 
         int count = buf.readUnsignedShort();
-        buf.readUnsignedByte(); // location type
+        int locationType = buf.readUnsignedByte();
 
         for (int i = 0; i < count; i++) {
             int endIndex = buf.readUnsignedShort() + buf.readerIndex();
-            positions.add(decodeLocation(deviceSession, buf));
+            Position position = decodeLocation(deviceSession, buf);
+            if (locationType > 0) {
+                position.set(Position.KEY_ARCHIVE, true);
+            }
+            positions.add(position);
             buf.readerIndex(endIndex);
         }
 
diff --git a/src/main/java/org/traccar/protocol/StbFrameDecoder.java b/src/main/java/org/traccar/protocol/JsonFrameDecoder.java
index 6a4157f17..b2d7fbd53 100644
--- a/src/main/java/org/traccar/protocol/StbFrameDecoder.java
+++ b/src/main/java/org/traccar/protocol/JsonFrameDecoder.java
@@ -20,7 +20,7 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
 import org.traccar.BaseFrameDecoder;
 
-public class StbFrameDecoder extends BaseFrameDecoder {
+public class JsonFrameDecoder extends BaseFrameDecoder {
 
     @Override
     protected Object decode(
diff --git a/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java
index d745153a4..dc4bd3486 100644
--- a/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2012 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -87,7 +87,7 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
     }
 
     static boolean isLongFormat(ByteBuf buf, int flagIndex) {
-        return buf.getUnsignedByte(flagIndex) >> 4 == 0x7;
+        return buf.getUnsignedByte(flagIndex) >> 4 >= 7;
     }
 
     static void decodeBinaryLocation(ByteBuf buf, Position position) {
@@ -141,6 +141,8 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
         int version = BitUtil.from(buf.readUnsignedByte(), 4);
         buf.readUnsignedShort(); // length
 
+        boolean responseRequired = false;
+
         while (buf.readableBytes() > 1) {
 
             Position position = new Position(getProtocolName());
@@ -160,6 +162,9 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
                 position.set(Position.KEY_ALARM, BitUtil.check(status, 2) ? Position.ALARM_GEOFENCE_EXIT : null);
                 position.set(Position.KEY_ALARM, BitUtil.check(status, 3) ? Position.ALARM_POWER_CUT : null);
                 position.set(Position.KEY_ALARM, BitUtil.check(status, 4) ? Position.ALARM_VIBRATION : null);
+                if (BitUtil.check(status, 5)) {
+                    responseRequired = true;
+                }
                 position.set(Position.KEY_BLOCKED, BitUtil.check(status, 7));
                 position.set(Position.KEY_ALARM, BitUtil.check(status, 8 + 3) ? Position.ALARM_LOW_BATTERY : null);
                 position.set(Position.KEY_ALARM, BitUtil.check(status, 8 + 6) ? Position.ALARM_FAULT : null);
@@ -176,7 +181,7 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
                 cellTower.setSignalStrength((int) buf.readUnsignedByte());
                 position.setNetwork(new Network(cellTower));
 
-                if (protocolVersion == 0x17) {
+                if (protocolVersion == 0x17 || protocolVersion == 0x19) {
                     buf.readUnsignedByte(); // geofence id
                     buf.skipBytes(3); // reserved
                     buf.skipBytes(buf.readableBytes() - 1);
@@ -232,7 +237,15 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
 
         }
 
-        buf.readUnsignedByte(); // index
+        int index = buf.readUnsignedByte();
+
+        if (channel != null && responseRequired) {
+            if (protocolVersion < 0x19) {
+                channel.writeAndFlush(new NetworkMessage("(P35)", remoteAddress));
+            } else {
+                channel.writeAndFlush(new NetworkMessage("(P69,0," + index + ")", remoteAddress));
+            }
+        }
 
         return positions;
     }
diff --git a/src/main/java/org/traccar/protocol/LaipacProtocolDecoder.java b/src/main/java/org/traccar/protocol/LaipacProtocolDecoder.java
index 4abb75025..45890e9a2 100644
--- a/src/main/java/org/traccar/protocol/LaipacProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/LaipacProtocolDecoder.java
@@ -93,7 +93,7 @@ public class LaipacProtocolDecoder extends BaseProtocolDecoder {
             case "H":
                 return Position.ALARM_POWER_OFF;
             case "8":
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case "7":
             case "4":
                 return Position.ALARM_GEOFENCE_EXIT;
diff --git a/src/main/java/org/traccar/protocol/MegastekProtocolDecoder.java b/src/main/java/org/traccar/protocol/MegastekProtocolDecoder.java
index e63dd3b32..7233280c2 100644
--- a/src/main/java/org/traccar/protocol/MegastekProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/MegastekProtocolDecoder.java
@@ -423,7 +423,7 @@ public class MegastekProtocolDecoder extends BaseProtocolDecoder {
             case "psr":
                 return Position.ALARM_POWER_RESTORED;
             case "hit":
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case "belt on":
             case "belton":
                 return Position.ALARM_LOCK;
diff --git a/src/main/java/org/traccar/protocol/MeitrackProtocolDecoder.java b/src/main/java/org/traccar/protocol/MeitrackProtocolDecoder.java
index 9b12f1c15..0eb6f8776 100644
--- a/src/main/java/org/traccar/protocol/MeitrackProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/MeitrackProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2012 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -68,15 +69,23 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
             .number("(d+),")                     // runtime
             .number("(d+)|")                     // mcc
             .number("(d+)|")                     // mnc
-            .number("(x+)|")                     // lac
-            .number("(x+),")                     // cid
+            .number("(x+)?|")                    // lac
+            .number("(x+)?,")                    // cid
             .number("(xx)")                      // input
             .number("(xx),")                     // output
+            .groupBegin()
+            .number("(d+.d+)|")                  // battery
+            .number("(d+.d+)|")                  // power
+            .number("d+.d+|")                    // rtc voltage
+            .number("d+.d+|")                    // mcu voltage
+            .number("d+.d+,")                    // gps voltage
+            .or()
             .number("(x+)?|")                    // adc1
             .number("(x+)?|")                    // adc2
             .number("(x+)?|")                    // adc3
             .number("(x+)|")                     // battery
             .number("(x+)?,")                    // power
+            .groupEnd()
             .groupBegin()
             .expression("([^,]+)?,").optional()  // event specific
             .expression("[^,]*,")                // reserved
@@ -174,51 +183,70 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
         position.set(Position.KEY_ODOMETER, parser.nextInt());
         position.set("runtime", parser.next());
 
-        position.setNetwork(new Network(CellTower.from(
-                parser.nextInt(), parser.nextInt(), parser.nextHexInt(), parser.nextHexInt(), rssi)));
+        int mcc = parser.nextInt();
+        int mnc = parser.nextInt();
+        int lac = parser.nextHexInt(0);
+        int cid = parser.nextHexInt(0);
+        if (mcc != 0 && mnc != 0) {
+            position.setNetwork(new Network(CellTower.from(mcc, mnc, lac, cid, rssi)));
+        }
 
-        position.set(Position.KEY_INPUT, parser.nextHexInt());
-        position.set(Position.KEY_OUTPUT, parser.nextHexInt());
+        int input = parser.nextHexInt();
+        int output = parser.nextHexInt();
 
-        for (int i = 1; i <= 3; i++) {
-            position.set(Position.PREFIX_ADC + i, parser.nextHexInt());
-        }
+        position.set(Position.KEY_IGNITION, BitUtil.check(input, 2));
+
+        position.set(Position.KEY_INPUT, input);
+        position.set(Position.KEY_OUTPUT, output);
+
+        if (parser.hasNext(2)) {
+
+            position.set(Position.KEY_BATTERY, parser.nextDouble());
+            position.set(Position.KEY_POWER, parser.nextDouble());
+
+        } else {
+
+            for (int i = 1; i <= 3; i++) {
+                position.set(Position.PREFIX_ADC + i, parser.nextHexInt());
+            }
+
+            String deviceModel = Context.getIdentityManager().getById(deviceSession.getDeviceId()).getModel();
+            if (deviceModel == null) {
+                deviceModel = "";
+            }
+            switch (deviceModel.toUpperCase()) {
+                case "MVT340":
+                case "MVT380":
+                    position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.0 * 2.0 / 1024.0);
+                    position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.0 * 16.0 / 1024.0);
+                    break;
+                case "MT90":
+                    position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0);
+                    position.set(Position.KEY_POWER, parser.nextHexInt(0));
+                    break;
+                case "T1":
+                case "T3":
+                case "MVT100":
+                case "MVT600":
+                case "MVT800":
+                case "TC68":
+                case "TC68S":
+                    position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0);
+                    position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.3 * 16.0 / 4096.0);
+                    break;
+                case "T311":
+                case "T322X":
+                case "T333":
+                case "T355":
+                    position.set(Position.KEY_BATTERY, parser.nextHexInt(0) / 100.0);
+                    position.set(Position.KEY_POWER, parser.nextHexInt(0) / 100.0);
+                    break;
+                default:
+                    position.set(Position.KEY_BATTERY, parser.nextHexInt(0));
+                    position.set(Position.KEY_POWER, parser.nextHexInt(0));
+                    break;
+            }
 
-        String deviceModel = Context.getIdentityManager().getById(deviceSession.getDeviceId()).getModel();
-        if (deviceModel == null) {
-            deviceModel = "";
-        }
-        switch (deviceModel.toUpperCase()) {
-            case "MVT340":
-            case "MVT380":
-                position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.0 * 2.0 / 1024.0);
-                position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.0 * 16.0 / 1024.0);
-                break;
-            case "MT90":
-                position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0);
-                position.set(Position.KEY_POWER, parser.nextHexInt(0));
-                break;
-            case "T1":
-            case "T3":
-            case "MVT100":
-            case "MVT600":
-            case "MVT800":
-            case "TC68":
-            case "TC68S":
-                position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0);
-                position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.3 * 16.0 / 4096.0);
-                break;
-            case "T311":
-            case "T322X":
-            case "T333":
-            case "T355":
-                position.set(Position.KEY_BATTERY, parser.nextHexInt(0) / 100.0);
-                position.set(Position.KEY_POWER, parser.nextHexInt(0) / 100.0);
-                break;
-            default:
-                position.set(Position.KEY_BATTERY, parser.nextHexInt(0));
-                position.set(Position.KEY_POWER, parser.nextHexInt(0));
-                break;
         }
 
         String eventData = parser.next();
diff --git a/src/main/java/org/traccar/protocol/MiniFinderProtocolDecoder.java b/src/main/java/org/traccar/protocol/MiniFinderProtocolDecoder.java
index 2b7a960c4..d5be31cec 100644
--- a/src/main/java/org/traccar/protocol/MiniFinderProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/MiniFinderProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 - 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2014 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -143,7 +143,7 @@ public class MiniFinderProtocolDecoder extends BaseProtocolDecoder {
         }
 
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
-        if (deviceSession == null || !sentence.matches("![3A-D],.*")) {
+        if (deviceSession == null || !sentence.matches("![35A-D],.*")) {
             return null;
         }
 
@@ -161,6 +161,19 @@ public class MiniFinderProtocolDecoder extends BaseProtocolDecoder {
 
             return position;
 
+        } else if (type.equals("5")) {
+
+            String[] values = sentence.split(",");
+
+            getLastLocation(position, null);
+
+            position.set(Position.KEY_RSSI, Integer.parseInt(values[1]));
+            if (values.length >= 4) {
+                position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(values[3]));
+            }
+
+            return position;
+
         } else if (type.equals("B") || type.equals("D")) {
 
             Parser parser = new Parser(PATTERN_BD, sentence);
diff --git a/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
index 059041d6b..641a45864 100644
--- a/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
@@ -124,6 +124,14 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
+    private String readTagId(ByteBuf buf) {
+        StringBuilder tagId = new StringBuilder();
+        for (int i = 0; i < 6; i++) {
+            tagId.insert(0, ByteBufUtil.hexDump(buf.readSlice(1)));
+        }
+        return tagId.toString();
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -214,7 +222,7 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
                         }
                         break;
                     case 0x23:
-                        position.set("tagId", ByteBufUtil.hexDump(buf.readSlice(6)));
+                        position.set("tagId", readTagId(buf));
                         position.setLatitude(buf.readIntLE() * 0.0000001);
                         position.setLongitude(buf.readIntLE() * 0.0000001);
                         position.setValid(true);
@@ -228,9 +236,9 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
                         break;
                     case 0x28:
                         int beaconFlags = buf.readUnsignedByte();
-                        position.set("tagId", ByteBufUtil.hexDump(buf.readSlice(6)));
-                        position.set("tagRssi", buf.readUnsignedByte());
-                        buf.readUnsignedByte(); // 1m rssi
+                        position.set("tagId", readTagId(buf));
+                        position.set("tagRssi", (int) buf.readByte());
+                        position.set("tag1mRssi", (int) buf.readByte());
                         if (BitUtil.check(beaconFlags, 7)) {
                             position.setLatitude(buf.readIntLE() * 0.0000001);
                             position.setLongitude(buf.readIntLE() * 0.0000001);
diff --git a/src/main/java/org/traccar/protocol/MobilogixProtocol.java b/src/main/java/org/traccar/protocol/MobilogixProtocol.java
index ebf2c9c7f..28380a2af 100644
--- a/src/main/java/org/traccar/protocol/MobilogixProtocol.java
+++ b/src/main/java/org/traccar/protocol/MobilogixProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2020 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,7 +28,7 @@ public class MobilogixProtocol extends BaseProtocol {
         addServer(new TrackerServer(false, getName()) {
             @Override
             protected void addProtocolHandlers(PipelineBuilder pipeline) {
-                pipeline.addLast(new CharacterDelimiterFrameDecoder(1024, "]\r\n", "]"));
+                pipeline.addLast(new CharacterDelimiterFrameDecoder(1024, ']'));
                 pipeline.addLast(new StringEncoder());
                 pipeline.addLast(new StringDecoder());
                 pipeline.addLast(new MobilogixProtocolDecoder(MobilogixProtocol.this));
diff --git a/src/main/java/org/traccar/protocol/MobilogixProtocolDecoder.java b/src/main/java/org/traccar/protocol/MobilogixProtocolDecoder.java
index 8677ba9ec..86c89e336 100644
--- a/src/main/java/org/traccar/protocol/MobilogixProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/MobilogixProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2020 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -39,28 +39,52 @@ public class MobilogixProtocolDecoder extends BaseProtocolDecoder {
             .text("[")
             .number("(dddd)-(dd)-(dd) ")         // date (yyyymmdd)
             .number("(dd):(dd):(dd),")           // time (hhmmss)
-            .number("Td,")                       // type
-            .number("d+,")                       // device type
+            .number("Td+,")                      // type
+            .number("(d),")                      // archive
             .expression("[^,]+,")                // protocol version
             .expression("([^,]+),")              // serial number
             .number("(xx),")                     // status
-            .number("(d+.d+),")                  // battery
-            .number("(d)")                       // valid
+            .number("(d+.d+)")                   // battery
+            .groupBegin()
+            .text(",")
+            .number("(d)")                       // satellites
             .number("(d)")                       // rssi
-            .number("(d),")                      // satellites
+            .number("(d),")                      // valid
             .number("(-?d+.d+),")                // latitude
             .number("(-?d+.d+),")                // longitude
             .number("(d+.?d*),")                 // speed
             .number("(d+.?d*)")                  // course
+            .groupEnd("?")
             .any()
             .compile();
 
+    private String decodeAlarm(String type) {
+        switch (type) {
+            case "T8":
+                return Position.ALARM_LOW_BATTERY;
+            case "T9":
+                return Position.ALARM_VIBRATION;
+            case "T10":
+                return Position.ALARM_POWER_CUT;
+            case "T11":
+                return Position.ALARM_LOW_POWER;
+            case "T12":
+                return Position.ALARM_GEOFENCE_EXIT;
+            case "T13":
+                return Position.ALARM_OVERSPEED;
+            case "T15":
+                return Position.ALARM_TOW;
+            default:
+                return null;
+        }
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        String sentence = (String) msg;
-        String type = sentence.substring(21, 21 + 2);
+        String sentence = ((String) msg).trim();
+        String type = sentence.substring(21, sentence.indexOf(',', 21));
 
         if (channel != null) {
             String time = sentence.substring(1, 20);
@@ -68,19 +92,22 @@ public class MobilogixProtocolDecoder extends BaseProtocolDecoder {
             if (type.equals("T1")) {
                 response = String.format("[%s,S1,1]", time);
             } else {
-                response = String.format("[%s,S%c]", time, type.charAt(1));
+                response = String.format("[%s,S%s]", time, type.substring(1));
             }
             channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
         }
 
-        Parser parser = new Parser(PATTERN, (String) msg);
+        Parser parser = new Parser(PATTERN, sentence);
         if (!parser.matches()) {
             return null;
         }
 
         Position position = new Position(getProtocolName());
 
-        position.setTime(parser.nextDateTime());
+        position.setDeviceTime(parser.nextDateTime());
+        if (parser.nextInt() == 0) {
+            position.set(Position.KEY_ARCHIVE, true);
+        }
 
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
         if (deviceSession == null) {
@@ -88,6 +115,9 @@ public class MobilogixProtocolDecoder extends BaseProtocolDecoder {
         }
         position.setDeviceId(deviceSession.getDeviceId());
 
+        position.set(Position.KEY_TYPE, type);
+        position.set(Position.KEY_ALARM, decodeAlarm(type));
+
         int status = parser.nextHexInt();
         position.set(Position.KEY_IGNITION, BitUtil.check(status, 2));
         position.set(Position.KEY_MOTION, BitUtil.check(status, 3));
@@ -95,15 +125,24 @@ public class MobilogixProtocolDecoder extends BaseProtocolDecoder {
 
         position.set(Position.KEY_BATTERY, parser.nextDouble());
 
-        position.setValid(parser.nextInt() > 0);
+        if (parser.hasNext(7)) {
 
-        position.set(Position.KEY_RSSI, parser.nextInt());
-        position.set(Position.KEY_SATELLITES, parser.nextInt());
+            position.set(Position.KEY_SATELLITES, parser.nextInt());
+            position.set(Position.KEY_RSSI, 6 * parser.nextInt() - 111);
 
