Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r9a96522e0a94724a13c2c9c8f60cf8d18ebde218 -re190a7eb5fb36d4a0c42e9db709571db3037d39d
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 9a96522e0a94724a13c2c9c8f60cf8d18ebde218)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision e190a7eb5fb36d4a0c42e9db709571db3037d39d)
@@ -63,9 +63,38 @@
 #define ACK_REQUIRED                    TRUE                ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
 #define ACK_NOT_REQUIRED                FALSE               ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
 
-#define ACK_REQUIRED                    TRUE                ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
-#define ACK_NOT_REQUIRED                FALSE               ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
+/// TODO - should this be in HDDefs? MsgDefs or other common?.
+#define CONFIRMATION_REQUEST_TIMEOUT_MS    ( SEC_PER_MIN * MS_PER_SECOND )
+/// List of confirmation status.
+typedef enum Confirmation_Status
+{
+    CONFIRMATION_REQUEST_STATUS_REJECTED = 0,          ///< Confirmation status rejected
+    CONFIRMATION_REQUEST_STATUS_ACCEPTED,              ///< Confirmation status accepted
+    CONFIRMATION_REQUEST_STATUS_TIMEOUT,               ///< Confirmation status timeout
+    CONFIRMATION_REQUEST_STATUS_PENDING,               ///< Confirmation status pending response
+    CONFIRMATION_REQUEST_STATUS_UNUSED,                ///< Confirmation status Unused
+    NUM_OF_CONFIRMATION_REQUEST_STATUS                 ///< Number of confirmation status
+} CONFIRMATION_REQUEST_STATUS_T;
 
+/// List of confirmation status.
+typedef enum Confirmation_Request_Type
+{
+    CONFIRMATION_REQUEST_TYPE_OPEN = 0,                ///< Confirmation type open
+    CONFIRMATION_REQUEST_TYPE_CLOSE_TIMEOUT,           ///< Confirmation type close due to timeout
+    CONFIRMATION_REQUEST_TYPE_REJECT,                  ///< Confirmation type reject
+    CONFIRMATION_REQUEST_TYPE_CLOSE_ACCEPT,            ///< Confirmation type close due to accepted confirm
+    NUM_OF_CONFIRMATION_TYPE                           ///< Number of confirmation types
+} CONFIRMATION_REQUEST_TYPE_T;
+
+/// Structure for confirmation request.
+typedef struct
+{
+    U32 requestID;                                      ///< Request ID
+    CONFIRMATION_REQUEST_TYPE_T requestType;            ///< Request Type
+    U32 timeStamp;                                      ///< Timestamp for request
+    CONFIRMATION_REQUEST_STATUS_T status;               ///< Request status (pending, accepted, rejected)
+} CONFIRMATION_REQUEST_T;
+
 // ********** public function prototypes **********
 
 // Serialize message
@@ -837,6 +866,11 @@
 // MSG_ID_HD_DIAL_OUT_SET_PWM
 void handleTestDialOutSetPWM( MESSAGE_T* message );
 
+// MSG_ID_UI_CONFIRMATION_RESULT
+void handleUIConfirmationResponse( MESSAGE_T *message );
+CONFIRMATION_REQUEST_STATUS_T checkConfirmationRequestStatus( U32 request_id );
+U32 sendConfirmationRequest( CONFIRMATION_REQUEST_TYPE_T request_type, U32 reject_reason );
+
 /**@}*/
 
 #endif