diff -r 000000000000 -r ff3b6d0fd310 phonesrv_plat/phone_settings_observer_api/inc/MPsetCallWaitingObs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonesrv_plat/phone_settings_observer_api/inc/MPsetCallWaitingObs.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,79 @@
+/*
+* Copyright (c) 2002 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: 
+*       MPsetCallWaitingObserver abstract call waiting observer class.
+*
+*
+*/
+
+
+#ifndef     MPSETCALLWAITINGOBS_H
+#define     MPSETCALLWAITINGOBS_H
+
+// INCLUDES
+#include <MPsetCallWaiting.h>
+
+//  CLASS DEFINITIONS 
+class   MPsetCallWaitingObserver
+    {
+    public:
+
+        /**
+        * Handles notes when requesting Call Waiting status.
+        *
+        * @param aStatus Query result.
+        * @param aBsc is List of active groups.
+        */
+        virtual void HandleCallWaitingGetStatusL( 
+            const MPsetCallWaiting::TGetCallWaitingStatus aStatus, 
+            TUint8 aBsc[KPSetNumberOfBsc] ) = 0;
+        
+        /**
+        * Handles notes when Call Waiting has been changed.
+        *
+        * @param aSetting Changed setting.
+        * @param aResult Result of the action.
+        */
+        virtual void HandleCallWaitingChangedL( 
+            const MPsetCallWaiting::TSetCallWaiting aSetting, 
+            const TInt aResult ) = 0;
+
+        /**
+        * Handles requesting notes.
+        *
+        * @param aStarted Is there a request going on.
+        * @param aInterrupted Request needs to be immediately cancelled.
+        */
+        virtual void HandleCWRequestingL( TBool aOngoing, 
+            TBool aInterrupted ) = 0; 
+        /**
+        * Handles errors in call waiting requests.
+        *
+        * @param aReason Reason for the error.
+        */
+        virtual void HandleCWErrorL( TInt aReason ) = 0;
+
+        /**
+        * Sets pointer so that message is passed succesfully
+        * from requester to observer.
+        *
+        * @param aEngineContact Source of events to observer.
+        */
+        virtual void SetEngineContact( MPsetCallWaiting& aEngineContact ) = 0;
+
+    };
+
+#endif // MPSETCALLWAITINGOBS_H
+
+// end of file