-        position.setLatitude(parser.nextDouble());
-        position.setLongitude(parser.nextDouble());
-        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
-        position.setCourse(parser.nextDouble());
+            position.setValid(parser.nextInt() > 0);
+            position.setFixTime(position.getDeviceTime());
+
+            position.setLatitude(parser.nextDouble());
+            position.setLongitude(parser.nextDouble());
+            position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+            position.setCourse(parser.nextDouble());
+
+        } else {
+
+            getLastLocation(position, position.getDeviceTime());
+
+        }
 
         return position;
     }
diff --git a/src/main/java/org/traccar/protocol/MxtProtocolDecoder.java b/src/main/java/org/traccar/protocol/MxtProtocolDecoder.java
index 7bde85f87..379b610e1 100644
--- a/src/main/java/org/traccar/protocol/MxtProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/MxtProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -97,6 +97,10 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
             long date = buf.readUnsignedIntLE();
 
             long days = BitUtil.from(date, 6 + 6 + 5);
+            if (days < 7 * 780) {
+                days += 7 * 1024;
+            }
+
             long hours = BitUtil.between(date, 6 + 6, 6 + 6 + 5);
             long minutes = BitUtil.between(date, 6, 6 + 6);
             long seconds = BitUtil.to(date, 6);
diff --git a/src/main/java/org/traccar/protocol/NavtelecomFrameDecoder.java b/src/main/java/org/traccar/protocol/NavtelecomFrameDecoder.java
new file mode 100644
index 000000000..0fb82528b
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/NavtelecomFrameDecoder.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+import org.traccar.BasePipelineFactory;
+
+import java.nio.charset.StandardCharsets;
+import java.util.BitSet;
+
+public class NavtelecomFrameDecoder extends BaseFrameDecoder {
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        if (buf.getByte(buf.readerIndex()) == '@') {
+
+            int length = buf.getUnsignedShortLE(12) + 12 + 2 + 2;
+            if (buf.readableBytes() >= length) {
+                return buf.readRetainedSlice(length);
+            }
+
+        } else {
+
+            NavtelecomProtocolDecoder protocolDecoder =
+                    BasePipelineFactory.getHandler(ctx.pipeline(), NavtelecomProtocolDecoder.class);
+            if (protocolDecoder == null) {
+                throw new RuntimeException("Decoder not found");
+            }
+
+            String type = buf.getCharSequence(buf.readerIndex(), 2, StandardCharsets.US_ASCII).toString();
+            BitSet bits = protocolDecoder.getBits();
+
+            if (type.equals("~A")) {
+                int count = buf.getUnsignedByte(buf.readerIndex() + 2);
+                int length = 2 + 1 + 1;
+
+                for (int i = 0; i < count; i++) {
+                    for (int j = 0; j < bits.length(); j++) {
+                        if (bits.get(j)) {
+                            length += NavtelecomProtocolDecoder.getItemLength(j + 1);
+                        }
+                    }
+                }
+
+                if (buf.readableBytes() >= length) {
+                    return buf.readRetainedSlice(length);
+                }
+            } else {
+                throw new UnsupportedOperationException("Unsupported message type: " + type);
+            }
+
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/NavtelecomProtocol.java b/src/main/java/org/traccar/protocol/NavtelecomProtocol.java
index 29ad62e48..29ce8c41e 100644
--- a/src/main/java/org/traccar/protocol/NavtelecomProtocol.java
+++ b/src/main/java/org/traccar/protocol/NavtelecomProtocol.java
@@ -15,20 +15,17 @@
  */
 package org.traccar.protocol;
 
-import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
 import org.traccar.BaseProtocol;
 import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
-import java.nio.ByteOrder;
-
 public class NavtelecomProtocol extends BaseProtocol {
 
     public NavtelecomProtocol() {
         addServer(new TrackerServer(false, getName()) {
             @Override
             protected void addProtocolHandlers(PipelineBuilder pipeline) {
-                pipeline.addLast(new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 1024, 12, 2, 2, 0, true));
+                pipeline.addLast(new NavtelecomFrameDecoder());
                 pipeline.addLast(new NavtelecomProtocolDecoder(NavtelecomProtocol.this));
             }
         });
diff --git a/src/main/java/org/traccar/protocol/NavtelecomProtocolDecoder.java b/src/main/java/org/traccar/protocol/NavtelecomProtocolDecoder.java
index 2362b1870..bdcc12c4c 100644
--- a/src/main/java/org/traccar/protocol/NavtelecomProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/NavtelecomProtocolDecoder.java
@@ -19,12 +19,22 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
 import org.traccar.helper.Checksum;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
 
 import java.net.SocketAddress;
 import java.nio.charset.StandardCharsets;
+import java.util.BitSet;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
 
 public class NavtelecomProtocolDecoder extends BaseProtocolDecoder {
 
@@ -32,36 +42,210 @@ public class NavtelecomProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    @Override
-    protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+    private static final Map<Integer, Integer> ITEM_LENGTH_MAP = new HashMap<>();
 
-        ByteBuf buf = (ByteBuf) msg;
-
-        buf.skipBytes(4); // preamble
-        int receiver = buf.readIntLE();
-        int sender = buf.readIntLE();
-        int length = buf.readUnsignedShortLE();
-        buf.readUnsignedByte(); // data checksum
-        buf.readUnsignedByte(); // header checksum
+    static {
+        int[] l1 = {
+                4, 5, 6, 7, 8, 29, 30, 31, 32, 45, 46, 47, 48, 49, 50, 51, 52, 56, 63, 64, 65, 69, 72, 78, 79, 80, 81,
+                82, 83, 98, 99, 101, 104, 118, 122, 123, 124, 125, 126, 139, 140, 144, 145, 167, 168, 169, 170, 199,
+                202, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222
+        };
+        int[] l2 = {
+                2, 14, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 35, 36, 38, 39, 40, 41, 42, 43, 44, 53, 55, 58,
+                59, 60, 61, 62, 66, 68, 71, 75, 100, 106, 108, 110, 111, 112, 113, 114, 115, 116, 117, 119, 120, 121,
+                133, 134, 135, 136, 137, 138, 141, 143, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
+                160, 161, 162, 163, 164, 165, 166, 171, 175, 177, 178, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189,
+                190, 191, 192, 200, 201, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237
+        };
+        int[] l3 = {
+                84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 142, 146, 198
+        };
+        int[] l4 = {
+                1, 3, 9, 10, 11, 12, 13, 15, 16, 33, 34, 37, 54, 57, 67, 74, 76, 102, 103, 105, 127, 128, 129, 130, 131,
+                132, 172, 173, 174, 176, 179, 193, 194, 195, 196, 203, 205, 206, 238, 239, 240, 241, 242, 243, 244, 245,
+                246, 247, 248, 249, 250, 251, 252
+        };
+        for (int i : l1) {
+            ITEM_LENGTH_MAP.put(i, 1);
+        }
+        for (int i : l2) {
+            ITEM_LENGTH_MAP.put(i, 2);
+        }
+        for (int i : l3) {
+            ITEM_LENGTH_MAP.put(i, 3);
+        }
+        for (int i : l4) {
+            ITEM_LENGTH_MAP.put(i, 4);
+        }
+        ITEM_LENGTH_MAP.put(70, 8);
+        ITEM_LENGTH_MAP.put(73, 16);
+        ITEM_LENGTH_MAP.put(77, 37);
+        ITEM_LENGTH_MAP.put(94, 6);
+        ITEM_LENGTH_MAP.put(95, 12);
+        ITEM_LENGTH_MAP.put(96, 24);
+        ITEM_LENGTH_MAP.put(97, 48);
+        ITEM_LENGTH_MAP.put(107, 6);
+        ITEM_LENGTH_MAP.put(109, 6);
+        ITEM_LENGTH_MAP.put(197, 6);
+        ITEM_LENGTH_MAP.put(204, 5);
+        ITEM_LENGTH_MAP.put(253, 8);
+        ITEM_LENGTH_MAP.put(254, 8);
+        ITEM_LENGTH_MAP.put(255, 8);
+    }
 
-        String sentence = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString();
+    private BitSet bits;
 
-        if (sentence.startsWith("*>S")) {
+    public static int getItemLength(int id) {
+        Integer length = ITEM_LENGTH_MAP.get(id);
+        if (length == null) {
+            throw new IllegalArgumentException(String.format("Unknown item: %d", id));
+        }
+        return length;
+    }
 
-            String data = "*<S";
+    public BitSet getBits() {
+        return bits;
+    }
 
+    private void sendResponse(
+            Channel channel, SocketAddress remoteAddress, int receiver, int sender, ByteBuf content) {
+        if (channel != null) {
             ByteBuf response = Unpooled.buffer();
             response.writeCharSequence("@NTC", StandardCharsets.US_ASCII);
             response.writeIntLE(sender);
             response.writeIntLE(receiver);
-            response.writeShortLE(data.length());
-            response.writeByte(Checksum.xor(data));
+            response.writeShortLE(content.readableBytes());
+            response.writeByte(Checksum.xor(content.nioBuffer()));
             response.writeByte(Checksum.xor(response.nioBuffer()));
-            response.writeCharSequence(data, StandardCharsets.US_ASCII);
+            response.writeBytes(content);
+            content.release();
+
+            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        if (buf.getByte(buf.readerIndex()) == '@') {
+
+            buf.skipBytes(4); // preamble
+            int receiver = buf.readIntLE();
+            int sender = buf.readIntLE();
+            int length = buf.readUnsignedShortLE();
+            buf.readUnsignedByte(); // data checksum
+            buf.readUnsignedByte(); // header checksum
+
+            String type = buf.toString(buf.readerIndex(), 6, StandardCharsets.US_ASCII);
+
+            if (type.startsWith("*>S")) {
+
+                String sentence = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString();
+                getDeviceSession(channel, remoteAddress, sentence.substring(4));
+
+                ByteBuf payload = Unpooled.copiedBuffer("*<S", StandardCharsets.US_ASCII);
+
+                sendResponse(channel, remoteAddress, receiver, sender, payload);
+
+            } else if (type.startsWith("*>FLEX")) {
+
+                buf.skipBytes(6);
+
+                ByteBuf payload = Unpooled.buffer();
+                payload.writeCharSequence("*<FLEX", StandardCharsets.US_ASCII);
+                payload.writeByte(buf.readUnsignedByte()); // protocol
+                payload.writeByte(buf.readUnsignedByte()); // protocol version
+                payload.writeByte(buf.readUnsignedByte()); // struct version
+
+                int bitCount = buf.readUnsignedByte();
+                bits = new BitSet((bitCount + 7) / 8);
+
+                int currentByte = 0;
+                for (int i = 0; i < bitCount; i++) {
+                    if (i % 8 == 0) {
+                        currentByte = buf.readUnsignedByte();
+                    }
+                    bits.set(i, BitUtil.check(currentByte, 7 - i % 8));
+                }
+
+                sendResponse(channel, remoteAddress, receiver, sender, payload);
+
+            }
+
+        } else {
+
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+            if (deviceSession == null) {
+                return null;
+            }
+
+            String type = buf.readCharSequence(2, StandardCharsets.US_ASCII).toString();
+
+            if (type.equals("~A")) {
+
+                int count = buf.readUnsignedByte();
+                List<Position> positions = new LinkedList<>();
+
+                for (int i = 0; i < count; i++) {
+                    Position position = new Position(getProtocolName());
+                    position.setDeviceId(deviceSession.getDeviceId());
+
+                    for (int j = 0; j < bits.length(); j++) {
+                        if (bits.get(j)) {
+                            switch (j + 1) {
+                                case 1:
+                                    position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
+                                    break;
+                                case 2:
+                                    position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
+                                    break;
+                                case 3:
+                                    position.setDeviceTime(new Date(buf.readUnsignedIntLE() * 1000));
+                                    break;
+                                case 9:
+                                    position.setValid(true);
+                                    position.setFixTime(new Date(buf.readUnsignedIntLE() * 1000));
+                                    break;
+                                case 10:
+                                    position.setLatitude(buf.readIntLE() * 0.0001 / 60);
+                                    break;
+                                case 11:
+                                    position.setLongitude(buf.readIntLE() * 0.0001 / 60);
+                                    break;
+                                case 12:
+                                    position.setAltitude(buf.readIntLE() * 0.1);
+                                    break;
+                                case 13:
+                                    position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE()));
+                                    break;
+                                default:
+                                    buf.skipBytes(getItemLength(j + 1));
+                                    break;
+                            }
+                        }
+                    }
+
+                    if (position.getFixTime() == null) {
+                        getLastLocation(position, position.getDeviceTime());
+                    }
+
+                    positions.add(position);
+                }
+
+                int checksum = buf.readUnsignedByte();
+                if (channel != null) {
+                    ByteBuf response = Unpooled.buffer();
+                    response.writeCharSequence(type, StandardCharsets.US_ASCII);
+                    response.writeByte(count);
+                    response.writeByte(checksum);
+                    channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                }
+
+                return positions;
 
-            if (channel != null) {
-                channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
             }
 
         }
diff --git a/src/main/java/org/traccar/protocol/PortmanProtocolDecoder.java b/src/main/java/org/traccar/protocol/PortmanProtocolDecoder.java
index ebb93abd6..e1847a2b2 100644
--- a/src/main/java/org/traccar/protocol/PortmanProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/PortmanProtocolDecoder.java
@@ -80,7 +80,15 @@ public class PortmanProtocolDecoder extends BaseProtocolDecoder {
         position.set(Position.PREFIX_TEMP + 1, parser.next());
         position.set(Position.KEY_STATUS, parser.nextHexLong());
         position.set(Position.KEY_DRIVER_UNIQUE_ID, parser.next());
-        position.set(Position.KEY_EVENT, parser.nextInt());
+
+        int event = parser.nextInt();
+        position.set(Position.KEY_EVENT, event);
+        if (event == 253) {
+            position.set(Position.KEY_IGNITION, true);
+        } else if (event == 254) {
+            position.set(Position.KEY_IGNITION, false);
+        }
+
         position.set(Position.KEY_SATELLITES, parser.nextInt());
         position.set(Position.KEY_ODOMETER, parser.nextDouble() * 1000);
         position.set(Position.KEY_RSSI, parser.nextInt());
diff --git a/src/main/java/org/traccar/protocol/RuptelaProtocolDecoder.java b/src/main/java/org/traccar/protocol/RuptelaProtocolDecoder.java
index 5c2885a8b..2812d22ff 100644
--- a/src/main/java/org/traccar/protocol/RuptelaProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/RuptelaProtocolDecoder.java
@@ -102,6 +102,12 @@ public class RuptelaProtocolDecoder extends BaseProtocolDecoder {
             case 5:
                 position.set(Position.KEY_IGNITION, readValue(buf, length, false) == 1);
                 break;
+            case 29:
+                position.set(Position.KEY_POWER, readValue(buf, length, false));
+                break;
+            case 30:
+                position.set(Position.KEY_BATTERY, readValue(buf, length, false) * 0.001);
+                break;
             case 74:
                 position.set(Position.PREFIX_TEMP + 3, readValue(buf, length, true) * 0.1);
                 break;
@@ -110,22 +116,19 @@ public class RuptelaProtocolDecoder extends BaseProtocolDecoder {
             case 80:
                 position.set(Position.PREFIX_TEMP + (id - 78), readValue(buf, length, true) * 0.1);
                 break;
-            case 198:
-                if (readValue(buf, length, false) > 0) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
-                }
-                break;
-            case 199:
-            case 200:
+            case 134:
                 if (readValue(buf, length, false) > 0) {
                     position.set(Position.KEY_ALARM, Position.ALARM_BRAKING);
                 }
                 break;
-            case 201:
+            case 136:
                 if (readValue(buf, length, false) > 0) {
                     position.set(Position.KEY_ALARM, Position.ALARM_ACCELERATION);
                 }
                 break;
+            case 197:
+                position.set(Position.KEY_RPM, readValue(buf, length, false) * 0.125);
+                break;
             default:
                 position.set(Position.PREFIX_IO + id, readValue(buf, length, false));
                 break;
diff --git a/src/main/java/org/traccar/protocol/StarLinkProtocolDecoder.java b/src/main/java/org/traccar/protocol/StarLinkProtocolDecoder.java
index 82f0e4061..7a6b6f4fe 100644
--- a/src/main/java/org/traccar/protocol/StarLinkProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/StarLinkProtocolDecoder.java
@@ -150,9 +150,21 @@ public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
                 continue;
             }
             switch (dataTags[i]) {
+                case "#ALT#":
+                case "#ALTD#":
+                    position.setAltitude(Double.parseDouble(data[i]));
+                    break;
+                case "#DAL#":
+                case "#DID#":
+                    position.set(Position.KEY_DRIVER_UNIQUE_ID, data[i]);
+                    break;
                 case "#EDT#":
                     position.setDeviceTime(dateFormat.parse(data[i]));
                     break;
+                case "#EDV1#":
+                case "#EDV2#":
+                    position.set("external" + dataTags[i].charAt(4), data[i]);
+                    break;
                 case "#EID#":
                     event = Integer.parseInt(data[i]);
                     position.set(Position.KEY_ALARM, decodeAlarm(event));
@@ -166,6 +178,9 @@ public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
                 case "#EDSC#":
                     position.set("reason", data[i]);
                     break;
+                case "#IARM#":
+                    position.set(Position.KEY_ARMED, Integer.parseInt(data[i]) > 0);
+                    break;
                 case "#PDT#":
                     position.setFixTime(dateFormat.parse(data[i]));
                     break;
@@ -185,11 +200,15 @@ public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
                     position.setCourse(Integer.parseInt(data[i]));
                     break;
                 case "#ODO#":
+                case "#ODOD#":
                     position.set(Position.KEY_ODOMETER, (long) (Double.parseDouble(data[i]) * 1000));
                     break;
                 case "#BATC#":
                     position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(data[i]));
                     break;
+                case "#BATH#":
+                    position.set("batteryHealth", Integer.parseInt(data[i]));
+                    break;
                 case "#TVI#":
                     position.set(Position.KEY_DEVICE_TEMP, Double.parseDouble(data[i]));
                     break;
@@ -217,6 +236,9 @@ public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
                 case "#OUTD#":
                     position.set(Position.PREFIX_OUT + (dataTags[i].charAt(4) - 'A' + 1), Integer.parseInt(data[i]));
                     break;
+                case "#PDOP#":
+                    position.set(Position.KEY_PDOP, Double.parseDouble(data[i]));
+                    break;
                 case "#LAC#":
                     if (!data[i].isEmpty()) {
                         lac = Integer.parseInt(data[i]);
@@ -241,18 +263,23 @@ public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
                     break;
                 case "#IGN#":
                 case "#IGNL#":
-                    position.set(Position.KEY_IGNITION, data[i].equals("1"));
-                    break;
                 case "#ENG#":
-                    position.set("engine", data[i].equals("1"));
+                    position.set(Position.KEY_IGNITION, Integer.parseInt(data[i]) > 0);
                     break;
                 case "#DUR#":
                 case "#TDUR#":
                     position.set(Position.KEY_HOURS, Integer.parseInt(data[i]));
                     break;
+                case "#SAT#":
+                case "#SATN#":
+                    position.set(Position.KEY_SATELLITES_VISIBLE, Integer.parseInt(data[i]));
+                    break;
                 case "#SATU#":
                     position.set(Position.KEY_SATELLITES, Integer.parseInt(data[i]));
                     break;
+                case "#STRT#":
+                    position.set("starter", Double.parseDouble(data[i]));
+                    break;
                 case "#TS1#":
                     position.set("sensor1State", Integer.parseInt(data[i]));
                     break;
diff --git a/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java b/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
index aae764993..042518cb2 100644
--- a/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
@@ -77,9 +77,10 @@ public class StartekProtocolDecoder extends BaseProtocolDecoder {
             .text(",")
             .number("d,")                        // extended
             .expression("([^,]+)?,")             // fuel
-            .expression("([^,]+)?")              // temperature
+            .expression("([^,]+)?,?")            // temperature
             .groupEnd("?")
             .groupEnd("?")
+            .any()
             .compile();
 
