diff -r 7d48bed6ce0c -r 987c9837762f convergedcallengine/csplugin/inc/mcspaudiostreamobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/convergedcallengine/csplugin/inc/mcspaudiostreamobserver.h	Wed Sep 01 12:15:03 2010 +0100
@@ -0,0 +1,49 @@
+/*
+* Copyright (c) 2006 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:  Observer interface for getting information on audio streams.
+*
+*/
+
+
+#ifndef MCSPAUDIOSTREAMOBSERVER_H
+#define MCSPAUDIOSTREAMOBSERVER_H
+
+/**
+ *  Observer interface for getting information of audio streams.
+ *
+ */
+NONSHARABLE_CLASS( MCSPAudioStreamObserver )
+    {
+
+public:
+
+    /**
+     * Indication that audio streams has been started. 
+     *
+     */
+    virtual void AudioStreamsStarted() = 0;
+    
+    /**
+     * Indication that audio streams will be closed.
+     *
+     * Client can do operations affected to streams from this method,
+     * but after this method the streams will be closed.
+     *
+     */
+    virtual void AudioStreamsGoingToStop() = 0;
+
+    };
+
+
+#endif // MCSPAUDIOSTREAMOBSERVER_H