diff -r 6aaf0276100e -r c76a0b1755b9 phoneplugins/csplugin/inc/mtmshandlerobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneplugins/csplugin/inc/mtmshandlerobserver.h	Fri Sep 17 08:29:19 2010 +0300
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2010 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
+ *
+ */
+
+#ifndef TMSHANDLEROBSERVER_H
+#define TMSHANDLEROBSERVER_H
+
+/**
+ *  Class observing callbacks from TmsHandler.
+ *
+ */
+class MTmsHandlerObserver
+    {
+public:
+    /**
+     * Indicates successful start of call audio streams.
+     */
+    virtual void AudioStreamsStarted() = 0;
+
+    /*
+     * Indicates an error during audio streams startup.
+     */
+    virtual void AudioStreamsError(TInt aError) = 0;
+    };
+
+#endif // TMSHANDLEROBSERVER_H
+