     private String decodeAlarm(int value) {
@@ -168,8 +169,12 @@ public class StartekProtocolDecoder extends BaseProtocolDecoder {
                 parser.nextInt(), parser.nextInt(), parser.nextHexInt(), parser.nextHexInt(), parser.nextInt())));
 
         position.set(Position.KEY_STATUS, parser.nextHexInt());
-        position.set(Position.KEY_INPUT, parser.nextHexInt());
-        position.set(Position.KEY_OUTPUT, parser.nextHexInt());
+
+        int input = parser.nextHexInt();
+        int output = parser.nextHexInt();
+        position.set(Position.KEY_IGNITION, BitUtil.check(input, 1));
+        position.set(Position.KEY_INPUT, input);
+        position.set(Position.KEY_OUTPUT, output);
 
         position.set(Position.KEY_POWER, parser.nextHexInt() * 0.01);
         position.set(Position.KEY_BATTERY, parser.nextHexInt() * 0.01);
diff --git a/src/main/java/org/traccar/protocol/StbProtocol.java b/src/main/java/org/traccar/protocol/StbProtocol.java
index ca95787d0..002ed86c7 100644
--- a/src/main/java/org/traccar/protocol/StbProtocol.java
+++ b/src/main/java/org/traccar/protocol/StbProtocol.java
@@ -27,7 +27,7 @@ public class StbProtocol extends BaseProtocol {
         addServer(new TrackerServer(false, getName()) {
             @Override
             protected void addProtocolHandlers(PipelineBuilder pipeline) {
-                pipeline.addLast(new StbFrameDecoder());
+                pipeline.addLast(new JsonFrameDecoder());
                 pipeline.addLast(new StringEncoder());
                 pipeline.addLast(new StringDecoder());
                 pipeline.addLast(new StbProtocolDecoder(StbProtocol.this));
diff --git a/src/main/java/org/traccar/protocol/StbProtocolDecoder.java b/src/main/java/org/traccar/protocol/StbProtocolDecoder.java
index bd151c604..cc985d605 100644
--- a/src/main/java/org/traccar/protocol/StbProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/StbProtocolDecoder.java
@@ -26,9 +26,7 @@ import org.traccar.Protocol;
 import org.traccar.model.Position;
 
 import javax.json.Json;
-import javax.json.JsonNumber;
 import javax.json.JsonObject;
-import javax.json.JsonString;
 import javax.json.JsonValue;
 import java.io.StringReader;
 import java.net.SocketAddress;
@@ -97,39 +95,34 @@ public class StbProtocolDecoder extends BaseProtocolDecoder {
                     String id = propertyObject.getString("id");
                     switch (id) {
                         case "01101001":
-                            locationType = propertyObject.getInt("value");
+                            locationType = Integer.parseInt(propertyObject.getString("value"));
                             break;
                         case "01102001":
-                            position.setLongitude(propertyObject.getJsonNumber("value").doubleValue());
+                            position.setLongitude(
+                                    Double.parseDouble(propertyObject.getString("value")));
                             break;
                         case "01103001":
-                            position.setLatitude(propertyObject.getJsonNumber("value").doubleValue());
+                            position.setLatitude(
+                                    Double.parseDouble(propertyObject.getString("value")));
                             break;
                         case "01118001":
-                            position.set(Position.KEY_DEVICE_TEMP, propertyObject.getJsonNumber("value").doubleValue());
+                            position.set(
+                                    Position.KEY_DEVICE_TEMP, Double.parseDouble(propertyObject.getString("value")));
                             break;
                         case "01122001":
-                            position.set("batteryControl", propertyObject.getInt("value"));
+                            position.set(
+                                    "batteryControl", Integer.parseInt(propertyObject.getString("value")));
                             break;
                         case "02301001":
-                            position.set("switchCabinetCommand", propertyObject.getInt("value"));
+                            position.set(
+                                    "switchCabinetCommand", Integer.parseInt(propertyObject.getString("value")));
                             break;
                         default:
                             String key = "id" + id;
                             if (propertyObject.containsKey("doorId")) {
                                 key += "Door" + propertyObject.getString("doorId");
                             }
-                            JsonValue value = propertyObject.get("value");
-                            switch (value.getValueType()) {
-                                case STRING:
-                                    position.set(key, ((JsonString) value).getString());
-                                    break;
-                                case NUMBER:
-                                    position.set(key, ((JsonNumber) value).doubleValue());
-                                    break;
-                                default:
-                                    break;
-                            }
+                            position.set(key, propertyObject.getString("value"));
                             break;
                     }
                 }
diff --git a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
index e13483449..21d23c24d 100644
--- a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2013 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -171,7 +171,7 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
             case 7:
                 return Position.ALARM_MOVEMENT;
             case 8:
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             default:
                 return null;
         }
@@ -188,7 +188,7 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
             case 14:
                 return Position.ALARM_LOW_BATTERY;
             case 15:
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
             case 16:
                 return Position.ALARM_ACCIDENT;
             case 40:
@@ -462,7 +462,7 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
 
         String type = values[index++];
 
-        if (!type.equals("STT") && !type.equals("ALT")) {
+        if (!type.equals("STT") && !type.equals("ALT") && !type.equals("BLE")) {
             return null;
         }
 
@@ -475,7 +475,12 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
         position.setDeviceId(deviceSession.getDeviceId());
         position.set(Position.KEY_TYPE, type);
 
-        int mask = Integer.parseInt(values[index++], 16);
+        int mask;
+        if (type.equals("BLE")) {
+            mask = 0b1100000110110;
+        } else {
+            mask = Integer.parseInt(values[index++], 16);
+        }
 
         if (BitUtil.check(mask, 1)) {
             index += 1; // model
@@ -524,63 +529,83 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
             position.setLongitude(Double.parseDouble(values[index++]));
         }
 
-        if (BitUtil.check(mask, 13)) {
-            position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[index++])));
-        }
+        if (type.equals("BLE")) {
 
-        if (BitUtil.check(mask, 14)) {
-            position.setCourse(Double.parseDouble(values[index++]));
-        }
+            position.setValid(true);
 
-        if (BitUtil.check(mask, 15)) {
-            position.set(Position.KEY_SATELLITES, Integer.parseInt(values[index++]));
-        }
+            int count = Integer.parseInt(values[index++]);
 
-        if (BitUtil.check(mask, 16)) {
-            position.setValid(values[index++].equals("1"));
-        }
+            for (int i = 1; i <= count; i++) {
+                position.set("tag" + i + "Rssi", Integer.parseInt(values[index++]));
+                index += 1; // rssi min
+                index += 1; // rssi max
+                position.set("tag" + i + "Id", values[index++]);
+                position.set("tag" + i + "Samples", Integer.parseInt(values[index++]));
+                position.set("tag" + i + "Major", Integer.parseInt(values[index++]));
+                position.set("tag" + i + "Minor", Integer.parseInt(values[index++]));
+            }
 
-        if (BitUtil.check(mask, 17)) {
-            position.set(Position.KEY_INPUT, Integer.parseInt(values[index++]));
-        }
+        } else {
 
-        if (BitUtil.check(mask, 18)) {
-            position.set(Position.KEY_OUTPUT, Integer.parseInt(values[index++]));
-        }
+            if (BitUtil.check(mask, 13)) {
+                position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[index++])));
+            }
 
-        if (type.equals("ALT")) {
-            if (BitUtil.check(mask, 19)) {
-                position.set("alertId", values[index++]);
+            if (BitUtil.check(mask, 14)) {
+                position.setCourse(Double.parseDouble(values[index++]));
             }
-            if (BitUtil.check(mask, 20)) {
-                position.set("alertModifier", values[index++]);
+
+            if (BitUtil.check(mask, 15)) {
+                position.set(Position.KEY_SATELLITES, Integer.parseInt(values[index++]));
             }
-            if (BitUtil.check(mask, 21)) {
-                position.set("alertData", values[index++]);
+
+            if (BitUtil.check(mask, 16)) {
+                position.setValid(values[index++].equals("1"));
             }
-        } else {
-            if (BitUtil.check(mask, 19)) {
-                position.set("mode", Integer.parseInt(values[index++]));
+
+            if (BitUtil.check(mask, 17)) {
+                position.set(Position.KEY_INPUT, Integer.parseInt(values[index++]));
             }
-            if (BitUtil.check(mask, 20)) {
-                position.set("reason", Integer.parseInt(values[index++]));
+
+            if (BitUtil.check(mask, 18)) {
+                position.set(Position.KEY_OUTPUT, Integer.parseInt(values[index++]));
             }
-            if (BitUtil.check(mask, 21)) {
-                position.set(Position.KEY_INDEX, Integer.parseInt(values[index++]));
+
+            if (type.equals("ALT")) {
+                if (BitUtil.check(mask, 19)) {
+                    position.set("alertId", values[index++]);
+                }
+                if (BitUtil.check(mask, 20)) {
+                    position.set("alertModifier", values[index++]);
+                }
+                if (BitUtil.check(mask, 21)) {
+                    position.set("alertData", values[index++]);
+                }
+            } else {
+                if (BitUtil.check(mask, 19)) {
+                    position.set("mode", Integer.parseInt(values[index++]));
+                }
+                if (BitUtil.check(mask, 20)) {
+                    position.set("reason", Integer.parseInt(values[index++]));
+                }
+                if (BitUtil.check(mask, 21)) {
+                    position.set(Position.KEY_INDEX, Integer.parseInt(values[index++]));
+                }
             }
-        }
 
-        if (BitUtil.check(mask, 22)) {
-            index += 1; // reserved
-        }
+            if (BitUtil.check(mask, 22)) {
+                index += 1; // reserved
+            }
 
-        if (BitUtil.check(mask, 23)) {
-            int assignMask = Integer.parseInt(values[index++], 16);
-            for (int i = 0; i <= 30; i++) {
-                if (BitUtil.check(assignMask, i)) {
-                    position.set(Position.PREFIX_IO + (i + 1), values[index++]);
+            if (BitUtil.check(mask, 23)) {
+                int assignMask = Integer.parseInt(values[index++], 16);
+                for (int i = 0; i <= 30; i++) {
+                    if (BitUtil.check(assignMask, i)) {
+                        position.set(Position.PREFIX_IO + (i + 1), values[index++]);
+                    }
                 }
             }
+
         }
 
         return position;
diff --git a/src/main/java/org/traccar/protocol/T800xProtocolDecoder.java b/src/main/java/org/traccar/protocol/T800xProtocolDecoder.java
index 72b277c8c..b15688df0 100644
--- a/src/main/java/org/traccar/protocol/T800xProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/T800xProtocolDecoder.java
@@ -58,6 +58,8 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_DRIVER_BEHAVIOR_1 = 0x05; // 0x2626
     public static final int MSG_DRIVER_BEHAVIOR_2 = 0x06; // 0x2626
     public static final int MSG_BLE = 0x10;
+    public static final int MSG_GPS_2 = 0x13;
+    public static final int MSG_ALARM_2 = 0x14;
     public static final int MSG_COMMAND = 0x81;
 
     private void sendResponse(Channel channel, short header, int type, int index, ByteBuf imei, int alarm) {
@@ -75,7 +77,7 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private String decodeAlarm(int value) {
+    private String decodeAlarm1(int value) {
         switch (value) {
             case 1:
                 return Position.ALARM_POWER_CUT;
@@ -105,6 +107,28 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
+    private String decodeAlarm2(int value) {
+        switch (value) {
+            case 1:
+            case 4:
+                return Position.ALARM_REMOVING;
+            case 2:
+                return Position.ALARM_TAMPERING;
+            case 3:
+                return Position.ALARM_SOS;
+            case 5:
+                return Position.ALARM_FALL_DOWN;
+            case 6:
+                return Position.ALARM_LOW_BATTERY;
+            case 14:
+                return Position.ALARM_GEOFENCE_ENTER;
+            case 15:
+                return Position.ALARM_GEOFENCE_EXIT;
+            default:
+                return null;
+        }
+    }
+
     private Date readDate(ByteBuf buf) {
         return new DateBuilder()
                 .setYear(BcdUtil.readInteger(buf, 2))
@@ -134,11 +158,12 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
             return null;
         }
 
-        if (type != MSG_GPS && type != MSG_ALARM) {
+        boolean positionType = type == MSG_GPS || type == MSG_GPS_2 || type == MSG_ALARM || type == MSG_ALARM_2;
+        if (!positionType) {
             sendResponse(channel, header, type, index, imei, 0);
         }
 
-        if (type == MSG_GPS || type == MSG_ALARM) {
+        if (positionType) {
 
             return decodePosition(channel, deviceSession, buf, type, index, imei);
 
@@ -229,6 +254,11 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
+    private double decodeBleTemp(ByteBuf buf) {
+        int value = buf.readUnsignedShort();
+        return (BitUtil.check(value, 15) ? -BitUtil.to(value, 15) : BitUtil.to(value, 15)) * 0.01;
+    }
+
     private Position decodeBle(
             Channel channel, DeviceSession deviceSession, ByteBuf buf, int type, int index, ByteBuf imei) {
 
@@ -278,7 +308,7 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
                     position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                     position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 2);
                     buf.readUnsignedByte(); // battery level
-                    position.set("tag" + i + "Temp", buf.readUnsignedShort() * 0.01);
+                    position.set("tag" + i + "Temp", decodeBleTemp(buf));
                     position.set("tag" + i + "Humidity", buf.readUnsignedShort() * 0.01);
                     position.set("tag" + i + "LightSensor", buf.readUnsignedShort());
                     position.set("tag" + i + "Rssi", buf.readUnsignedByte() - 128);
@@ -287,7 +317,7 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
                     position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                     position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 2);
                     buf.readUnsignedByte(); // battery level
-                    position.set("tag" + i + "Temp", buf.readUnsignedShort() * 0.01);
+                    position.set("tag" + i + "Temp", decodeBleTemp(buf));
                     position.set("tag" + i + "Door", buf.readUnsignedByte() > 0);
                     position.set("tag" + i + "Rssi", buf.readUnsignedByte() - 128);
                     break;
@@ -343,12 +373,19 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
             position.set("ac", BitUtil.check(io, 13));
             position.set(Position.PREFIX_IN + 3, BitUtil.check(io, 12));
             position.set(Position.PREFIX_IN + 4, BitUtil.check(io, 11));
-            position.set(Position.PREFIX_OUT + 1, BitUtil.check(io, 7));
-            position.set(Position.PREFIX_OUT + 2, BitUtil.check(io, 8));
-            position.set(Position.PREFIX_OUT + 3, BitUtil.check(io, 9));
+
+            if (type == MSG_GPS_2 || type == MSG_ALARM_2) {
+                position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());
+                buf.readUnsignedByte(); // reserved
+            } else {
+                position.set(Position.PREFIX_OUT + 1, BitUtil.check(io, 7));
+                position.set(Position.PREFIX_OUT + 2, BitUtil.check(io, 8));
+                position.set(Position.PREFIX_OUT + 3, BitUtil.check(io, 9));
+            }
 
             if (header != 0x2626) {
-                for (int i = 1; i <= 2; i++) {
+                int adcCount = type == MSG_GPS_2 || type == MSG_ALARM_2 ? 5 : 2;
+                for (int i = 1; i <= adcCount; i++) {
                     String value = ByteBufUtil.hexDump(buf.readSlice(2));
                     if (!value.equals("ffff")) {
                         position.set(Position.PREFIX_ADC + i, Integer.parseInt(value) * 0.01);
@@ -359,7 +396,7 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
         }
 
         int alarm = buf.readUnsignedByte();
-        position.set(Position.KEY_ALARM, decodeAlarm(alarm));
+        position.set(Position.KEY_ALARM, header != 0x2727 ? decodeAlarm1(alarm) : decodeAlarm2(alarm));
 
         if (header != 0x2727) {
 
@@ -473,7 +510,9 @@ public class T800xProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
-        sendResponse(channel, header, type, index, imei, alarm);
+        if (type == MSG_ALARM || type == MSG_ALARM_2) {
+            sendResponse(channel, header, type, index, imei, alarm);
+        }
 
