1 files changed, 3 insertions, 3 deletions
diff --git a/src/org/traccar/protocol/At2000ProtocolDecoder.java b/src/org/traccar/protocol/At2000ProtocolDecoder.java
index f1399b731..e9c26d406 100644
--- a/src/org/traccar/protocol/At2000ProtocolDecoder.java
+++ b/src/org/traccar/protocol/At2000ProtocolDecoder.java
@@ -50,11 +50,11 @@ public class At2000ProtocolDecoder extends BaseProtocolDecoder {
 
     private static void sendResponse(Channel channel) {
         if (channel != null) {
-            ChannelBuffer response = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, BLOCK_LENGTH);
+            ChannelBuffer response = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 2 * BLOCK_LENGTH);
             response.writeByte(MSG_ACKNOWLEDGEMENT);
-            response.writeMedium(1);
+            response.writeMedium(ChannelBuffers.swapMedium(1));
             response.writeByte(0x00); // success
-            response.writerIndex(BLOCK_LENGTH);
+            response.writerIndex(2 * BLOCK_LENGTH);
             channel.write(response);
         }
     }