--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/IMPSengine/enginc/ImpsBearerObserverCallback.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,59 @@
+/*
+* Copyright (c) 2003 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: A connection manager object uses this callback function to indicate
+* that a change in the status of the bearer has occurred.
+*
+*/
+
+
+#ifndef __IMPSBEAREROBSERVERCALLBACK_H__
+#define __IMPSBEAREROBSERVERCALLBACK_H__
+
+#include <e32base.h>
+
+//This must be kept as low as possible
+const TInt KMaxNumberOfSubscribers         = 3;
+
+//Possible events
+enum TImpsBearerEvent
+    {
+    EImpsBearerActive = 0,
+    EImpsBearerSuspended,
+    EImpsBearerLost
+    };
+
+// CLASS DECLARATION
+
+class MImpsBearerObserverCallback
+    {
+    public:
+
+        /**
+        * A connection manager object uses this callback function to indicate
+        * that a change in the status of the bearer has occurred. It is important
+        * to note that a call to the notification handler (HandleBearerEventL())
+        * takes place inside the RunL() method of a Connection Manager, so the
+        * listening object MUST return the control to the Manager AS SOON AS
+        * POSSIBLE in order not to clog the scheduler.
+        *
+        * @param TImpsBearerEvent The event that took place
+        * @param TBool In case of EImpsBearerLost, indicates whether connection
+        *              was authoritatively closed (i.e. by the user)
+        */
+        virtual void HandleBearerEventL( const TImpsBearerEvent aBearerEvent, TBool aIsAuthClose ) = 0;
+    };
+
+#endif    // __IMPSBEAREROBSERVERCALLBACK_H__
+
+// End of File