         return position;
     }
diff --git a/src/main/java/org/traccar/protocol/TechtoCruzFrameDecoder.java b/src/main/java/org/traccar/protocol/TechtoCruzFrameDecoder.java
new file mode 100644
index 000000000..8b9152e8b
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/TechtoCruzFrameDecoder.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+
+import java.nio.charset.StandardCharsets;
+
+public class TechtoCruzFrameDecoder extends BaseFrameDecoder {
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        int lengthStart = buf.readerIndex() + 3;
+        int lengthEnd = buf.indexOf(lengthStart, buf.writerIndex(), (byte) ',');
+        if (lengthEnd > 0) {
+            int length = lengthStart
+                    + Integer.parseInt(buf.toString(lengthStart, lengthEnd - lengthStart, StandardCharsets.US_ASCII));
+            if (buf.readableBytes() >= length) {
+                return buf.readRetainedSlice(length);
+            }
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/TechtoCruzProtocol.java b/src/main/java/org/traccar/protocol/TechtoCruzProtocol.java
new file mode 100644
index 000000000..a217ea738
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/TechtoCruzProtocol.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class TechtoCruzProtocol extends BaseProtocol {
+
+    public TechtoCruzProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new TechtoCruzFrameDecoder());
+                pipeline.addLast(new StringEncoder());
+                pipeline.addLast(new StringDecoder());
+                pipeline.addLast(new TechtoCruzProtocolDecoder(TechtoCruzProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/TechtoCruzProtocolDecoder.java b/src/main/java/org/traccar/protocol/TechtoCruzProtocolDecoder.java
new file mode 100644
index 000000000..6b9f0edb6
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/TechtoCruzProtocolDecoder.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class TechtoCruzProtocolDecoder extends BaseProtocolDecoder {
+
+    public TechtoCruzProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$$A")
+            .number("d+,")                       // length
+            .number("(d+),")                     // imei
+            .number("(dd)(dd)(dd)")              // date (yymmdd)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .expression("([AV]),")               // valid
+            .expression("[^,]+,")                // manufacturer
+            .expression("([^,]+),")              // license plate
+            .number("(d+.d+),")                  // speed
+            .number("(d+),")                     // odometer
+            .number("(-?d+.d+),[NS],")           // latitude
+            .number("(-?d+.d+),[WE],")           // longitude
+            .number("(-?d+.d+),")                // altitude
+            .number("(d+.d+),")                  // course
+            .number("(d+),")                     // satellites
+            .number("(d+),")                     // rssi
+            .number("(d+.d+),")                  // power
+            .number("(d+.d+),")                  // battery
+            .number("([01]),")                   // charge
+            .number("[01],")                     // speed sensor
+            .number("[01],")                     // gps status
+            .number("([01]),")                   // ignition
+            .number("([01]),")                   // overspeed
+            .any()
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setTime(parser.nextDateTime());
+        position.setValid(parser.next().equals("A"));
+
+        position.set("registration", parser.next());
+
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+
+        position.set(Position.KEY_ODOMETER, parser.nextInt());
+
+        position.setLatitude(parser.nextDouble());
+        position.setLongitude(parser.nextDouble());
+        position.setAltitude(parser.nextDouble());
+        position.setCourse(parser.nextDouble());
+
+        position.set(Position.KEY_SATELLITES, parser.nextInt());
+        position.set(Position.KEY_RSSI, parser.nextInt());
+        position.set(Position.KEY_POWER, parser.nextDouble());
+        position.set(Position.KEY_BATTERY, parser.nextDouble());
+        position.set(Position.KEY_CHARGE, parser.nextInt() > 0);
+        position.set(Position.KEY_IGNITION, parser.nextInt() > 0);
+
+        if (parser.nextInt() > 0) {
+            position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
+        }
+
+        return position;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java b/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
index 6ba183f9b..89ae48b3a 100644
--- a/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
@@ -235,9 +235,6 @@ public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
             case 67:
                 position.set(Position.KEY_BATTERY, readValue(buf, length, false) * 0.001);
                 break;
-            case 69:
-                position.set("gpsStatus", readValue(buf, length, false));
-                break;
             case 72:
             case 73:
             case 74:
@@ -258,16 +255,6 @@ public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
             case 115:
                 position.set(Position.KEY_COOLANT_TEMP, readValue(buf, length, true) * 0.1);
                 break;
-            case 129:
-            case 130:
-            case 131:
-            case 132:
-            case 133:
-            case 134:
-                String driver = id == 129 || id == 132 ? "" : position.getString("driver1");
-                position.set("driver" + (id >= 132 ? 2 : 1),
-                        driver + buf.readSlice(length).toString(StandardCharsets.US_ASCII).trim());
-                break;
             case 179:
                 position.set(Position.PREFIX_OUT + 1, readValue(buf, length, false) == 1);
                 break;
@@ -312,11 +299,6 @@ public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
                         break;
                 }
                 break;
-            case 389:
-                if (BitUtil.between(readValue(buf, length, false), 4, 8) == 1) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_SOS);
-                }
-                break;
             default:
                 position.set(Position.PREFIX_IO + id, readValue(buf, length, false));
                 break;
diff --git a/src/main/java/org/traccar/protocol/TopinProtocol.java b/src/main/java/org/traccar/protocol/TopinProtocol.java
index 844dd7518..d28afbf94 100644
--- a/src/main/java/org/traccar/protocol/TopinProtocol.java
+++ b/src/main/java/org/traccar/protocol/TopinProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2019 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,13 +18,17 @@ package org.traccar.protocol;
 import org.traccar.BaseProtocol;
 import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
+import org.traccar.model.Command;
 
 public class TopinProtocol extends BaseProtocol {
 
     public TopinProtocol() {
+        setSupportedDataCommands(
+                Command.TYPE_SOS_NUMBER);
         addServer(new TrackerServer(false, getName()) {
             @Override
             protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new TopinProtocolEncoder(TopinProtocol.this));
                 pipeline.addLast(new TopinProtocolDecoder(TopinProtocol.this));
             }
         });
diff --git a/src/main/java/org/traccar/protocol/TopinProtocolDecoder.java b/src/main/java/org/traccar/protocol/TopinProtocolDecoder.java
index 87db95946..4fe261aa4 100644
--- a/src/main/java/org/traccar/protocol/TopinProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/TopinProtocolDecoder.java
@@ -50,7 +50,11 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_STATUS = 0x13;
     public static final int MSG_WIFI_OFFLINE = 0x17;
     public static final int MSG_TIME_UPDATE = 0x30;
+    public static final int MSG_SOS_NUMBER = 0x41;
     public static final int MSG_WIFI = 0x69;
+    public static final int MSG_VIBRATION_ON = 0x92;
+    public static final int MSG_VIBRATION_OFF = 0x93;
+    public static final int MSG_VIBRATION = 0x94;
 
     private void sendResponse(Channel channel, int length, int type, ByteBuf content) {
         if (channel != null) {
@@ -89,6 +93,19 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
         return negative ? -result : result;
     }
 
+    private String decodeAlarm(int alarms) {
+        if (BitUtil.check(alarms, 0)) {
+            return Position.ALARM_VIBRATION;
+        }
+        if (BitUtil.check(alarms, 1)) {
+            return Position.ALARM_OVERSPEED;
+        }
+        if (BitUtil.check(alarms, 4)) {
+            return Position.ALARM_LOW_POWER;
+        }
+        return null;
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -154,17 +171,7 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
 
             if (buf.readableBytes() >= 5) {
                 position.setAltitude(buf.readShort());
-
-                int alarms = buf.readUnsignedByte();
-                if (BitUtil.check(alarms, 0)) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION);
-                }
-                if (BitUtil.check(alarms, 1)) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
-                }
-                if (BitUtil.check(alarms, 4)) {
-                    position.set(Position.KEY_ALARM, Position.ALARM_LOW_POWER);
-                }
+                position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
             }
 
             ByteBuf content = Unpooled.buffer();
@@ -186,10 +193,12 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
 
             getLastLocation(position, null);
 
+            ByteBuf content = buf.retainedSlice(buf.readerIndex(), buf.readableBytes() - 2);
+
             position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
             position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
             buf.readUnsignedByte(); // timezone
-            int interval = buf.readUnsignedByte();
+            buf.readUnsignedByte(); // interval
             if (buf.readableBytes() >= 1 + 2) {
                 position.set(Position.KEY_RSSI, buf.readUnsignedByte());
             }
@@ -203,8 +212,6 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
                 position.set(Position.KEY_HEART_RATE, buf.readUnsignedByte());
             }
 
-            ByteBuf content = Unpooled.buffer();
-            content.writeByte(interval);
             sendResponse(channel, length, type, content);
 
             return position;
@@ -242,6 +249,10 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
                         mcc, mnc, buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedByte()));
             }
 
+            if (buf.readableBytes() > 2) {
+                position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
+            }
+
             position.setNetwork(network);
 
             ByteBuf content = Unpooled.buffer();
@@ -250,6 +261,17 @@ public class TopinProtocolDecoder extends BaseProtocolDecoder {
 
             return position;
 
+        } else if (type == MSG_VIBRATION) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            getLastLocation(position, null);
+
+            position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION);
+
+            return position;
+
         }
 
         return null;
diff --git a/src/main/java/org/traccar/protocol/TopinProtocolEncoder.java b/src/main/java/org/traccar/protocol/TopinProtocolEncoder.java
new file mode 100644
index 000000000..77f80b9d4
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/TopinProtocolEncoder.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.traccar.BaseProtocolEncoder;
+import org.traccar.Protocol;
+import org.traccar.model.Command;
+
+import java.nio.charset.StandardCharsets;
+
+public class TopinProtocolEncoder extends BaseProtocolEncoder {
+
+    public TopinProtocolEncoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private ByteBuf encodeContent(int type, ByteBuf content) {
+
+        ByteBuf buf = Unpooled.buffer();
+
+        buf.writeByte(0x78);
+        buf.writeByte(0x78);
+
+        buf.writeByte(1 + content.readableBytes()); // message length
+
+        buf.writeByte(type);
+
+        buf.writeBytes(content);
+        content.release();
+
+        buf.writeByte('\r');
+        buf.writeByte('\n');
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+
+        ByteBuf content = Unpooled.buffer();
+
+        switch (command.getType()) {
+            case Command.TYPE_SOS_NUMBER:
+                content.writeCharSequence(command.getString(Command.KEY_PHONE), StandardCharsets.US_ASCII);
+                return encodeContent(TopinProtocolDecoder.MSG_SOS_NUMBER, content);
+            default:
+                return null;
+        }
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/TotemProtocolDecoder.java b/src/main/java/org/traccar/protocol/TotemProtocolDecoder.java
index b5398116d..58c66031e 100644
--- a/src/main/java/org/traccar/protocol/TotemProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/TotemProtocolDecoder.java
@@ -227,8 +227,22 @@ public class TotemProtocolDecoder extends BaseProtocolDecoder {
                 return Position.ALARM_GEOFENCE_EXIT;
             case 0x05:
                 return Position.ALARM_GEOFENCE_ENTER;
+            case 0x06:
+                return Position.ALARM_TOW;
+            case 0x07:
+                return Position.ALARM_GPS_ANTENNA_CUT;
+            case 0x10:
+                return Position.ALARM_POWER_CUT;
+            case 0x11:
+                return Position.ALARM_POWER_RESTORED;
+            case 0x12:
+                return Position.ALARM_LOW_POWER;
+            case 0x13:
+                return Position.ALARM_LOW_BATTERY;
             case 0x40:
-                return Position.ALARM_SHOCK;
+                return Position.ALARM_VIBRATION;
+            case 0x41:
+                return Position.ALARM_IDLE;
             case 0x42:
                 return Position.ALARM_ACCELERATION;
             case 0x43:
@@ -357,16 +371,11 @@ public class TotemProtocolDecoder extends BaseProtocolDecoder {
         position.set(Position.KEY_CHARGE, BitUtil.check(status, 32 - 4));
         position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 5) ? Position.ALARM_GEOFENCE_EXIT : null);
         position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 6) ? Position.ALARM_GEOFENCE_ENTER : null);
+        position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 7) ? Position.ALARM_GPS_ANTENNA_CUT : null);
         position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 32 - 9));
         position.set(Position.PREFIX_OUT + 2, BitUtil.check(status, 32 - 10));
         position.set(Position.PREFIX_OUT + 3, BitUtil.check(status, 32 - 11));
-        position.set(Position.PREFIX_OUT + 4, BitUtil.check(status, 32 - 12));
-        position.set(Position.PREFIX_IN + 2, BitUtil.check(status, 32 - 13));
-        position.set(Position.PREFIX_IN + 3, BitUtil.check(status, 32 - 14));
-        position.set(Position.PREFIX_IN + 4, BitUtil.check(status, 32 - 15));
-        position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 16) ? Position.ALARM_SHOCK : null);
-        position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 18) ? Position.ALARM_LOW_BATTERY : null);
-        position.set(Position.KEY_ALARM, BitUtil.check(status, 32 - 22) ? Position.ALARM_JAMMING : null);
+        position.set(Position.KEY_STATUS, status); // see https://github.com/traccar/traccar/pull/4762
 
         position.setTime(parser.nextDateTime());
 
@@ -461,10 +470,8 @@ public class TotemProtocolDecoder extends BaseProtocolDecoder {
 
         Position position = new Position(getProtocolName());
 
-        String type = null;
         if (pattern == PATTERN4) {
-            type = parser.next();
-            position.set(Position.KEY_ALARM, decodeAlarm4(Integer.parseInt(type, 16)));
+            position.set(Position.KEY_ALARM, decodeAlarm4(parser.nextHexInt()));
         }
 
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
@@ -485,8 +492,8 @@ public class TotemProtocolDecoder extends BaseProtocolDecoder {
         }
 
         if (channel != null) {
-            if (type != null) {
-                String response = "$$0014" + type + sentence.substring(sentence.length() - 6, sentence.length() - 2);
+            if (pattern == PATTERN4) {
+                String response = "$$0014AA" + sentence.substring(sentence.length() - 6, sentence.length() - 2);
                 response += String.format("%02X", Checksum.xor(response)).toUpperCase();
                 channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
             } else {
diff --git a/src/main/java/org/traccar/protocol/TzoneProtocolDecoder.java b/src/main/java/org/traccar/protocol/TzoneProtocolDecoder.java
index 4f6854098..819c42471 100644
--- a/src/main/java/org/traccar/protocol/TzoneProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/TzoneProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,10 +17,15 @@ package org.traccar.protocol;
 
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.Context;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
+import org.traccar.config.Keys;
+import org.traccar.helper.BcdUtil;
 import org.traccar.helper.BitUtil;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.UnitsConverter;
@@ -29,6 +34,11 @@ import org.traccar.model.Network;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.TimeZone;
 
 public class TzoneProtocolDecoder extends BaseProtocolDecoder {
 
@@ -36,6 +46,20 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
+    private void sendResponse(Channel channel, SocketAddress remoteAddress, int index) {
+        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+
+        String ack = String.format("@ACK,%d#", index);
+        String time = String.format("@UTC time:%s", dateFormat.format(new Date()));
+
+        ByteBuf response = Unpooled.copiedBuffer(ack + time, StandardCharsets.US_ASCII);
+
+        if (channel != null) {
+            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+        }
+    }
+
     private String decodeAlarm(Short value) {
         switch (value) {
             case 0x01:
@@ -256,9 +280,28 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
         int blockLength = buf.readUnsignedShort();
         int blockEnd = buf.readerIndex() + blockLength;
 
-        if (blockLength > 0 && (hardware == 0x10A || hardware == 0x10B || hardware == 0x406)) {
-            position.setNetwork(new Network(
-                    CellTower.fromLacCid(buf.readUnsignedShort(), buf.readUnsignedShort())));
+        if (blockLength > 0) {
+            if (hardware == 0x10A || hardware == 0x10B || hardware == 0x406) {
+
+                position.setNetwork(new Network(
+                        CellTower.fromLacCid(buf.readUnsignedShort(), buf.readUnsignedShort())));
+
+            } else if (hardware == 0x407) {
+
+                Network network = new Network();
+                int count = buf.readUnsignedByte();
+                for (int i = 0; i < count; i++) {
+                    buf.readUnsignedByte(); // signal information
+
+                    int mcc = BcdUtil.readInteger(buf, 4);
+                    int mnc = BcdUtil.readInteger(buf, 4) % 1000;
+
+                    network.addCellTower(CellTower.from(
+                            mcc, mnc, buf.readUnsignedShort(), buf.readUnsignedInt()));
+                }
+                position.setNetwork(network);
+
+            }
         }
 
         buf.readerIndex(blockEnd);
@@ -268,25 +311,41 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
         blockLength = buf.readUnsignedShort();
         blockEnd = buf.readerIndex() + blockLength;
 
-        if (blockLength >= 13) {
+        if (hardware == 0x407 || blockLength >= 13) {
             position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
             position.set("terminalInfo", buf.readUnsignedByte());
 
-            int status = buf.readUnsignedByte();
-            position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 0));
-            position.set(Position.PREFIX_OUT + 2, BitUtil.check(status, 1));
-            status = buf.readUnsignedByte();
-            position.set(Position.PREFIX_IN + 1, BitUtil.check(status, 4));
-            if (BitUtil.check(status, 0)) {
-                position.set(Position.KEY_ALARM, Position.ALARM_SOS);
+            if (hardware != 0x407) {
+                int status = buf.readUnsignedByte();
+                position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 0));
+                position.set(Position.PREFIX_OUT + 2, BitUtil.check(status, 1));
+                status = buf.readUnsignedByte();
+                position.set(Position.PREFIX_IN + 1, BitUtil.check(status, 4));
+                if (BitUtil.check(status, 0)) {
+                    position.set(Position.KEY_ALARM, Position.ALARM_SOS);
+                }
             }
 
             position.set(Position.KEY_RSSI, buf.readUnsignedByte());
             position.set("gsmStatus", buf.readUnsignedByte());
-            position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
-            position.set(Position.KEY_POWER, buf.readUnsignedShort());
-            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
-            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
+            position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
+
+            if (hardware != 0x407) {
+                position.set(Position.KEY_POWER, buf.readUnsignedShort());
+                position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
+                position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
+            } else {
+                int temperature = buf.readUnsignedShort();
+                if (!BitUtil.check(temperature, 15)) {
+                    double value = BitUtil.to(temperature, 14) * 0.1;
+                    position.set(Position.PREFIX_TEMP + 1, BitUtil.check(temperature, 14) ? -value : value);
+                }
+                int humidity = buf.readUnsignedShort();
+                if (!BitUtil.check(humidity, 15)) {
+                    position.set("humidity", BitUtil.to(humidity, 15) * 0.1);
+                }
+                position.set("lightSensor", buf.readUnsignedByte() == 0);
+            }
         }
 
         if (blockLength >= 15) {
@@ -312,6 +371,10 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
 
