Index: firmware/App/Services/AlarmMgmt.c
===================================================================
diff -u -r5d82009d1baa2b52122065934481745bf4de223b -r92d1230313c92c7480b9ae80a37b7a594232f59d
--- firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision 5d82009d1baa2b52122065934481745bf4de223b)
+++ firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision 92d1230313c92c7480b9ae80a37b7a594232f59d)
@@ -40,6 +40,8 @@
 
 const ALARM_DATA_T BLANK_ALARM_DATA = { ALARM_DATA_TYPE_NONE, 0 };      ///< A blank alarm data record for alarms that do not include alarm data when triggered.
 
+#define SUPERVISOR_ALARM_KEY        0xD2C3B4A5                          ///< 32-bit key required for clear all alarms request.
+
 // ********** private data **********
 
 static BOOL alarmIsActive[ NUM_OF_ALARM_IDS ];                          ///< Array of current state of each alarm
@@ -333,4 +335,44 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The testClearAllAlarms function clears all active alarms, even if they
+ * are non-recoverable or faults.  The caller of this function must provide
+ * the correct 32-bit key.  A Dialin user must also be logged into DG.
+ * @details Inputs: none
+ * @details Outputs: alarmIsActive[], alarmStartedAt[]
+ * @param key 32-bit supervior alarm key required to perform this function
+ * @return TRUE if override reset successful, FALSE if not
+ *************************************************************************/
+BOOL testClearAllAlarms( U32 key )
+{
+    BOOL result = FALSE;
+
+    // Verify key
+    if ( SUPERVISOR_ALARM_KEY == key )
+    {
+        // Verify tester has logged in with HD
+        if ( TRUE == isTestingActivated() )
+        {
+            ALARM_ID_T a;
+
+            // Clear all active alarms
+            for ( a = ALARM_ID_NO_ALARM; a < NUM_OF_ALARM_IDS; a++ )
+            {
+                if ( TRUE == alarmIsActive[ a ] )
+                {
+                    U32 al = (U32)a;
+
+                    broadcastData( MSG_ID_ALARM_CLEARED, COMM_BUFFER_OUT_CAN_DG_ALARM, (U08*)&al, sizeof( U32 ) );
+                    alarmIsActive[ a ] = FALSE;
+                }
+            }
+            result = TRUE;
+        }
+    }
+
+    return result;
+}
+
 /**@}*/
Index: firmware/App/Services/AlarmMgmt.h
===================================================================
diff -u -r47c41046beba8affaaaa13a4f222a7b99bd193f1 -r92d1230313c92c7480b9ae80a37b7a594232f59d
--- firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision 47c41046beba8affaaaa13a4f222a7b99bd193f1)
+++ firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision 92d1230313c92c7480b9ae80a37b7a594232f59d)
@@ -92,6 +92,7 @@
 
 BOOL testSetAlarmStateOverride( U32 alarmID, BOOL value );
 BOOL testResetAlarmStateOverride( U32 alarmID );
+BOOL testClearAllAlarms( U32 key );
 
 /**@}*/
 
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r59543c15efd37e0e23269768df9a1cb9b6a3d296 -r92d1230313c92c7480b9ae80a37b7a594232f59d
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 59543c15efd37e0e23269768df9a1cb9b6a3d296)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 92d1230313c92c7480b9ae80a37b7a594232f59d)
@@ -1288,6 +1288,10 @@
                 handleTestBlockMessagesRequest( message );
                 break;
 
+            case MSG_ID_DG_SUPER_CLEAR_ALARMS_CMD:
+                handleTestSuperClearAlarmsRequest( message );
+                break;
+
             default:
                 // TODO - unrecognized message ID received - ignore
                 break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rc816a28448cd1c4d2c66a8d1ed8630e8bd4d2912 -r92d1230313c92c7480b9ae80a37b7a594232f59d
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision c816a28448cd1c4d2c66a8d1ed8630e8bd4d2912)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 92d1230313c92c7480b9ae80a37b7a594232f59d)
@@ -3822,4 +3822,29 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleTestSuperClearAlarmsRequest function handles a request to clear
+ * all active alarms on DG.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleTestSuperClearAlarmsRequest( MESSAGE_T *message )
+{
+    BOOL result = FALSE;
+
+    if ( message->hdr.payloadLen == sizeof(U32) )
+    {
+        U32 key;
+
+        memcpy( &key, message->payload, sizeof(U32) );
+        result = testClearAllAlarms( key );
+    }
+
+    // Respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
 /**@}*/
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r1c2f96bf994157b11c0c32ddaf96fc91a9a1da1d -r92d1230313c92c7480b9ae80a37b7a594232f59d
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 1c2f96bf994157b11c0c32ddaf96fc91a9a1da1d)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 92d1230313c92c7480b9ae80a37b7a594232f59d)
@@ -413,6 +413,9 @@
 // MSG_ID_DG_BLOCK_MESSAGE_TRANSMISSION
 void handleTestBlockMessagesRequest( MESSAGE_T *message );
 
+// MSG_ID_DG_SUPER_CLEAR_ALARMS_CMD
+void handleTestSuperClearAlarmsRequest( MESSAGE_T *message );
+
 /**@}*/
 
 #endif