--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devicediagnosticsfw/diagframework/inc/diagenginecallhandlerobserver.h	Thu Dec 17 09:07:52 2009 +0200
@@ -0,0 +1,38 @@
+/*
+* 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:  Class declaration for MDiagEngineCallHandlerObserver
+*
+*/
+
+
+#ifndef DIAGENGINECALLHANDLEROBSERVER_H
+#define DIAGENGINECALLHANDLEROBSERVER_H
+
+#include "diagenginecallhandlerstates.h"    // TDiagEngineCallHandlerState
+
+class MDiagEngineCallHandlerObserver
+    {
+public:
+    /**
+    * Notify call state change
+    * @param aState - EDiagEngineCallHandlerStateIdle if not in call.
+    *                 EDiagEngineCallHandlerStateBusy if in call.
+    */
+    virtual void CallHandlerStateChangedL( TDiagEngineCallHandlerState aState ) = 0;
+    };
+
+#endif // DIAGENGINECALLHANDLEROBSERVER_H
+
+// End of File
+