         }
 
+        if (Context.getConfig().getBoolean(Keys.PROTOCOL_ACK.withPrefix(getProtocolName()))) {
+            sendResponse(channel, remoteAddress, buf.getUnsignedShort(buf.writerIndex() - 6));
+        }
+
         return position;
     }
 
diff --git a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
index a6b89dde4..4990cfd65 100644
--- a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
@@ -143,8 +143,8 @@ public class WatchProtocolDecoder extends BaseProtocolDecoder {
 
         int cellCount = Integer.parseInt(values[index++]);
         index += 1; // timing advance
-        int mcc = Integer.parseInt(values[index++]);
-        int mnc = Integer.parseInt(values[index++]);
+        int mcc = !values[index].isEmpty() ? Integer.parseInt(values[index++]) : 0;
+        int mnc = !values[index].isEmpty() ? Integer.parseInt(values[index++]) : 0;
 
         for (int i = 0; i < cellCount; i++) {
             network.addCellTower(CellTower.from(mcc, mnc,
diff --git a/src/main/java/org/traccar/protocol/Xexun2FrameDecoder.java b/src/main/java/org/traccar/protocol/Xexun2FrameDecoder.java
new file mode 100644
index 000000000..521d0209c
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Xexun2FrameDecoder.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+import org.traccar.helper.BufferUtil;
+
+public class Xexun2FrameDecoder extends BaseFrameDecoder {
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        if (buf.readableBytes() < 5) {
+            return null;
+        }
+
+        ByteBuf flag = Unpooled.wrappedBuffer(new byte[] {(byte) 0xfa, (byte) 0xaf});
+        int index;
+        try {
+            index = BufferUtil.indexOf(flag, buf, buf.readerIndex() + 2, buf.writerIndex());
+        } finally {
+            flag.release();
+        }
+
+        if (index >= 0) {
+            ByteBuf result = Unpooled.buffer(index + 2 - buf.readerIndex());
+
+            while (buf.readerIndex() < index + 2) {
+                int b = buf.readUnsignedByte();
+                if (b == 0xfb && buf.isReadable() && buf.getUnsignedByte(buf.readerIndex()) == 0xbf) {
+                    buf.readUnsignedByte(); // skip
+                    int ext = buf.readUnsignedByte();
+                    if (ext == 0x01) {
+                        result.writeByte(0xfa);
+                        result.writeByte(0xaf);
+                    } else if (ext == 0x02) {
+                        result.writeByte(0xfb);
+                        result.writeByte(0xbf);
+                    }
+                } else {
+                    result.writeByte(b);
+                }
+            }
+
+            return result;
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/Xexun2Protocol.java b/src/main/java/org/traccar/protocol/Xexun2Protocol.java
new file mode 100644
index 000000000..265841c77
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Xexun2Protocol.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class Xexun2Protocol extends BaseProtocol {
+
+    public Xexun2Protocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new Xexun2FrameDecoder());
+                pipeline.addLast(new Xexun2ProtocolDecoder(Xexun2Protocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java
new file mode 100644
index 000000000..766a3f05b
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java
@@ -0,0 +1,205 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+import org.traccar.model.WifiAccessPoint;
+
+import java.net.SocketAddress;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class Xexun2ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Xexun2ProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_POSITION = 0x14;
+
+    private void sendResponse(Channel channel, int type, int index, ByteBuf imei) {
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer();
+            response.writeByte(0xfa);
+            response.writeByte(0xaf);
+
+            response.writeShort(type);
+            response.writeShort(index);
+            response.writeBytes(imei);
+            response.writeShort(1); // attributes / length
+            response.writeShort(0xfffe); // checksum
+            response.writeByte(1); // response
+
+            response.writeByte(0xfa);
+            response.writeByte(0xaf);
+
+            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+        }
+    }
+
+    private String decodeAlarm(long value) {
+        if (BitUtil.check(value, 0)) {
+            return Position.ALARM_SOS;
+        }
+        if (BitUtil.check(value, 15)) {
+            return Position.ALARM_FALL_DOWN;
+        }
+        return null;
+    }
+
+    private double convertCoordinate(double value) {
+        double degrees = Math.floor(value / 100);
+        double minutes = value - degrees * 100;
+        return degrees + minutes / 60;
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.skipBytes(2); // flag
+        int type = buf.readUnsignedShort();
+        int index = buf.readUnsignedShort();
+
+        ByteBuf imei = buf.readSlice(8);
+        DeviceSession deviceSession = getDeviceSession(
+                channel, remoteAddress, ByteBufUtil.hexDump(imei).substring(0, 15));
+        if (deviceSession == null) {
+            return null;
+        }
+
+        sendResponse(channel, type, index, imei);
+
+        buf.readUnsignedShort(); // attributes
+        buf.readUnsignedShort(); // checksum
+
+        if (type == MSG_POSITION) {
+            List<Integer> lengths = new ArrayList<>();
+            List<Position> positions = new ArrayList<>();
+
+            int count = buf.readUnsignedByte();
+            for (int i = 0; i < count; i++) {
+                lengths.add(buf.readUnsignedShort());
+            }
+
+            for (int i = 0; i < count; i++) {
+                int endIndex = buf.readerIndex() + lengths.get(i);
+
+                Position position = new Position(getProtocolName());
+                position.setDeviceId(deviceSession.getDeviceId());
+
+                position.set(Position.KEY_INDEX, buf.readUnsignedByte());
+
+                position.setDeviceTime(new Date(buf.readUnsignedInt() * 1000));
+
+                position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+
+                int battery = buf.readUnsignedShort();
+                position.set(Position.KEY_CHARGE, BitUtil.check(battery, 15));
+                position.set(Position.KEY_BATTERY_LEVEL, BitUtil.to(battery, 15));
+
+                int mask = buf.readUnsignedByte();
+
+                if (BitUtil.check(mask, 0)) {
+                    position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedInt()));
+                }
+                if (BitUtil.check(mask, 1)) {
+                    int positionMask = buf.readUnsignedByte();
+                    if (BitUtil.check(positionMask, 0)) {
+                        position.setValid(true);
+                        position.setFixTime(position.getDeviceTime());
+                        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+                        position.setLongitude(convertCoordinate(buf.readFloat()));
+                        position.setLatitude(convertCoordinate(buf.readFloat()));
+                    }
+                    Network network = new Network();
+                    if (BitUtil.check(positionMask, 1)) {
+                        int wifiCount = buf.readUnsignedByte();
+                        for (int j = 0; j < wifiCount; j++) {
+                            String mac = ByteBufUtil.hexDump(buf.readSlice(6)).replaceAll("(..)", "$1:");
+                            network.addWifiAccessPoint(WifiAccessPoint.from(
+                                    mac.substring(0, mac.length() - 1), buf.readUnsignedByte()));
+                        }
+                    }
+                    if (BitUtil.check(positionMask, 2)) {
+                        int cellCount = buf.readUnsignedByte();
+                        for (int j = 0; j < cellCount; j++) {
+                            network.addCellTower(CellTower.from(
+                                    buf.readUnsignedShort(), buf.readUnsignedShort(),
+                                    buf.readInt(), buf.readUnsignedInt(), buf.readUnsignedByte()));
+                        }
+                    }
+                    if (network.getWifiAccessPoints() != null || network.getCellTowers() != null) {
+                        position.setNetwork(network);
+                    }
+                    if (BitUtil.check(positionMask, 3)) {
+                        buf.skipBytes(12 * buf.readUnsignedByte()); // tof
+                    }
+                    if (BitUtil.check(positionMask, 5)) {
+                        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1));
+                        position.setCourse(buf.readUnsignedShort() * 0.1);
+                    }
+                    if (BitUtil.check(positionMask, 6)) {
+                        position.setValid(true);
+                        position.setFixTime(position.getDeviceTime());
+                        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+                        position.setLongitude(convertCoordinate(buf.readDouble()));
+                        position.setLatitude(convertCoordinate(buf.readDouble()));
+
+                    }
+                }
+                if (BitUtil.check(mask, 3)) {
+                    buf.readUnsignedInt(); // fingerprint
+                }
+                if (BitUtil.check(mask, 4)) {
+                    buf.skipBytes(20); // version
+                    buf.skipBytes(8); // imsi
+                    buf.skipBytes(10); // iccid
+                }
+                if (BitUtil.check(mask, 5)) {
+                    buf.skipBytes(12); // device parameters
+                }
+
+                if (!position.getValid()) {
+                    getLastLocation(position, position.getDeviceTime());
+                }
+                positions.add(position);
+
+                buf.readerIndex(endIndex);
+            }
+
+            return positions;
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/test/java/org/traccar/geocoder/GeocoderTest.java b/src/test/java/org/traccar/geocoder/GeocoderTest.java
index 5f1748984..380980d2b 100644
--- a/src/test/java/org/traccar/geocoder/GeocoderTest.java
+++ b/src/test/java/org/traccar/geocoder/GeocoderTest.java
@@ -101,4 +101,13 @@ public class GeocoderTest {
         String address = geocoder.getAddress(40.733, -73.989, null);
         assertEquals("120 East 13th Street, New York, New York 10003, United States", address);
     }
+
+    @Ignore
+    @Test
+    public void testMapTiler() {
+        Geocoder geocoder = new MapTilerGeocoder("mnbnwLErpdspq13f0kC6", 0, new AddressFormat());
+        String address = geocoder.getAddress(40.733, -73.989, null);
+        assertEquals("East 13th Street, New York City, New York, United States", address);
+    }
+
 }
diff --git a/src/test/java/org/traccar/protocol/B2316ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/B2316ProtocolDecoderTest.java
new file mode 100644
index 000000000..6b9c71b0e
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/B2316ProtocolDecoderTest.java
@@ -0,0 +1,18 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class B2316ProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new B2316ProtocolDecoder(null);
+
+        verifyPositions(decoder, false, text(
+                "{\"imei\":\"866349041783600\",\"data\":[{\"tm\":1631162952,\"wn\":7},{\"tm\":1631158729,\"ic\":\"89883030000059398609\",\"ve\":\"B2316.TAU.U.TH01\"},{\"tm\":1631158805,\"te\":\"312,363\",\"st\":0,\"ba\":3,\"sn\":80},{\"tm\":1631158829,\"ci\":\"505,1,8218,133179149,-108\"},{\"tm\":1631162956,\"wi\":\"101331c17f4f,-74;f46bef7953bb,-81;b09575cff1c8,-86;e2b9e5d61a7a,-88;b0ee7b4dee2f,-88;e0b9e5d61a77,-89;f66bef7953b9,-89;\",\"te\":\"335,366\",\"hr\":58,\"bp\":\"113,73\",\"st\":0,\"ba\":3,\"sn\":60},{\"tm\":1631162968,\"ci\":\"505,1,8218,133179149,-105\"}]}"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/DmtHttpProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/DmtHttpProtocolDecoderTest.java
index 634e37b89..31d0efa12 100644
--- a/src/test/java/org/traccar/protocol/DmtHttpProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/DmtHttpProtocolDecoderTest.java
@@ -11,6 +11,18 @@ public class DmtHttpProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new DmtHttpProtocolDecoder(null);
 
+        verifyAttributes(decoder, request(HttpMethod.POST, "/",
+                buffer("{\"date\":\"2021-12-12T16:04:52Z\",\"device\":{\"sn\":\"416581\",\"prod\":85,\"rev\":1,\"fw\":\"1.12\",\"iccid\":\"89011702278612797427\",\"imei\":\"351358810439486\"},\"sqn\":1549,\"reason\":42,\"counters\":[{\"id\":0,\"val\":5304},{\"id\":3,\"val\":3200},{\"id\":4,\"val\":5066},{\"id\":128,\"val\":1},{\"id\":129,\"val\":8},{\"id\":130,\"val\":0},{\"id\":131,\"val\":0},{\"id\":132,\"val\":0},{\"id\":134,\"val\":1},{\"id\":138,\"val\":0},{\"id\":139,\"val\":36},{\"id\":142,\"val\":1629023},{\"id\":145,\"val\":0},{\"id\":146,\"val\":1}]}")));
+
+        verifyAttributes(decoder, request(HttpMethod.POST, "/",
+                buffer("{\"date\":\"2021-10-04T18:15:47Z\",\"device\":{\"sn\":\"403809\",\"prod\":85,\"rev\":1,\"fw\":\"1.12\",\"iccid\":\"89011702278483601922\",\"imei\":\"352656106127312\"},\"sqn\":40927,\"reason\":11,\"analogues\":[{\"id\":1,\"val\":4265},{\"id\":3,\"val\":3800},{\"id\":4,\"val\":12},{\"id\":5,\"val\":4251}],\"inputs\":1,\"outputs\":0,\"status\":137}")));
+
+        verifyPosition(decoder, request(HttpMethod.POST, "/",
+                buffer("{\"date\":\"2021-10-04T18:14:55Z\",\"device\":{\"sn\":\"403809\",\"prod\":85,\"rev\":1,\"fw\":\"1.12\",\"iccid\":\"89011702278483601922\",\"imei\":\"352656106127312\"},\"sqn\":40925,\"reason\":1,\"lat\":26.87366,\"lng\":-80.10618,\"posAcc\":47.7,\"posInfo\":{\"GDOP\":4.68,\"BSat\":2,\"GSat\":4,\"Src\":1},\"analogues\":[{\"id\":1,\"val\":4265},{\"id\":3,\"val\":3800},{\"id\":4,\"val\":16},{\"id\":5,\"val\":4255}],\"inputs\":1,\"outputs\":0,\"status\":137}")));
+
+        verifyPosition(decoder, request(HttpMethod.POST, "/",
+                buffer("{ \"date\": \"2021-04-20T11:10:03.702659861Z\", \"device\":{ \"sn\": \"0016C001F000ABEC\", \"prod\": 0.2, \"rev\": 0.3, \"fw\": \"1.1\", \"module\": \"LR 34.3.3\", \"iccid\": \"89610180000000000000\", \"imei\": \"354043000000000\" }, \"sqn\": 347263802, \"reason\":3, \"lat\": 1.1, \"lng\": 2.2, \"posAcc\": 30.1, \"posInfo\":{ \"HDOP\": 0.1, \"PDOP\": 0.2, \"GDOP\": 0.3, \"BSat\":1, \"GSat\":2, \"Src\":2 }, \"analogues\":[{ \"id\":1, \"val\": 300 },{ \"id\":2, \"val\": 500} ], \"inputs\": 5001, \"outputs\":0, \"status\": 17, \"counters\":[{ \"id\": 11, \"val\": 43 },{ \"id\": 23, \"val\": 8800} ], \"lora\":{ \"dev_id\": \"yabby-abec\", \"app_id\": \"digital-matter\", \"dev_addr\": \"260B567A\", \"gw\": [ { \"id\": \"dm-sentrius\", \"snr\": 10, \"rssi\": -36 } ] }}")));
+
         verifyPositions(decoder, request(HttpMethod.POST, "/",
                 buffer("{\"SerNo\":131693,\"IMEI\":\"356692063643328\",\"ICCID\":\"8944538523010771676\",\"ProdId\":33,\"FW\":\"33.4.1.27\",\"Records\":[{\"SeqNo\":125,\"Reason\":11,\"DateUTC\":\"2017-05-11 05:58:44\",\"Fields\":[{\"GpsUTC\":\"2017-05-08 18:04:57\",\"Lat\":43.7370138,\"Long\":-79.3462607,\"Alt\":197,\"Spd\":0,\"SpdAcc\":13,\"Head\":66,\"PDOP\":18,\"PosAcc\":37,\"GpsStat\":7,\"FType\":0},{\"DIn\":2,\"DOut\":0,\"DevStat\":2,\"FType\":2},{\"AnalogueData\":{\"1\":14641,\"3\":2484,\"4\":26,\"5\":10868},\"FType\":6},{\"AnalogueData\":{\"11\":34,\"12\":0,\"13\":309,\"14\":9921,\"15\":3},\"FType\":7}]},{\"SeqNo\":128,\"Reason\":11,\"DateUTC\":\"2017-05-11 17:59:45\",\"Fields\":[{\"GpsUTC\":\"2017-05-08 18:04:57\",\"Lat\":43.7370138,\"Long\":-79.3462607,\"Alt\":197,\"Spd\":0,\"SpdAcc\":13,\"Head\":66,\"PDOP\":18,\"PosAcc\":37,\"GpsStat\":7,\"FType\":0},{\"DIn\":2,\"DOut\":0,\"DevStat\":2,\"FType\":2},{\"AnalogueData\":{\"1\":14607,\"3\":2752,\"4\":26,\"5\":11062},\"FType\":6},{\"AnalogueData\":{\"11\":34,\"12\":1,\"13\":325,\"14\":10881,\"15\":3},\"FType\":7}]},{\"SeqNo\":130,\"Reason\":9,\"DateUTC\":\"2017-05-11 19:30:03\",\"Fields\":[{\"GpsUTC\":\"2017-05-08 18:04:57\",\"Lat\":43.7370138,\"Long\":-79.3462607,\"Alt\":197,\"Spd\":0,\"SpdAcc\":13,\"Head\":66,\"PDOP\":18,\"PosAcc\":37,\"GpsStat\":3,\"FType\":0},{\"DIn\":6,\"DOut\":0,\"DevStat\":2,\"FType\":2},{\"AnalogueData\":{\"1\":14599,\"3\":2731,\"4\":27,\"5\":10965},\"FType\":6},{\"AnalogueData\":{\"11\":34,\"12\":2,\"13\":329,\"14\":11121,\"15\":3},\"FType\":7}]},{\"SeqNo\":131,\"Reason\":11,\"DateUTC\":\"2017-05-11 19:32:03\",\"Fields\":[{\"GpsUTC\":\"2017-05-08 18:04:57\",\"Lat\":43.7370138,\"Long\":-79.3462607,\"Alt\":197,\"Spd\":0,\"SpdAcc\":13,\"Head\":66,\"PDOP\":18,\"PosAcc\":37,\"GpsStat\":7,\"FType\":0},{\"DIn\":6,\"DOut\":0,\"DevStat\":2,\"FType\":2},{\"AnalogueData\":{\"1\":14403,\"3\":2783,\"4\":27,\"5\":10965},\"FType\":6},{\"AnalogueData\":{\"11\":34,\"12\":2,\"13\":330,\"14\":11181,\"15\":3},\"FType\":7}]},{\"SeqNo\":133,\"Reason\":11,\"DateUTC\":\"2017-05-11 19:36:15\",\"Fields\":[{\"GpsUTC\":\"2017-05-08 18:04:57\",\"Lat\":43.7370138,\"Long\":-79.3462607,\"Alt\":197,\"Spd\":0,\"SpdAcc\":13,\"Head\":66,\"PDOP\":18,\"PosAcc\":37,\"GpsStat\":7,\"FType\":0},{\"DIn\":6,\"DOut\":0,\"DevStat\":2,\"FType\":2},{\"AnalogueData\":{\"1\":14319,\"3\":2898,\"4\":23,\"5\":10965},\"FType\":6},{\"AnalogueData\":{\"11\":34,\"12\":3,\"13\":331,\"14\":11241,\"15\":3},\"FType\":7}]}]}")));
 
