--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/SystemStateMonitor/Api/sipsystemstateobserver.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,54 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+* Name          : sipsystemstateobserver.h
+* Part of       : SIP
+* Version       : SIP/6.0 
+*
+*/
+
+
+
+#ifndef MSIPSYSTEMSTATEOBSERVER_H
+#define MSIPSYSTEMSTATEOBSERVER_H
+
+// INCLUDES
+#include "sipsystemstatemonitor.h"
+#include <e32std.h>
+
+// CLASS DECLARATION
+/**
+* @publishedPartner
+* @released
+*
+* Callback to receive notifications about changes 
+* in the values of system variables.
+*/
+class MSipSystemStateObserver
+	{
+	public:
+
+		/**
+		* The value of a system variable has changed.
+		* @param aVariable the identifier of a system variable that has changed
+        * @param aObjectId identifies the monitored object		
+		* @param aValue the value of the variable
+		*/
+		virtual void SystemVariableUpdated( 
+		    CSipSystemStateMonitor::TSystemVariable aVariable,
+		    TInt aObjectId,
+		    TInt aValue ) = 0;
+	};
+
+#endif // MSIPSYSTEMSTATEOBSERVER_H