1 files changed, 4 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/SabertekProtocolDecoder.java b/src/org/traccar/protocol/SabertekProtocolDecoder.java
index d1f88dc5e..715aa37f2 100644
--- a/src/org/traccar/protocol/SabertekProtocolDecoder.java
+++ b/src/org/traccar/protocol/SabertekProtocolDecoder.java
@@ -15,6 +15,7 @@
  */
 package org.traccar.protocol;
 
+import org.jboss.netty.buffer.ChannelBuffers;
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
@@ -69,6 +70,9 @@ public class SabertekProtocolDecoder extends BaseProtocolDecoder {
         }
 
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (channel != null) {
+            channel.write(ChannelBuffers.wrappedBuffer(new byte[]{(byte) (deviceSession != null ? 0x06 : 0x15)}));
+        }
         if (deviceSession == null) {
             return null;
         }