diff --git a/src/test/java/org/traccar/protocol/Dsf22FrameDecoderTest.java b/src/test/java/org/traccar/protocol/Dsf22FrameDecoderTest.java
new file mode 100644
index 000000000..fc18b0560
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/Dsf22FrameDecoderTest.java
@@ -0,0 +1,23 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class Dsf22FrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new Dsf22FrameDecoder();
+
+        verifyFrame(
+                binary("4642000101A8EE5F0ECA5FF421B33F524E32610401"),
+                decoder.decode(null, null, binary("4642000101A8EE5F0ECA5FF421B33F524E32610401")));
+
+        verifyFrame(
+                binary("4642000103A8EE5F0ECA5FF421B33F524E326104010216600EFC92F421B63F524E366104013238600E1EBEF421B93F524E35610401"),
+                decoder.decode(null, null, binary("4642000103A8EE5F0ECA5FF421B33F524E326104010216600EFC92F421B63F524E366104013238600E1EBEF421B93F524E35610401")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/Dsf22ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Dsf22ProtocolDecoderTest.java
new file mode 100644
index 000000000..96cd78f03
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/Dsf22ProtocolDecoderTest.java
@@ -0,0 +1,23 @@
+package org.traccar.protocol;
+
+import org.junit.Ignore;
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+@Ignore
+public class Dsf22ProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new Dsf22ProtocolDecoder(null);
+
+        verifyPositions(decoder, binary(
+                "4642000101A8EE5F0ECA5FF421B33F524E32610401"));
+
+        verifyPositions(decoder, binary(
+                "4642000103A8EE5F0ECA5FF421B33F524E326104010216600EFC92F421B63F524E366104013238600E1EBEF421B93F524E35610401"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java b/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java
new file mode 100644
index 000000000..46f32a8ae
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java
@@ -0,0 +1,23 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class DualcamFrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new DualcamFrameDecoder();
+
+        verifyFrame(
+                binary("000000050001403a4abaa31444000400"),
+                decoder.decode(null, null, binary("000000050001403a4abaa31444000400")));
+
+        verifyFrame(
+                binary("00010006000000110000"),
+                decoder.decode(null, null, binary("00010006000000110000")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java
new file mode 100644
index 000000000..3dd11bdf7
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java
@@ -0,0 +1,27 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class DualcamProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new DualcamProtocolDecoder(null);
+
+        verifyNull(decoder, binary(
+                "000000050001403a4abaa31444000400"));
+
+        verifyNull(decoder, binary(
+                "00010006000000110000"));
+
+        verifyNull(decoder, binary(
+                "0003000400000001"));
+
+        verifyNull(decoder, binary(
+                "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"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/FifotrackProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/FifotrackProtocolDecoderTest.java
index fdac158dd..6480d1dc4 100644
--- a/src/test/java/org/traccar/protocol/FifotrackProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/FifotrackProtocolDecoderTest.java
@@ -11,6 +11,15 @@ public class FifotrackProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new FifotrackProtocolDecoder(null);
 
+        verifyPosition(decoder, buffer(
+                "$$95,866104023192332,1,A03,,210414055249,460|0|25FC|104C,4.18,100,000F,0,A,2,9,22.643175,114.018150*75"));
+
+        verifyAttributes(decoder, buffer(
+                "$$136,866104023192332,1,A03,,210414055249,460|0|25FC|104C,4.18,100,000F,1,94D9B377EB53:-60|EC6C9FA4CAD8:-55|CA50E9206252:-61|54E061260A89:-51*3E"));
+
+        verifyPosition(decoder, buffer(
+                "$$274,863003046499158,18D0,A01,,211026081639,A,13.934116,100.000463,0,263,16,366959,345180,80000040,02,0,520|0|FA8|1A9B5B9,9DE|141|2D,%  ^YENSABAICHAI$SONGKRAN$MR.^^?;6007643190300472637=150519870412=?+             14            1            0000155  00103                     ?,*69"));
+
         verifyAttribute(decoder, buffer(
                 "$$25,863003046473534,1,B03,OK*4D"),
                 Position.KEY_RESULT, "OK");
diff --git a/src/test/java/org/traccar/protocol/FlexApiProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/FlexApiProtocolDecoderTest.java
new file mode 100644
index 000000000..a276a01e9
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/FlexApiProtocolDecoderTest.java
@@ -0,0 +1,42 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class FlexApiProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new FlexApiProtocolDecoder(null);
+
+        verifyAttributes(decoder, text(
+                "${\"topic\":\"v1/VF3102021113001/gnss/info\",\"payload\":{\"gnss.ts\":1639713510,\"gnss.latitude\":30.587509,\"gnss.longitude\":104.053650,\"gnss.altitude\":391,\"gnss.speed\":0,\"gnss.heading\":0,\"gnss.hdop\":1.100000,\"gnss.fix\":4,\"gnss.num_sv\":10}}xx"));
+
+        verifyNull(decoder, text(
+                "${\"topic\":\"v1/VF3102021113001/cellular1/info\",\"payload\":{\"modem1.ts\":1639713510,\"modem1.imei\":\"863674047326655\",\"modem1.imsi\":\"\",\"modem1.iccid\":\"\",\"modem1.phone_num\":\"\",\"modem1.signal_lvl\":0,\"modem1.reg_status\":0,\"modem1.operator\":\"\",\"modem1.network\":0,\"modem1.lac\":\"\",\"modem1.cell_id\":\"\",\"modem1.rssi\":0,\"modem1.rsrp\":0,\"modem1.rsrq\":0,\"cellular1.status\":2,\"cellular1.ip\":\"0.0.0.0\",\"cellular1.netmask\":\"255.255.255.255\",\"cellular1.gateway\":\"0.0.0.0\",\"cellular1.dns1\":\"0.0.0.0\",\"cellular1.up_at\":602}}xx"));
+
+        verifyAttributes(decoder, text(
+                "${\"topic\":\"v1/VF3102029000003/obd/info\",\"payload\":{\"obd.ts\":1639037377,\"obd.speed\":211,\"obd.f_lvl\":50.196079,\"obd.mil\":0,\"obd.dtcs\":0,\"obd.rpm\":14531.250000,\"obd.e_load\":50.980392,\"obd.c_temp\":118,\"obd.o_temp\":56,\"obd.a_temp\":-40,\"obd.f_press\":48,\"obd.t_pos\":51.764706,\"obd.b_volt\":13.782000,\"obd.up_time\":2265,\"obd.m_dist\":4643,\"obd.m_time\":257,\"obd.d_dist\":200,\"obd.d_time\":771,\"obd.vin\":\"LFV3B28R8A3025310\",\"obd.f_rate\":10,\"obd.t_dist\":4843,\"obd.b_press\":101,\"obd.f_r_press\":48,\"obd.i_temp\":37,\"obd.i_press\":32,\"obd.r_torque\":4128,\"obd.a_torque\":2,\"obd.mf_mon\":1,\"obd.f_s_mon\":0,\"obd.c_c_mon\":0,\"obd.c_mon\":1,\"obd.e_s_mon\":1,\"obd.e_v_s_mon\":1,\"obd.o_s_mon\":1,\"obd.o_s_h_mon\":1}}xx"));
+
+        verifyAttributes(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/obd/info\",\"payload\":{\"obd.ts\":1637225390,\"obd.speed\":0,\"obd.f_lvl\":null,\"obd.odo\":0,\"obd.e_hours\":0,\"obd.ab_level\":null,\"obd.mil\":0,\"obd.dtcs\":null,\"obd.rpm\":0,\"obd.e_load\":null,\"obd.c_temp\":-40,\"obd.o_temp\":-273,\"obd.a_temp\":null,\"obd.f_press\":null,\"obd.t_pos\":0,\"obd.b_volt\":null,\"obd.up_time\":null,\"obd.m_dist\":null,\"obd.m_time\":null,\"obd.d_dist\":null,\"obd.d_time\":null,\"obd.vin\":\"NLVIN123456789ABC\",\"obd.brake\":0,\"obd.parking\":0,\"obd.s_w_angle\":null,\"obd.f_rate\":0,\"obd.f_econ\":0,\"obd.a_pos\":null,\"obd.t_dist\":0,\"obd.b_press\":null,\"obd.f_r_press\":null,\"obd.i_temp\":null,\"obd.i_press\":null,\"obd.r_torque\":null,\"obd.f_torque\":null,\"obd.max_avl_torque\":null,\"obd.a_torque\":-125,\"obd.d_e_f_vol\":null,\"obd.mf_mon\":null,\"obd.f_s_mon\":null,\"obd.c_c_mon\":null,\"obd.c_mon\":null,\"obd.h_c_mon\":null,\"obd.e_s_mon\":null,\"obd.s_a_s_mon\":null,\"obd.a_s_r_mon\":null,\"obd.e_g_s_mon\":null,\"obd.e_g_s_h_mon\":null,\"obd.e_v_s_mon\":null,\"obd.c_s_a_s_mon\":null,\"obd.b_p_c_s_mon\":null,\"obd.dpf_mon\":null,\"obd.n_c_mon\":null,\"obd.nmhc_mon\":null,\"obd.o_s_mon\":null,\"obd.o_s_h_mon\":null,\"obd.pf_mon\":null}}xx"));
+
+        verifyPosition(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/gnss/info\",\"payload\":{\"time\":1637225390,\"lat\":30.587942,\"log\":104.053543,\"gnss.altitude\":480.399994,\"gnss.speed\":0,\"gnss.heading\":0,\"gnss.hdop\":0.900000,\"gnss.fix\":4,\"gnss.num_sv\":11}}xx"));
+
+        verifyNull(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/motion/info\",\"payload\":{\"motion.ts\":1637225450,\"motion.ax\":0.009272,\"motion.ay\":0.278404,\"motion.az\":-0.941596,\"motion.gx\":0.420000,\"motion.gy\":-0.490000,\"motion.gz\":0.140000}}xx"));
+
+        verifyNull(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/sysinfo/info\",\"payload\":{\"sysinfo.ts\":1637224740,\"sysinfo.model_name\":\"310\",\"sysinfo.oem_name\":\"inhand\",\"sysinfo.serial_number\":\"VF3102021111601\",\"sysinfo.firmware_version\":\"VT3_V1.1.32\",\"sysinfo.product_number\":\"FQ58\",\"sysinfo.description\":\"www.inhand.com.cn\"}}xx"));
+
+        verifyNull(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/io/info\",\"payload\":{\"io.ts\":1637227722,\"io.AI1\":0,\"io.DI1\":1,\"io.DI2\":0,\"io.DI3\":0,\"io.DI4\":0,\"io.DI1_pullup\":0,\"io.DI2_pullup\":0,\"io.DI3_pullup\":0,\"io.DI4_pullup\":0,\"io.DO1\":0,\"io.DO2\":0,\"io.DO3\":0,\"io.IGT\":1}}xx"));
+
+        verifyNull(decoder, text(
+                "${\"topic\":\"v1/VF3102021111601/cellular1/info\",\"payload\":{\"modem1.ts\":1637225330,\"modem1.imei\":\"863674047324999\",\"modem1.imsi\":\"460111150414721\",\"modem1.iccid\":\"89860319482086580401\",\"modem1.phone_num\":\"\",\"modem1.signal_lvl\":25,\"modem1.reg_status\":1,\"modem1.operator\":\"46011\",\"modem1.network\":3,\"modem1.lac\":\"EA00\",\"modem1.cell_id\":\"E779B81\",\"modem1.rssi\":0,\"modem1.rsrp\":0,\"modem1.rsrq\":0,\"cellular1.status\":3,\"cellular1.ip\":\"10.136.143.193\",\"cellular1.netmask\":\"255.255.255.255\",\"cellular1.gateway\":\"10.64.64.64\",\"cellular1.dns1\":\"223.5.5.5\",\"cellular1.up_at\":450}}xx"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/GoSafeProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/GoSafeProtocolDecoderTest.java
index 3ede9017f..bb79f4f25 100644
--- a/src/test/java/org/traccar/protocol/GoSafeProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/GoSafeProtocolDecoderTest.java
@@ -11,6 +11,9 @@ public class GoSafeProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new GoSafeProtocolDecoder(null);
 
+        verifyPositions(decoder, false, text(
+                "*GS06,357330050846344,RST#"));
+
         verifyAttribute(decoder, text(
                 "*GS06,356449068350122,013519070819,,SYS:G6S;V3.37;V1.1.8,GPS:A;12;N23.169866;E113.450728;0;255;54;0.79,COT:18779;,ADC:12.66;0.58,DTT:4084;E1;0;0;0;1,IWD:0;1;ad031652643fff28;23.2;1;1;86031652504fff28;24.3;2;1;e603165252a5ff28;24.2;3;1;bb0416557da6ff28;24.0#"),
                 Position.PREFIX_TEMP + 3, 24.0);
diff --git a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
index fd1eb3040..d2d090c04 100644
--- a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
@@ -17,6 +17,12 @@ public class Gt06ProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, binary(
                 "78780D01086471700328358100093F040D0A"));
 
+        verifyNotNull(decoder, binary(
+                "78782111150b0b022c30c804b7af7808810cb0003c00012e02d075df0084890c000679950d0a"));
+
+        verifyNotNull(decoder, binary(
+                "797900377000000001020035000103002c0004616219d00043000b013601048153931500001a0001000808652820400643521000000101004e46760d0a"));
+
         verifyNull(decoder, binary(
                 "7878171915061810051a01f90101700d08c8f50c0000065494ae0d0a"));
 
diff --git a/src/test/java/org/traccar/protocol/HoopoProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/HoopoProtocolDecoderTest.java
new file mode 100644
index 000000000..35d0f1423
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/HoopoProtocolDecoderTest.java
@@ -0,0 +1,18 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class HoopoProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new HoopoProtocolDecoder(null);
+
+        verifyPosition(decoder, text(
+                "{ \"deviceId\": \"BCCD0654\", \"assetName\": \"BCCD0654\", \"assetType\": \"???? ?????? - ??? 8\", \"eventData\": { \"latitude\": 31.97498, \"longitude\": 34.80802, \"locationName\": \"\", \"accuracyLevel\": \"High\", \"eventType\": \"Arrival\", \"batteryLevel\": 100, \"receiveTime\": \"2021-09-20T18:52:32Z\" }, \"eventTime\": \"2021-09-20T08:52:02Z\", \"serverReportTime\": \"0001-01-01T00:00:00Z\" }"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/HuaShengProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/HuaShengProtocolDecoderTest.java
index 51a5d18ae..74671b845 100644
--- a/src/test/java/org/traccar/protocol/HuaShengProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/HuaShengProtocolDecoderTest.java
@@ -12,6 +12,9 @@ public class HuaShengProtocolDecoderTest extends ProtocolTest {
         var decoder = new HuaShengProtocolDecoder(null);
 
         verifyNull(decoder, binary(
+                "c00000007eaa000000000000cb8000000032313130313030393238323800e9abafffd615d2000000000008000000010015ffffff0000000000000004e7ffffffffff0005000a10080001d5ab000900154b4e4142323531324d4b54353638363630000f00133335343434343131353130333138380014000b00000000000000c0"));
+
+        verifyNull(decoder, binary(
                 "c0010c003c0002000000000044020010a0014f42445f3347315f56322e320013a0043335353835353035313032303536360006a08700000006a0a105c9c0"));
 
         verifyNull(decoder, binary(
diff --git a/src/test/java/org/traccar/protocol/HuabaoProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/HuabaoProtocolDecoderTest.java
index 07442fbef..238799fac 100644
--- a/src/test/java/org/traccar/protocol/HuabaoProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/HuabaoProtocolDecoderTest.java
@@ -14,6 +14,19 @@ public class HuabaoProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, binary(
                 "7E01000021013345678906000F002C012F373031313142534A2D4D3742203030303030303001D4C1423838383838B47E"));
 
+        verifyAttribute(decoder, binary(
+                "7e0200008e01917159043700b300000000800000030158990606ca0fd7000400000000211129111705010400000000cc14383938363037423831303230393031363239363830010d8001aa81021388820200858301148401aa8502189b8601338702007e8801338901148a0200998b1131323334353637383941424344454647488c04000200a88d0200828e0114a00b50353338662c5530323966037e"),
+                Position.KEY_DTCS, "P538f U029f");
+
+        verifyPosition(decoder, binary(
+                "7E020000830191715904370A2E00000000800000030158991806CA0FEB00040000010D211108194050010400000003CC14383938363034373831303230373033313836303830011A8001AA810213888202007A8301148401AA8502189B8601338702007D028801338901148A0200998B1131323334353637383941424344454647488C04000200A88D0200828E0114A0002E7E"));
+
+        verifyPosition(decoder, binary(
+                "7e0200007c0191718447540dcd000000008000000b029eabc204ba78510004000000042111182321120104000017f6cc14383933303237323037303339333033383732373130011d800134810204718202008283010e84017b85021ae986012f870201788901038b114a4e31424a314352364b573333363533358c040008dcb68d02018c8e013da000c07e"));
+
+        verifyNotNull(decoder, binary(
+                "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"));
+
         verifyNotNull(decoder, binary(
                 "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"));
 
diff --git a/src/test/java/org/traccar/protocol/StbFrameDecoderTest.java b/src/test/java/org/traccar/protocol/JsonFrameDecoderTest.java
index 45d998fb1..42777e419 100644
--- a/src/test/java/org/traccar/protocol/StbFrameDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/JsonFrameDecoderTest.java
@@ -3,12 +3,12 @@ package org.traccar.protocol;
 import org.junit.Test;
 import org.traccar.ProtocolTest;
 
-public class StbFrameDecoderTest extends ProtocolTest {
+public class JsonFrameDecoderTest extends ProtocolTest {
 
