diff -r f742655b05bf -r d38647835c2e callcontinuity/vcchotrigger/inc/vcccchobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/callcontinuity/vcchotrigger/inc/vcccchobserver.h	Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,78 @@
+/*
+* Copyright (c) 2008 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:   Definition of a CCH observer API
+*
+*/
+
+
+
+#ifndef VCCCCHOBSERVER_H
+#define VCCCCHOBSERVER_H
+
+#include <e32base.h>
+
+/**
+ *  Observer class for CVccCchMonitor
+ *
+ *  The class that defines observer interfaces.
+ *  Used to get notifications when CCH states changes.
+ *  @code
+ *   class CMyClass : public CBase, public MVccCchObserver
+ *       {
+ *   public:
+ *       ...
+ *       void CchServiceStatusChanged( TServiceStatus aStatus );
+ *       ...
+ *       }
+ *
+ *   void MyClass::CchServiceStatusChanged( TServiceStatus aStatus )
+ *       {
+ *       if ( aStatus == MVccCchObserver::EServiceUnavailable )
+ *           {
+ *           ServiceNotWorking();
+ *           }
+ *       else
+ *           {
+ *           ServiceWorking();
+ *           }
+ *       }
+ *
+ *  @endcode
+ *
+ *  @lib vcchotrigger.lib
+ *  @since S60 v3.2
+ */
+class MVccCchObserver
+    {
+public:
+
+    /**  Service status */
+    enum TServiceStatus
+        {
+        EServiceUnavailable = 0,
+        EServiceAvailable
+        };
+
+    /**
+     * Observer interface. Called when the CCH status has been changed.
+     *
+     * @since S60 v3.2
+     * @param aStatus Status of the service availability.
+     */
+
+    virtual void CchServiceStatusChanged( TServiceStatus aStatus ) = 0;
+
+    };
+
+#endif // VCCCCHOBSERVER_H