--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/callcontinuity/vcchotrigger/inc/vccsignallevelobserver.h	Mon Jan 18 20:12:36 2010 +0200
@@ -0,0 +1,79 @@
+/*
+* Copyright (c) 2007-2007 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:   Definition of a signal level observer API
+*
+*/
+
+
+
+#ifndef VCCSIGNALLEVELOBSERVER_H
+#define VCCSIGNALLEVELOBSERVER_H
+
+#include <e32base.h>
+#include <wlanmgmtcommon.h>
+
+class CVccSignalLevelHandler;
+
+/**
+ *  Defines the API for the signal level observer
+ *
+ *
+ *  @code
+ *   ?good_class_usage_example(s)
+ *  @endcode
+ *
+ *  @lib vcchotrigger.dll
+ *  @since S60 v3.2
+ */
+class MVccSignalLevelObserver
+    {
+public:
+
+    /** Signal RSS class */
+    enum TSignalStrengthClass
+        {
+        /** Received signal level is 'normal'. */
+        ESignalClassNormal,
+        /** Received signal level is 'weak'. */
+        ESignalClassWeak,
+        /** Signal strength is not known yet, no handover. */
+        ESignalClassUndefined
+        };
+
+    /**
+     * WLAN signal level has been changed.
+     *
+     * @since S60 3.2
+     * @param aRSS level in absolute dBm values.
+     * @param aRssClass specifies the current class of the received signal.
+     * @return ?description
+     */
+    virtual void WlanSignalChanged(
+            TInt32 aSignalStrength,
+            TSignalStrengthClass aClass ) =  0;
+
+    /**
+     * GSM signal level has been changed.
+     *
+     * @since S60 3.2
+     * @param aRSS level in absolute dBm values.
+     * @param aRssClass specifies the current class of the received signal.
+     */
+    virtual void GsmSignalChanged(
+            TInt32 aSignalStrength,
+            TSignalStrengthClass aClass ) =  0;
+
+    };
+
+#endif // VCCSIGNALLEVELOBSERVER_H