Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rce3e0696642099164fa482c864509c67ce65579b -rdf41331377d5da437e853327019c17c58e3af775
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision ce3e0696642099164fa482c864509c67ce65579b)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision df41331377d5da437e853327019c17c58e3af775)
@@ -1318,6 +1318,32 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleUIAlarmSilenceRequest function handles an alarm silence request
+ * message.
+ * @details Inputs: none
+ * @details Outputs: alarm silence command is handled.
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleUIAlarmSilenceRequest( MESSAGE_T *message )
+{
+    if ( message->hdr.payloadLen == sizeof( U08 ) )
+    {
+        U08 *payloadPtr = message->payload;
+        U08 cmd;
+
+        memcpy( &cmd, payloadPtr, sizeof( U08 ) );
+
+        signalAlarmSilence( cmd );
+    }
+    else
+    {
+        sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_UI, FALSE );
+    }
+}
+
+/*********************************************************************//**
+ * @brief
  * The handleAlarmUserAction function handles a user alarm action event message.
  * @details Inputs: none
  * @details Outputs: selected action initiated.
@@ -1338,6 +1364,10 @@
             signalAlarmUserActionInitiated( (ALARM_USER_ACTION_T)action );
         }
     }
+    else
+    {
+        sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_UI, FALSE );
+    }
 }
 
 /*********************************************************************//**