--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/ProfileAgent/IMS_Agent/Inc/sipregeventsubscriberobserver.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,100 @@
+/*
+* Copyright (c) 2005-2009 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:
+* Name        : sipregeventsubscriberobserver.h
+* Part of     : SIP Profile Agent
+* implementation
+* Version     : 1.0
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+#ifndef MSIPREGEVENTSUBSCRIBEROBSERVER_H
+#define MSIPREGEVENTSUBSCRIBEROBSERVER_H
+
+#include <e32std.h>
+
+// FORWARD DECLARATIONS
+class CSIPRegInfoElement;
+
+// CLASS DECLARATION
+
+/**
+* This call back is used for notifying about changes in registration state
+* event subscription state.
+*
+*  @lib n/a
+*/
+class MSIPRegEventSubscriberObserver
+	{
+    public: // New functions
+            
+		/**
+		* Subscription was sent and an error occured.
+		*/
+		virtual void SubscriptionFailedL() = 0;
+		
+		/**
+		* Subscription was sent and an error occured.
+		* A new subscription should be tried after the given interval.
+		* Subscription state should be indicated as active.   
+		*
+		* @param aRetryAfter the time after which the subscription retried.
+		*/
+		virtual void SubscriptionFailedL(TInt aRetryAfter) = 0;		
+		
+		/**
+		* Subscription was sent and a response was received that indicated
+		* that the reg-event is not supported.
+		*/		
+		virtual void RegEventNotSupportedByNetworkL() = 0;
+		
+		/**
+		* A new initial registration must be performed.
+		*/		
+		virtual void ReRegister() = 0;		
+		
+		/**
+		* A notification for the registration state event was received. 
+		*
+		* @param aNotifyData a parsed registration state data.
+		*/
+		virtual void NotifyReceivedL(CSIPRegInfoElement& aNotifyData) = 0;
+		
+		/**
+		* A notification for the registration state event was received
+		* indication the subscription has terminated.
+		* In practice Subscription-State header was set to terminated.
+		* This means the current instance of CSIPRegEventSubscriber 
+		* should be deleted and a new one should be created and subscribed
+		* after the interval indicated in aRetryAfter parameter. 
+		*
+		* @param aNotifyData a parsed registration state data.
+		* @param aRetryAfter the subscription should be tried again after
+		*        the given time in seconds. 
+		*        Negative value: The subscription must not be retried. 
+		*        Zero value: The subscription can be tried immediately.
+		*        Positive value: Try again after this interval.       
+		*/
+		virtual void TerminatedL(CSIPRegInfoElement& aNotifyData,
+		                         TInt aRetryAfter) = 0;				
+	};
+
+#endif