--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappsrv_plat/multimedia_comms_api/inc/mcedtmfobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,88 @@
+/*
+* Copyright (c) 2007 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:    
+*
+*/
+
+
+
+
+#ifndef MMCEDTMFOBSERVER_H
+#define MMCEDTMFOBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CMceSession;
+class CMceAudioStream;
+class CMceMediaSource;
+
+// CLASS DECLARATION
+
+/**
+*  An interface to be implemented by users of MCE if they wish to receive
+*  DTMF related notifications.
+*
+*  @lib mceclient.lib
+*/
+class MMceDtmfObserver
+    {    
+    public:
+    
+        enum TMceDtmfEvent
+            {
+            EDtmfSendStarted,
+            EDtmfSendCompleted
+            };
+    
+    public: // New functions
+
+        /**
+        * Incoming DTMF tone received.
+        * @param aSession Session that tone was received.
+        * @param aStream Stream that tone was received.
+        * @param aTone Received tone.
+        */
+        virtual void DtmfToneReceived( CMceSession& aSession,
+                                       CMceAudioStream& aStream,
+                                       const TChar& aTone ) = 0;
+        
+        /**
+        * DTMF event received.
+        * @param aSession Session that event was received.
+        * @param aStream Stream that event was received.
+        * @param aSource Source that event was received.
+        * @param aEvent Received event.
+        */
+        virtual void DtmfEventReceived( CMceSession& aSession,
+                                        CMceAudioStream& aStream,
+                                        CMceMediaSource& aSource,
+                                        TMceDtmfEvent aEvent ) = 0;
+                                      		
+        /**
+        * DTMF error occured. If error occurs, DTMFs becomes
+        * unavailable for that source.
+        * @param aSession Session that event was received.
+        * @param aStream Stream that event was received.
+        * @param aStream Stream that event was received.
+        * @param aError Error code.
+        */
+        virtual void DtmfErrorOccured( CMceSession& aSession,
+                                       CMceAudioStream& aStream,
+                                       CMceMediaSource& aSource,
+                                       TInt aError ) = 0;
+    };
+
+#endif