Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r229c6d4239f101656f99090b81deb28cfd0562b4 -rb0d1521cd365dbc9efb79a2774ed3360e3d450e9
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 229c6d4239f101656f99090b81deb28cfd0562b4)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision b0d1521cd365dbc9efb79a2774ed3360e3d450e9)
@@ -94,10 +94,10 @@
 static volatile U16 nextSeqNo = 1;                  ///< Next sequence number.
 /// List of message IDs that are requested not to be transmitted.
 static BLOCKED_MSGS_DATA_T blockedMessagesForXmit = { 0, 0, 0, 0, 0, 0, 0, 0 };
-
-// ********** private function prototypes **********
-
-static BOOL sendTestAckResponseMsg( MSG_ID_T msgID, BOOL ack );
+
+// ********** private function prototypes **********
+
+static BOOL sendTestAckResponseMsg( MSG_ID_T msgID, BOOL ack );
 static BOOL sendAckResponseMsg( MSG_ID_T msgID, COMM_BUFFER_T buffer, BOOL ack );
 static BOOL sendUIResponseMsg( MSG_ID_T msgID, UI_RESPONSE_PAYLOAD_T *uiResponse );
 
@@ -416,7 +416,6 @@
     return result;
 }
 
-
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************
@@ -450,21 +449,17 @@
  *************************************************************************/
 void handleRTCSyncFromHD( MESSAGE_T *message )
 {
-    // TODO - remove the code below until the issue for the synchronization
-    // of the DG RTC to the HD RTC is resolved.
-/*
-    // Only sync RTC to HD date/time when ...
     if ( TRUE == syncDG2HDDateTime() )
     {
         if ( sizeof( RTC_DATA_T ) == message->hdr.payloadLen )
         {
             RTC_DATA_T epoch;
 
             memcpy( &epoch, message->payload, sizeof( RTC_DATA_T ) );
+            isEpochValid ( epoch.epochTime );
             setRTCEpoch( epoch.epochTime );
         }
     }
-*/
 }
 
 /*********************************************************************//**
@@ -3661,37 +3656,6 @@
 }
 
 /*********************************************************************//**
- * @brief
- * The handleFansRPMOverride function handles a request to override a fans RPM value.
- * @details Inputs: none
- * @details Outputs: message handled
- * @param message a pointer to the message to handle
- * @return none
- *************************************************************************/
-void handleFansRPMOverride( MESSAGE_T *message )
-{
-    TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
-    BOOL result = FALSE;
-
-    // verify payload length
-    if ( sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) == message->hdr.payloadLen )
-    {
-        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) );
-        if ( FALSE == payload.reset )
-        {
-            result = testSetFanRPMOverride( payload.index, payload.state.f32 );
-        }
-        else
-        {
-            result = testResetFanRPMOverride( payload.index );
-        }
-    }
-
-    // respond to request
-    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
-}
-
-/*********************************************************************//**
 * @brief
 * The handleStopDGRTCClock function handles a request to stop the RTC clock.
 * @details Inputs: none
@@ -3830,10 +3794,41 @@
 
 /*********************************************************************//**
  * @brief
- * The handleTestFansRPMAlarmStartTimeOffsetRequest function handles a
- * request to set the fans RPM alarm start time offset.
+ * The handleFansRPMOverride function handles a request to override a fans RPM value.
  * @details Inputs: none
  * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleFansRPMOverride( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // verify payload length
+    if ( sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetFanRPMOverride( payload.index, payload.state.f32 );
+        }
+        else
+        {
+            result = testResetFanRPMOverride( payload.index );
+        }
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
+/*********************************************************************//**
+ * @brief
+ * The handleTestFansRPMAlarmStartTimeOverrideRequest function handles a
+ * request to override the fan RPM alarm start time.
+ * @details Inputs: none
+ * @details Outputs: message handled
  * @param message : a pointer to the message to handle
  * @return none
  *************************************************************************/
@@ -3856,7 +3851,6 @@
 }
 
 /*********************************************************************//**
- * @brief
  * The handleTestUsedAcidVolumeMLOverrideRequest function handles a
  * request to override the acid volume.
  * @details Inputs: none
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r229c6d4239f101656f99090b81deb28cfd0562b4 -rb0d1521cd365dbc9efb79a2774ed3360e3d450e9
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 229c6d4239f101656f99090b81deb28cfd0562b4)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision b0d1521cd365dbc9efb79a2774ed3360e3d450e9)
@@ -171,6 +171,12 @@
 // MSG_ID_DG_RESPONSE_SERVICE_MODE_REQUEST
 BOOL sendServiceModeResponse( BOOL accepted, U32 rejCode );
 
+// MSG_ID_HD_OP_MODE
+BOOL handleSetHDOperationMode( MESSAGE_T *message );
+
+// MSG_ID_HD_REQUEST_DG_USAGE_INFO
+void handleHDRequestDGUsageInfo( MESSAGE_T * message );
+
 // MSG_ID_DG_SET_SERVICE_TIME
 void handleSetDGServiceTime( MESSAGE_T *message );
 
@@ -394,6 +400,12 @@
 // MSG_ID_DG_DRAIN_PUMP_MEASURED_RPM_OVERRIDE
 void handleSetDrainPumpMeasuredRPMOverrideRequest( MESSAGE_T *message );
 
+// MSG_ID_DG_ALARM_INFO_SEND_INTERVAL_OVERRIDE
+void handleTestAlarmInfoSendIntervalOverrideRequest( MESSAGE_T *message );
+
+// MSG_ID_DG_SUPER_CLEAR_ALARMS_CMD
+void handleTestSuperClearAlarmsRequest( MESSAGE_T *message );
+
 // MSG_ID_DG_SET_FANS_RPM_ALARM_START_TIME_OFFSET
 void handleTestFansRPMAlarmStartTimeOffsetRequest( MESSAGE_T *message );
 
@@ -414,21 +426,27 @@
 void handleSetDGSoftwareConfigRecord( MESSAGE_T *message );
 #endif
 
+// MSG_ID_HD_REQUEST_DG_ALARMS
+void handleResendAllAlarmsCommand( MESSAGE_T *message );
+
 // MSG_ID_DG_HD_COMMUNICATION_STATUS
 void handleTestHDCommunicationStatusOverrideRequest( MESSAGE_T *message );
 
 // MSG_ID_DG_SET_PRIMARY_AND_TRIMMER_HEATERS_TARGET_TEMP
 void handleSetPrimaryAndTrimmerHeatersTargetTemperature( MESSAGE_T *message );
 
+// MSG_ID_DG_USED_ACID_VOLUME_ML_OVERRIDE
+void handleTestUsedAcidVolumeMLOverrideRequest(MESSAGE_T *message);
+
+// MSG_ID_DG_USED_BICARB_VOLUME_ML_OVERRIDE
+void handleTestUsedBicarbVolumeMLOverrideRequest(MESSAGE_T *message);
+
 // MSG_ID_DG_GET_USAGE_INFO_RECORD
 void handleGetDGUsageInfoRecord( MESSAGE_T *message );
 
 // MSG_ID_DG_SET_USAGE_INFO_RECORD
 void handleSetDGUsageInfoRecord( MESSAGE_T *message );
 
-// MSG_ID_HD_REQUEST_DG_ALARMS
-void handleResendAllAlarmsCommand( MESSAGE_T *message );
-
 // MSG_ID_DG_SET_OP_MODE_REQUEST
 void handleTestSetOpModeRequest( MESSAGE_T *message );