     @Test
     public void testDecode() throws Exception {
 
-        var decoder = new StbFrameDecoder();
+        var decoder = new JsonFrameDecoder();
 
         verifyFrame(
                 binary("7b226465764964223a2243485a4430384b504430323130343235303436222c2264657654797065223a322c226861726456657273696f6e223a224844545456413139222c226d736754797065223a3131302c2270726f746f636f6c56657273696f6e223a225631222c22736f667456657273696f6e223a22332e312e38222c22737769746368436162537461747573223a2231222c2274786e4e6f223a2231363235323132373431353337227d"),
diff --git a/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java b/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java
index cd2d5b102..eda97ba2d 100644
--- a/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java
@@ -11,6 +11,10 @@ public class Jt600FrameDecoderTest extends ProtocolTest {
         var decoder = new Jt600FrameDecoder();
 
         verifyFrame(
+                binary("2480413009781914003406102107544354193631006213423b00000000006c070000000020e064f91ea0671d00020f0f0f0f0f0f0f0f0f0f07f100ea0f6e"),
+                decoder.decode(null, null, binary("2480413009781914003406102107544354193631006213423b00000000006c070000000020e064f91ea0671d00020f0f0f0f0f0f0f0f0f0f07f100ea0f6e")));
+
+        verifyFrame(
                 binary("2478905197081711003405101917164812492365028134847d0a1c000002640c0000000020c032759600731000000f0f0f0f0f0f0f0f0f0f000702850274"),
                 decoder.decode(null, null, binary("2478905197081711003405101917164812492365028134847d0a1c000002640c0000000020c032759600731000000f0f0f0f0f0f0f0f0f0f000702850274")));
 
diff --git a/src/test/java/org/traccar/protocol/Jt600ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Jt600ProtocolDecoderTest.java
index be384c0f1..3c681ec58 100644
--- a/src/test/java/org/traccar/protocol/Jt600ProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Jt600ProtocolDecoderTest.java
@@ -12,6 +12,9 @@ public class Jt600ProtocolDecoderTest extends ProtocolTest {
         var decoder = new Jt600ProtocolDecoder(null);
 
         verifyPositions(decoder, binary(
+                "2480413009781914003406102107544354193631006213423b00000000006c070000000020e064f91ea0671d00020f0f0f0f0f0f0f0f0f0f07f100ea0f6e"));
+
+        verifyPositions(decoder, binary(
                 "2478807035371711003419081920061851380856003256223b000000000000070000000020c0ff965d54de1800000f0f0f0f0f0f0f0f0f0f02d600ea0a21"));
 
         verifyPositions(decoder, binary(
diff --git a/src/test/java/org/traccar/protocol/MeitrackProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/MeitrackProtocolDecoderTest.java
index 3f0e5b2d3..58861c139 100644
--- a/src/test/java/org/traccar/protocol/MeitrackProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/MeitrackProtocolDecoderTest.java
@@ -11,6 +11,9 @@ public class MeitrackProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new MeitrackProtocolDecoder(null);
 
+        verifyPosition(decoder, buffer(
+                "$$D149,867047043162018,AAA,35,-1.264865,36.800705,211001105240,A,9,20,41.0,323,1,1697,1,0,000|00||,0000,4.33|12.96|1.92|2.72|2.69,0.000000|0|0.000000,*E1"));
+
         verifyPositions(decoder, binary(
                 "2424413132332c3836313538353034333230303836322c4343452c010000000100590015000305010609071b0b081c000939010a07000b1700199e011a9505921a0099c4089c5500c93e00405a000602a8b114000343f12e0604d18806270c654a2e000da20537009bb8963904010e0c0d020300aa7a0af69e0100002a35340d0a"));
 
diff --git a/src/test/java/org/traccar/protocol/MiniFinderProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/MiniFinderProtocolDecoderTest.java
index 2d7e4e597..1a9756226 100644
--- a/src/test/java/org/traccar/protocol/MiniFinderProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/MiniFinderProtocolDecoderTest.java
@@ -2,6 +2,7 @@ package org.traccar.protocol;
 
 import org.junit.Test;
 import org.traccar.ProtocolTest;
+import org.traccar.model.Position;
 
 public class MiniFinderProtocolDecoderTest extends ProtocolTest {
 
@@ -19,7 +20,11 @@ public class MiniFinderProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, text(
                 "!1,123456789012345"));
 
-        verifyNull(decoder, text(
+        verifyAttribute(decoder, text(
+                "!5,17,V,50"),
+                Position.KEY_BATTERY_LEVEL, 50);
+
+        verifyAttributes(decoder, text(
                 "!5,17,V"));
 
         verifyNull(decoder, text(
diff --git a/src/test/java/org/traccar/protocol/MobilogixProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/MobilogixProtocolDecoderTest.java
index dc60edb15..ddfa6ad8b 100644
--- a/src/test/java/org/traccar/protocol/MobilogixProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/MobilogixProtocolDecoderTest.java
@@ -2,6 +2,7 @@ package org.traccar.protocol;
 
 import org.junit.Test;
 import org.traccar.ProtocolTest;
+import org.traccar.model.Position;
 
 public class MobilogixProtocolDecoderTest extends ProtocolTest {
 
@@ -10,12 +11,58 @@ public class MobilogixProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new MobilogixProtocolDecoder(null);
 
+        verifyAttributes(decoder, text(
+                "[2021-08-20 19:27:14,T14,1,V1.3.5,201909000982,53,12.18"));
+
+        verifyAttributes(decoder, text(
+                "\r\n[2021-08-20 19:27:14,T14,1,V1.3.5,201909000982,53,12.18"));
+
         verifyNull(decoder, text(
                 "[2020-12-01 14:00:22,T1,1,V1.1.1,201951132031,,,12345678,724108005415815,359366080211420"));
 
+        verifyNull(decoder, text(
+                "[2020-10-25 20:44:08,T8,1,V1.2.3,201951132044,3596"));
+
+        verifyPosition(decoder, text(
+                "[2020-10-25 20:45:09,T9,1,V1.2.3,201951132044,59,10.50,701,-25.236860,-45.708530,0,314"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:46:10,T10,1,V1.2.3,201951132044,59,0.50,082,-25.909590,-47.045387,0,145"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:47:11,T11,1,V1.2.3,201951132044,3F,9.23,991,-25.909262,-47.045387,1,341"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:54:11,T12,1,V1.2.3,201951132044,3F,9.23,991,-25.909262,-47.045387,1,341"));
+
+        verifyAttributes(decoder, text(
+                "[2021-10-25 20:48:14,T14,1,V1.2.3,201951132044,51,0.50"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:49:15,T15,1,V1.2.3,201951132044,59,0.50,591,-25.908621,-47.045971,2,127"));
+
+        verifyNull(decoder, text(
+                "[2021-10-25 20:50:16,T16,1,V1.2.3,201951132044,1"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:51:21,T21,1,V1.2.3,201951132044,37,12.18,961,-25.932310,-47.022415,0,82"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:52:22,T22,1,V1.2.3,201951132044,1B,12.05,082,-25.909590,-47.045387,0,145"));
+
+        verifyPosition(decoder, text(
+                "[2021-10-25 20:53:31,T31,1,V1.2.3,201951132044,D3,26.17,961,-23.458092,-46.392132,0,8"));
+
+        verifyAttribute(decoder, text(
+                "[2021-10-25 20:55:11,T13,1,V1.2.3,201951132044,3F,9.23,991,-25.909262,-47.045387,1,341"),
+                Position.KEY_TYPE, "T13");
+
         verifyPosition(decoder, text(
                 "[2020-12-01 12:01:09,T3,1,V1.1.1,201951132031,3B,12.99,022,-23.563410,-46.588055,0,0"));
 
+        verifyPosition(decoder, text(
+                "[2021-09-30 20:06:35,T21,1,V1.3.5,201950130047,37,14.97,092,-23.494715,-46.851341,0,240,4.08,0,19516,4431,0.78,724,10,09111,00771,31,4680"));
+
     }
 
 }
diff --git a/src/test/java/org/traccar/protocol/MxtProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/MxtProtocolDecoderTest.java
index 71ad22a96..301b6102b 100644
--- a/src/test/java/org/traccar/protocol/MxtProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/MxtProtocolDecoderTest.java
@@ -11,6 +11,9 @@ public class MxtProtocolDecoderTest extends ProtocolTest {
         var decoder = new MxtProtocolDecoder(null);
 
         verifyPosition(decoder, binary(
+                "01a631a7627b00087dc41c40850006aab70affecdf23fd32200080000600000000000000000000001b2ff03b1bb9c4c60214f40100050000006c2d0000f427600051051101de0704"));
+
+        verifyPosition(decoder, binary(
                 "01a631144c7e0008643ad2f456fb2d49747cfe4cbe0ffd002008800000001021000fd43d3f1403000000ff300000f42760001031102445a81fda04"));
 
         verifyPosition(decoder, binary(
diff --git a/src/test/java/org/traccar/protocol/NavtelecomFrameDecoderTest.java b/src/test/java/org/traccar/protocol/NavtelecomFrameDecoderTest.java
new file mode 100644
index 000000000..07b19651b
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/NavtelecomFrameDecoderTest.java
@@ -0,0 +1,44 @@
+package org.traccar.protocol;
+
+import org.junit.Ignore;
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class NavtelecomFrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new NavtelecomFrameDecoder();
+
+        verifyFrame(
+                binary("404e5443010000000000000013004e452a3e533a383636373935303331343130363839"),
+                decoder.decode(null, null, binary("404e5443010000000000000013004e452a3e533a383636373935303331343130363839")));
+
+        verifyFrame(
+                binary("404e544301000000000000002a005e6c2a3e464c4558b01e1efffffe300a08080ffffe08000000580028002bc0000000000000b4000000000000"),
+                decoder.decode(null, null, binary("404e544301000000000000002a005e6c2a3e464c4558b01e1efffffe300a08080ffffe08000000580028002bc0000000000000b4000000000000")));
+
+    }
+
+    @Ignore
+    @Test
+    public void testDecodeFull() throws Exception {
+
+        var decoder = new NavtelecomFrameDecoder();
+
+        verifyFrame(
+                binary("404e5443010000000000000013004e452a3e533a383636373935303331343130363839"),
+                decoder.decode(null, null, binary("404e5443010000000000000013004e452a3e533a383636373935303331343130363839")));
+
+        verifyFrame(
+                binary("404e544301000000000000002a005e6c2a3e464c4558b01e1efffffe300a08080ffffe08000000580028002bc0000000000000b4000000000000"),
+                decoder.decode(null, null, binary("404e544301000000000000002a005e6c2a3e464c4558b01e1efffffe300a08080ffffe08000000580028002bc0000000000000b4000000000000")));
+
+        verifyFrame(
+                binary("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"),
+                decoder.decode(null, null, binary("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")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/NavtelecomProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/NavtelecomProtocolDecoderTest.java
index 8b22c6e79..fd22049fc 100644
--- a/src/test/java/org/traccar/protocol/NavtelecomProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/NavtelecomProtocolDecoderTest.java
@@ -14,8 +14,17 @@ public class NavtelecomProtocolDecoderTest extends ProtocolTest {
                 "404e5443010000000000000013004e452a3e533a383636373935303331343130363839"));
 
         verifyNull(decoder, binary(
+                "404e544301000000000000002a005e6c2a3e464c4558b01e1efffffe300a08080ffffe08000000580028002bc0000000000000b4000000000000"));
+
+        verifyPositions(decoder, binary(
+                "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"));
+
+        verifyNull(decoder, binary(
                 "404e544301000000000000001300f7fc2a3e464c4558b00a0a45fffe00000000000000"));
 
+        verifyNull(decoder, binary(
+                "404e544301000000000000001300cbc02a3e464c4558b00a0a45fffe300a0e08000000"));
+
     }
 
 }
diff --git a/src/test/java/org/traccar/protocol/StartekProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/StartekProtocolDecoderTest.java
index e85672326..5d22344fa 100644
--- a/src/test/java/org/traccar/protocol/StartekProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/StartekProtocolDecoderTest.java
@@ -11,11 +11,20 @@ public class StartekProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new StartekProtocolDecoder(null);
 
+        verifyPosition(decoder, text(
+                "&&o142,860262050066062,000,27,,211111070826,V,28.653435,-106.077455,0,0.0,0,151,1412,918,0|0|4708|01402D19,6,0000001A,02,00,04C0|016C|0000|0000,1,,,BB"));
+
+        verifyPosition(decoder, text(
+                "&&W149,865429043319537,000,0,,211103013512,A,22.679003,114.045085,16,1.1,0,271,76,109075,460|0|249F|000010C5,19,0000003E,00,00,0A57|0168|0000|0000,1,0100000C"));
+
         verifyAttribute(decoder, text(
                 "&&:23,860262050015424,129,OKA2"),
                 Position.KEY_RESULT, "129,OK");
 
         verifyPosition(decoder, text(
+                "&&X152,861157040151686,000,18,,210907163833,A,10.232715,-67.880423,11,1.4,0,275,437,34804,734|2|3EE4|00579406,28,00000015,00,00,0000|017D|0000|0000,1,010000,,9A"));
+
+        verifyPosition(decoder, text(
                 "&&o125,861157040554384,000,0,,210702235150,A,27.263505,153.037061,11,1.2,0,0,31,5125,505|1|7032|8C89802,20,0000002D,00,00,01E2|019DF0"));
 
         verifyAttribute(decoder, text(
diff --git a/src/test/java/org/traccar/protocol/StbProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/StbProtocolDecoderTest.java
index 5e351c19f..74b30f9eb 100644
--- a/src/test/java/org/traccar/protocol/StbProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/StbProtocolDecoderTest.java
@@ -10,8 +10,8 @@ public class StbProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new StbProtocolDecoder(null);
 
-        verifyPosition(decoder, text(
-                "{\"msgType\":310,\"attrList\":[{\"id\":\"01106001\",\"value\":31},{\"id\":\"01101001\",\"value\":1},{\"id\":\"01102001\",\"value\":113.826355},{\"id\":\"01103001\",\"value\":22.846399}],\"devId\":\"BT106001020JPZZ210718001\",\"txnNo\":\"1626940074000\"}"));
+        verifyAttributes(decoder, text(
+                "{\"attrList\":[{\"id\":\"02101001\",\"value\":\"510101051161205774\"},{\"id\":\"02105001\",\"value\":\"-61\"},{\"id\":\"02102001\",\"value\":\"1\"},{\"doorId\":\"1\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"1\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"1\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"1\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"2\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"2\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"2\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"2\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"3\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"3\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"3\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"3\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"4\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"4\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"4\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"4\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"5\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"5\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"5\",\"id\":\"02103001\",\"value\":\"1\"},{\"doorId\":\"5\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"6\",\"id\":\"02104001\",\"value\":\"2\"},{\"doorId\":\"6\",\"id\":\"02106001\",\"value\":\"BT106002320JPZZ210718002\"},{\"doorId\":\"6\",\"id\":\"02109001\",\"value\":\"98\"},{\"doorId\":\"6\",\"id\":\"02110001\",\"value\":\"100\"},{\"doorId\":\"6\",\"id\":\"01118001\",\"value\":\"27\"},{\"doorId\":\"6\",\"id\":\"01119001\",\"value\":\"26\"},{\"doorId\":\"6\",\"id\":\"01120001\",\"value\":\"28\"},{\"doorId\":\"6\",\"id\":\"02114001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"02116001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"02117001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"01121001\",\"value\":\"2\"},{\"doorId\":\"6\",\"id\":\"02130001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"01122001\",\"value\":\"4\"},{\"doorId\":\"6\",\"id\":\"02001001\",\"value\":\"000\"},{\"doorId\":\"6\",\"id\":\"02002001\",\"value\":\"000\"},{\"doorId\":\"6\",\"id\":\"01116001\",\"value\":\"20\"},{\"doorId\":\"6\",\"id\":\"01117001\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117002\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117003\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117004\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117005\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117006\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117007\",\"value\":\"3325\"},{\"doorId\":\"6\",\"id\":\"01117008\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117009\",\"value\":\"3325\"},{\"doorId\":\"6\",\"id\":\"01117010\",\"value\":\"3326\"},{\"doorId\":\"6\",\"id\":\"01117011\",\"value\":\"3326\"},{\"doorId\":\"6\",\"id\":\"01117012\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117013\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117014\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117015\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117016\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117017\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117018\",\"value\":\"3323\"},{\"doorId\":\"6\",\"id\":\"01117019\",\"value\":\"3324\"},{\"doorId\":\"6\",\"id\":\"01117020\",\"value\":\"3323\"},{\"batteryId\":\"BT106002320JPZZ210718002\",\"doorId\":\"6\",\"id\":\"02103001\",\"value\":\"1\"},{\"batteryId\":\"BT106002320JPZZ210718002\",\"doorId\":\"6\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"7\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"7\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"7\",\"id\":\"02103001\",\"value\":\"1\"},{\"doorId\":\"7\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"8\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"8\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"8\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"8\",\"id\":\"02118001\",\"value\":\"1\"},{\"id\":\"02111001\",\"value\":\"0.0\"},{\"id\":\"02112001\",\"value\":\"0.0\"},{\"id\":\"02107001\",\"value\":\"229.1\"},{\"id\":\"02108001\",\"value\":\"1.005\"},{\"id\":\"02120001\",\"value\":\"143.76\"},{\"id\":\"02113001\",\"value\":\"29\"},{\"id\":\"02119001\",\"value\":\"1\"}],\"devId\":\"CHZD08KPD0210425046\",\"isFull\":1,\"msgType\":310,\"txnNo\":\"1636707944778\"}"));
 
         verifyAttributes(decoder, text(
                 "{\"attrList\":[{\"doorId\":\"4\",\"id\":\"02103001\",\"value\":\"1\"},{\"doorId\":\"2\",\"id\":\"02103001\",\"value\":\"0\"},{\"id\":\"02120001\",\"value\":\"11.37\"},{\"doorId\":\"6\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"5\",\"id\":\"02103001\",\"value\":\"0\"},{\"id\":\"02105001\",\"value\":\"-150\"},{\"id\":\"02102001\",\"value\":\"1\"},{\"doorId\":\"5\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"5\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"1\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"1\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"7\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"3\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"1\",\"id\":\"02106001\",\"value\":\"\"},{\"id\":\"02101001\",\"value\":\"\"},{\"id\":\"02119001\",\"value\":\"1\"},{\"doorId\":\"6\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"8\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"3\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"2\",\"id\":\"02106001\",\"value\":\"\"},{\"id\":\"02108001\",\"value\":\"0.922\"},{\"doorId\":\"2\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"7\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"4\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"3\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"8\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"1\",\"id\":\"02103001\",\"value\":\"0\"},{\"doorId\":\"2\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"7\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"8\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"3\",\"id\":\"02106001\",\"value\":\"\"},{\"doorId\":\"4\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"8\",\"id\":\"02106001\",\"value\":\"\"},{\"id\":\"02112001\",\"value\":\"0.0\"},{\"doorId\":\"4\",\"id\":\"02104001\",\"value\":\"0\"},{\"id\":\"02111001\",\"value\":\"0.0\"},{\"id\":\"02113001\",\"value\":\"27\"},{\"doorId\":\"5\",\"id\":\"02118001\",\"value\":\"1\"},{\"doorId\":\"7\",\"id\":\"02104001\",\"value\":\"0\"},{\"doorId\":\"6\",\"id\":\"02118001\",\"value\":\"1\"},{\"id\":\"02107001\",\"value\":\"229.7\"}],\"devId\":\"CHZD08KPD0210425046\",\"isFull\":0,\"msgType\":310,\"txnNo\":\"1626153841985\"}"));
diff --git a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
index 8cc4148f0..a9720f437 100644
--- a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
@@ -82,6 +82,15 @@ public class SuntechProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new SuntechProtocolDecoder(null);
 
