diff -r f742655b05bf -r d38647835c2e sipvoipprovider/inc/svppropertywatchobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sipvoipprovider/inc/svppropertywatchobserver.h	Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,54 @@
+/*
+* Copyright (c) 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:  Observers changes in proverty values
+*
+*/
+
+
+#ifndef M_SVPPROPERTYWATCHOBSERVER_H
+#define M_SVPPROPERTYWATCHOBSERVER_H
+
+/**
+ *  Observer interface for clients being interested in getting notifications
+ *  when Publish&Subscribe property under watching changes.
+ *
+ *  @lib svp.dll
+ *  @since S60 3.2
+ */
+class MSVPPropertyWatchObserver
+    {
+
+public:
+
+    /**
+     * MSVPPropertyWatch calls this when some property under watching was
+     * changed. 
+     *
+     * @since S60 3.2
+     * @param aKey Property which was changed
+     * @param aValue New value of the property
+     */
+     virtual void ValueChangedL( TInt aKey, TInt aValue ) = 0;
+    
+    /**
+     * MccPropertyWatch calls this when property was deleted.
+     *
+     * @since S60 3.2
+     * @param aKey Property which was deleted
+     */
+     virtual void PropertyDeleted( TInt aKey ) = 0;
+
+    };
+
+#endif // M_SVPPROPERTYWATCHOBSERVER_H