--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonesrv_plat/converged_call_provider_api/inc/mccpconferencecallobserver.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,132 @@
+/*
+* Copyright (c) 2006 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:  CCP Conference Call observer
+*
+*/
+
+
+#ifndef MCCPCONFERENCECALLOBSERVER_H
+#define MCCPCONFERENCECALLOBSERVER_H
+
+class MCCPCall;
+
+// INCLUDES
+#include <e32base.h>
+
+#include <ccpdefs.h> // conference call error defenitions
+
+/**
+* CCP API call ConferenceCall observer class
+*
+*  @since S60 3.2
+*/
+class MCCPConferenceCallObserver
+    {
+public: 
+    enum TCCPConferenceCallEvent
+       {
+       /** Conference call added. */
+       ECCPConferenceCallAdded,
+       /** Conference call removed */
+       ECCPConferenceCallRemoved,
+       /** Names of the two calls used to build the conference call returned in aCallName. */
+       ECCPConferenceBuilt,
+       /** No name provided */
+       ECCPConferenceTerminated,
+       /** No name provided. */
+       ECCPConferenceSwapped,
+       /** Name of the call being seperated. */
+       ECCPConferenceSplit
+       };
+
+
+    /** Conference call status. */
+    enum TCCPConferenceCallState
+       {
+       /** The conference call is in the idle state. */
+       ECCPConferenceIdle,
+       /** The conference call is in the active, connected state. */
+       ECCPConferenceActive,
+       /** The conference call is in the held, connected state. */
+       ECCPConferenceHold,
+       };
+
+    /** Conference call capabilities. */
+    enum TCCPConferenceCallCaps
+      {
+      /** Indicates that a conference call can be created. */
+      ECCPCapsCreate = 0x00000001,
+      /** Indicates that a conference call can be terminated. */
+      ECCPCapsHangUp = 0x00000002,
+      /** Indicates that a conference call exists and can be swapped to the opposite 
+      state (active or hold). */
+      ECCPCapsSwap = 0x00000004
+      };
+
+
+
+protected:
+    /** 
+    * Protects the observer being deleted through the observer interface 
+    * @since S60 3.2
+    */
+    virtual inline ~MCCPConferenceCallObserver() {};
+    
+public:
+
+    /**
+    * The state of the conference call has changed.
+    * @since S60 3.2
+    * @param aState Conference call state.
+    * @return none
+    */
+    virtual void ConferenceCallStateChanged( 
+                 const MCCPConferenceCallObserver::TCCPConferenceCallState aState ) = 0;
+
+    /**
+    * A ConferenceCall event has occurred.
+    * @since S60 3.2
+    * @param aEvent Occurred event.
+    * @param aReferredCall Pointer to call that the event refers to. 
+    * Used e.g. for 
+    * MCCPConferenceCall::AddCallL and 
+    * MCCPConferenceCall::RemoveCallL
+    * Default value is NULL.
+    * @return none
+    */
+    virtual void ConferenceCallEventOccurred( 
+                 const MCCPConferenceCallObserver::TCCPConferenceCallEvent aEvent,
+                 MCCPCall* aReferredCall=NULL ) = 0;
+                 
+    /**
+    * Notifies changed conference call capabilities.
+    * @since S60 3.2
+    * @param aCaps New capabilities for the conference call.
+    * @return none
+    */
+	virtual void ConferenceCallCapsChanged( 
+	             const MCCPConferenceCallObserver::TCCPConferenceCallCaps aCaps ) = 0;
+    
+    /**
+    * An error has occurred concerning a conference call.
+    * @since S60 3.2
+    * @param aError Error code.
+    * @return none
+    */
+    virtual void ErrorOccurred( TCCPConferenceCallError aError ) = 0;
+    };
+
+#endif // MCCPCONFERENCECALLOBSERVER_H
+
+// End of File