Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -rc554353ba10c84377f0b9f7218f911543a293598 -rdb4ababe9942a6c755ffc11d25af50f598e8dba6
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision c554353ba10c84377f0b9f7218f911543a293598)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision db4ababe9942a6c755ffc11d25af50f598e8dba6)
@@ -458,10 +458,7 @@
     // ACK/NAK request
     if ( message->hdr.msgID < MSG_ID_FIRST_TD_TESTER_MESSAGE )
     {
-//        if ( respBuffer != COMM_BUFFER_NOT_USED )
-//        {
-//            sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, respBuffer, ack );
-//        }
+        // only Sending Test ACK for dialin messages.
     }
     else
     {