+        verifyPosition(decoder, buffer(
+                "BLE;1140000053;114;1.0.1;20211001;17:27:09;+28.433465;-82.565891;1;-43;-46;-41;ACB89523EF68;247;0;0"));
+
+        verifyPosition(decoder, buffer(
+                "BLE;0820012345;82;1.0.0;20191203;17:00:51;+32.691615;-117.297160;2;-32;-100;33;AABBCCDDEEFF;12;18;52;1;-44;44;112233445566;32;69;101"));
+
+        verifyNull(decoder, buffer(
+                "BSA;0820012345;001FFF;82;1.0.0;1;20191203;17:00:51;+32.691615;-117.297160;1;-55;68:11:6A:FD:1A:A7;6AA5;1DE8"));
+
         verifyAttribute(decoder, buffer(
                 "ST300UEX;511331307;45;311;20210420;12:41:01;12361;-01.280825;-047.931773;000.000;000.00;16;1;0;12.54;000000;23;GTSL|6|1|0|9255143|2|;6F;000276;0.0;1;00000000000000;0"),
                 Position.KEY_DRIVER_UNIQUE_ID, "9255143");
diff --git a/src/test/java/org/traccar/protocol/T800xProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/T800xProtocolDecoderTest.java
index 61fb658a6..1dd4e8619 100644
--- a/src/test/java/org/traccar/protocol/T800xProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/T800xProtocolDecoderTest.java
@@ -18,6 +18,9 @@ public class T800xProtocolDecoderTest extends ProtocolTest {
                 "27271000277bb30860112047066487210407022840000004e6215130c50fff620a0c1518000156"));
 
         verifyPosition(decoder, binary(
+                "252514005901c00867730050941347001e46501e03e80064f2c0001401000041000000000000000000ffffffff160000034ec40021100719073800000000c2fb90c21291fd400000000003961237ffff0000002effffffffff"));
+
+        verifyPosition(decoder, binary(
                 "27270200497d880860112047066487470021040702270500006442d4e2e342f671b441000000008000008080881dff3900000384700640003c0000001e1e00641e30d2800000000000"));
 
         verifyAttributes(decoder, binary(
diff --git a/src/test/java/org/traccar/protocol/TechtoCruzFrameDecoderTest.java b/src/test/java/org/traccar/protocol/TechtoCruzFrameDecoderTest.java
new file mode 100644
index 000000000..dc4afb784
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/TechtoCruzFrameDecoderTest.java
@@ -0,0 +1,25 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+import static org.junit.Assert.assertEquals;
+
+public class TechtoCruzFrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new TechtoCruzFrameDecoder();
+
+        assertEquals(
+                buffer("$$A35,RESPO|G33|8612345678910|CRUZ,*E3"),
+                decoder.decode(null, null, buffer("$$A35,RESPO|G33|8612345678910|CRUZ,*E3")));
+
+        assertEquals(
+                buffer("$$A120,8612345678910,211005105836,A,FLEX,KCB 947C,000.0,0,-1.38047,S,36.93951,E,1648.4,243.140,21,28,12.1,3.7,0,1,0,0,0,*F6"),
+                decoder.decode(null, null, buffer("$$A120,8612345678910,211005105836,A,FLEX,KCB 947C,000.0,0,-1.38047,S,36.93951,E,1648.4,243.140,21,28,12.1,3.7,0,1,0,0,0,*F6")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/TechtoCruzProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/TechtoCruzProtocolDecoderTest.java
new file mode 100644
index 000000000..4cef682b4
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/TechtoCruzProtocolDecoderTest.java
@@ -0,0 +1,21 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class TechtoCruzProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new TechtoCruzProtocolDecoder(null);
+
+        verifyPosition(decoder, text(
+                "$$A120,8612345678910,211005105836,A,FLEX,KCB 947C,000.0,0,-1.38047,S,36.93951,E,1648.4,243.140,21,28,12.1,3.7,0,1,0,0,0,*F6"));
+
+        verifyNull(decoder, text(
+                "$$A35,RESPO|G33|8612345678910|CRUZ,*E3"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/TopinProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/TopinProtocolDecoderTest.java
index 8f5b5ebbb..e8da93006 100644
--- a/src/test/java/org/traccar/protocol/TopinProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/TopinProtocolDecoderTest.java
@@ -2,6 +2,7 @@ package org.traccar.protocol;
 
 import org.junit.Test;
 import org.traccar.ProtocolTest;
+import org.traccar.model.Position;
 
 public class TopinProtocolDecoderTest extends ProtocolTest {
 
@@ -16,6 +17,14 @@ public class TopinProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, binary(
                 "78780d0103593390754169634d0d0a"));
 
+        verifyAttribute(decoder, binary(
+                "7878006921120412565802010601071e4a9764071e4a9864010d0a"),
+                Position.KEY_ALARM, Position.ALARM_VIBRATION);
+
+        verifyAttribute(decoder, binary(
+                "787801940D0A"),
+                Position.KEY_ALARM, Position.ALARM_VIBRATION);
+
         verifyAttributes(decoder, binary(
                 "78780A13424008196400041F000D0A"));
 
diff --git a/src/test/java/org/traccar/protocol/TopinProtocolEncoderTest.java b/src/test/java/org/traccar/protocol/TopinProtocolEncoderTest.java
new file mode 100644
index 000000000..d3ff13941
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/TopinProtocolEncoderTest.java
@@ -0,0 +1,24 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+import org.traccar.model.Command;
+
+public class TopinProtocolEncoderTest extends ProtocolTest {
+
+    @Test
+    public void testEncode() throws Exception {
+
+        var encoder = new TopinProtocolEncoder(null);
+
+        Command command = new Command();
+        command.setDeviceId(1);
+        command.setType(Command.TYPE_SOS_NUMBER);
+        command.set(Command.KEY_INDEX, 1);
+        command.set(Command.KEY_PHONE, "13533333333");
+
+        verifyCommand(encoder, command, binary("78780C4131333533333333333333330D0A"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/TzoneProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/TzoneProtocolDecoderTest.java
index 0aeea0f1a..fba8f7db4 100644
--- a/src/test/java/org/traccar/protocol/TzoneProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/TzoneProtocolDecoderTest.java
@@ -11,6 +11,9 @@ public class TzoneProtocolDecoderTest extends ProtocolTest {
         var decoder = new TzoneProtocolDecoder(null);
 
         verifyAttributes(decoder, binary(
+                "545a004d24240407010d0000018032100000031515090c052c2100000022030a033400201347000056860a03340020134700002feb0a03340020134700007d96000baa10211f01810127022d000001ebe00d0a"));
+
+        verifyAttributes(decoder, binary(
                 "545A004B2424041302000000086706003324776413030C0A1A2900180513030C0A1A25080F7E1028CAC830000A000F0000000005000AA53201633D05046000010009AA201737019408973B0032B0260D0A"));
 
         verifyAttributes(decoder, binary(
diff --git a/src/test/java/org/traccar/protocol/WatchProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/WatchProtocolDecoderTest.java
index 4544b5827..98e83f491 100644
--- a/src/test/java/org/traccar/protocol/WatchProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/WatchProtocolDecoderTest.java
@@ -20,6 +20,9 @@ public class WatchProtocolDecoderTest extends ProtocolTest {
                 Position.PREFIX_TEMP + 1, 35.29);
 
         verifyPosition(decoder, buffer(
+                "[SG*9059056143*0053*UD,251021,223408,A,41.46500,N,081.53128,W,0.926,000,0,00,70,70,0,50,00000000,0,1,,,,00]"));
+
+        verifyPosition(decoder, buffer(
                 "[3G*2104326058*00E9*UD_LTE,300621,135101,A,32.162652,N,34.888748,E,30.84,265.158,65.621,18,100,83,0,0,00000000,1,1,425,01,10223,8012811,100,3,ES4104,22:74:1d:39:64:ff,-46,metropoline-wifi,a8:3f:a1:e0:66:ba,-89,Egged.co.il,00:0c:42:51:cf:cd,-81,1.7055488]"));
 
         verifyPosition(decoder, buffer(
diff --git a/src/test/java/org/traccar/protocol/Xexun2FrameDecoderTest.java b/src/test/java/org/traccar/protocol/Xexun2FrameDecoderTest.java
new file mode 100644
index 000000000..aeca95376
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/Xexun2FrameDecoderTest.java
@@ -0,0 +1,19 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class Xexun2FrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new Xexun2FrameDecoder();
+
+        verifyFrame(
+                binary("faaf0014000286147503139003400032f2b001002f4260b0d6a0008019104a3378323130333135317c323130333132303100704020308715758089502023015648643670faaf"),
+                decoder.decode(null, null, binary("faaf0014000286147503139003400032f2b001002f4260b0d6a0008019104a3378323130333135317c323130333132303100704020308715758089502023015648643670faaf")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/Xexun2ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Xexun2ProtocolDecoderTest.java
new file mode 100644
index 000000000..89c499016
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/Xexun2ProtocolDecoderTest.java
@@ -0,0 +1,27 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class Xexun2ProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new Xexun2ProtocolDecoder(null);
+
+        verifyPositions(decoder, false, binary(
+                "FAAF00140004863921033475388000AFB7D203003800380038F9608A7B801E0060820205788A205DF523D97844FDB90443D37844FDB90465CFB4FBF946B0E8CEF639095803F8CC00000002350000004000FA608A7BA81E0060820205788A205DF523D97844FDB90443D2F639095803F8CFB4FBF946B0E8CE7844FDB90465CD00000002350000004000FB608A7BD01E0060820205788A205DF523D97844FDB90443D2F639095803F8CFB4FBF946B0E8CE7844FDB90465CD00000002350000004000FAAF"));
+
+        verifyPositions(decoder, false, binary(
+                "faaf0014000286147503139003400032f2b001002f4260b0d6a0008019104a3378323130333135317c323130333132303100704020308715758089502023015648643670faaf"));
+
+        verifyPositions(decoder, false, binary(
+                "FAAF0014000486188105421927500035E6D2010032FC60EC264D00002003000000020205444E6DD72699D674427F7712CBC3BCF2AFD910BAC1C6FBE474CFC7A9B4FBE474CFC7A6FAAF"));
+
+        verifyPositions(decoder, binary(
+                "FAAF00140CF18626490454584530002BF2DD0200130013D360EFD7F514006402010D46322C4A450BA026D460EFD7FA14006402010D46322C4A450BA026FAAF"));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/Xt2400ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Xt2400ProtocolDecoderTest.java
index 9562a75e2..1b3f6fcbb 100644
--- a/src/test/java/org/traccar/protocol/Xt2400ProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Xt2400ProtocolDecoderTest.java
@@ -10,7 +10,7 @@ public class Xt2400ProtocolDecoderTest extends ProtocolTest {
 
         var decoder = new Xt2400ProtocolDecoder(null);
 
-        decoder.setConfig("\n::wycfg pcr[1] 012801030405060708090a1213c8545657585a656e7d2cd055595d5e71797a7b7c7e7f80818285866b\n");
+        decoder.setConfig("\n:wycfg pcr[1] 012801030405060708090a1213c8545657585a656e7d2cd055595d5e71797a7b7c7e7f80818285866b\n");
 
         verifyPosition(decoder, binary(
                 "010ae85be10801a05d52d590030b12d1f9330be9290a0000ff10008b00000000000000000000000000000000000000000000000000000000000000000000000000003839333032363930323031303036363039373733000000000000000000000000000000000000000000000000000000000000000000000000000000000000020000"));
diff --git a/templates/short/alarm.vm b/templates/short/alarm.vm
index ce641781b..15970dab8 100644
--- a/templates/short/alarm.vm
+++ b/templates/short/alarm.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: alarm!")
 $device.name alarm: $position.getString("alarm") at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/commandResult.vm b/templates/short/commandResult.vm
index 27fd668be..6dc7a5dec 100644
--- a/templates/short/commandResult.vm
+++ b/templates/short/commandResult.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: command result received")
 $device.name command result received: $position.getString("result") at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceFuelDrop.vm b/templates/short/deviceFuelDrop.vm
index 5eabe9cc0..babe14351 100644
--- a/templates/short/deviceFuelDrop.vm
+++ b/templates/short/deviceFuelDrop.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: fuel drop")
 $device.name fuel drop at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceInactive.vm b/templates/short/deviceInactive.vm
index d7431124c..c293bf1b2 100644
--- a/templates/short/deviceInactive.vm
+++ b/templates/short/deviceInactive.vm
@@ -1,3 +1,4 @@
+#set($subject = "$device.name: inactive")
 #set($lastUpdate = $dateTool.getDate())
 #set($ignore = $lastUpdate.setTime($event.getLong("lastUpdate")))
 $device.name inactive from $dateTool.format("YYYY-MM-dd HH:mm:ss", $lastUpdate, $locale, $timezone)
diff --git a/templates/short/deviceMoving.vm b/templates/short/deviceMoving.vm
index a08becd2b..bf6aec340 100644
--- a/templates/short/deviceMoving.vm
+++ b/templates/short/deviceMoving.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: moving")
 $device.name moving at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceOffline.vm b/templates/short/deviceOffline.vm
index 1dac43ac6..e663812ab 100644
--- a/templates/short/deviceOffline.vm
+++ b/templates/short/deviceOffline.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: offline")
 $device.name offline at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceOnline.vm b/templates/short/deviceOnline.vm
index 3c18097c1..bf3b40096 100644
--- a/templates/short/deviceOnline.vm
+++ b/templates/short/deviceOnline.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: online")
 $device.name online at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceOverspeed.vm b/templates/short/deviceOverspeed.vm
index fe318fe08..849c6ddb7 100644
--- a/templates/short/deviceOverspeed.vm
+++ b/templates/short/deviceOverspeed.vm
@@ -1,3 +1,4 @@
+#set($subject = "$device.name: exceeds the speed")
 #if($speedUnit == 'kmh')
 #set($speedValue = $position.speed * 1.852)
 #set($speedString = $numberTool.format("0.0 km/h", $speedValue))
diff --git a/templates/short/deviceStopped.vm b/templates/short/deviceStopped.vm
index 1a63630ba..8fabf89f1 100644
--- a/templates/short/deviceStopped.vm
+++ b/templates/short/deviceStopped.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: stopped")
 $device.name stopped at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/deviceUnknown.vm b/templates/short/deviceUnknown.vm
index 37baa30a7..b6a6e9c9f 100644
--- a/templates/short/deviceUnknown.vm
+++ b/templates/short/deviceUnknown.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: status is unknown")
 $device.name status is unknown at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/driverChanged.vm b/templates/short/driverChanged.vm
index 36ed8955e..df96b00a1 100644
--- a/templates/short/driverChanged.vm
+++ b/templates/short/driverChanged.vm
@@ -1,3 +1,4 @@
+#set($subject = "$device.name: driver has changed")
 #if($driver)
 #set($driverName = $driver.name)
 #else
diff --git a/templates/short/geofenceEnter.vm b/templates/short/geofenceEnter.vm
index 962eecc53..8c250665e 100644
--- a/templates/short/geofenceEnter.vm
+++ b/templates/short/geofenceEnter.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: has entered geofence")
 $device.name has entered geofence $geofence.name at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/geofenceExit.vm b/templates/short/geofenceExit.vm
index 47999fa94..7d3ae6f6e 100644
--- a/templates/short/geofenceExit.vm
+++ b/templates/short/geofenceExit.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: has exited geofence")
 $device.name has exited geofence $geofence.name at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/ignitionOff.vm b/templates/short/ignitionOff.vm
index 4d4b45ccc..db5a3f3e1 100644
--- a/templates/short/ignitionOff.vm
+++ b/templates/short/ignitionOff.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: ignition OFF")
 $device.name ignition OFF at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/ignitionOn.vm b/templates/short/ignitionOn.vm
index d8dd07966..412ad4d84 100644
--- a/templates/short/ignitionOn.vm
+++ b/templates/short/ignitionOn.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: ignition ON")
 $device.name ignition ON at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/maintenance.vm b/templates/short/maintenance.vm
index a931e5c20..a58e274b8 100644
--- a/templates/short/maintenance.vm
+++ b/templates/short/maintenance.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: maintenance is required")
 $device.name maintenance $maintenance.name is required at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/test.vm b/templates/short/test.vm
index d25f218ce..c9d93ce67 100644
--- a/templates/short/test.vm
+++ b/templates/short/test.vm
@@ -1 +1,2 @@
+#set($subject = "Test message")
 Test message
diff --git a/templates/short/textMessage.vm b/templates/short/textMessage.vm
index 59fa7cbc6..54c134df4 100644
--- a/templates/short/textMessage.vm
+++ b/templates/short/textMessage.vm
@@ -1 +1,2 @@
+#set($subject = "$device.name: text message received")
 Text message received from $device.name at $dateTool.format("YYYY-MM-dd HH:mm:ss", $event.eventTime, $locale, $timezone)
diff --git a/templates/short/unknown.vm b/templates/short/unknown.vm
index fd20b50cc..2f9d5e3af 100644
--- a/templates/short/unknown.vm
+++ b/templates/short/unknown.vm
@@ -1 +1,2 @@
+#set($subject = "Unknown type")
 Unknown type