diff -r 7d48bed6ce0c -r 987c9837762f convergedcallengine/csplugin/inc/cspdtmfprovider.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/convergedcallengine/csplugin/inc/cspdtmfprovider.h	Wed Sep 01 12:15:03 2010 +0100
@@ -0,0 +1,191 @@
+/*
+* Copyright (c) 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:  Header of CSPDTMFProvider which provides DTMF functionality.
+*
+*/
+
+
+#ifndef CSPDTMFPROVIDER_H
+#define CSPDTMFPROVIDER_H
+
+
+#include <e32base.h>
+#include <mccpdtmfprovider.h>
+#include <mccpdtmfobserver.h>
+
+
+class RMobilePhone;
+class CSPEtelDtmfMonitor;
+class CSPEtelDtmfStopMonitor;
+class RMmCustomAPI;
+
+/**
+* Makes asynchronic request to ETel interface according to given request type.
+* Provides canceling via CActive::Cancel().
+* 
+*/
+class CSPDTMFProvider: public CActive,
+                       public MCCPDTMFProvider        
+    {
+        
+    public:
+    
+        /**
+        * Two phased constructing of the DTMF provider instance.
+        * @param aPhone mobile phone handle
+        * @param aMmCustom custom API handle for special DTMF event 
+        *        monitoring.
+        * @return the DTMF provider instance
+        */
+        static CSPDTMFProvider* NewL( RMobilePhone& aPhone, 
+                                      RMmCustomAPI& aMmCustom );
+        
+        
+        /**
+        * C++ default destructor
+        */
+        virtual ~CSPDTMFProvider( );
+        
+        /**
+        * HandleDTMFEvents.
+        * @since S60 3.2
+        * @param aEvent Event type
+        * @param aError Error code
+        * @param aTone Character
+        */
+        void NotifyDTMFEvent( const MCCPDTMFObserver::TCCPDtmfEvent aEvent,
+                              const TInt aError,
+                              const TChar aTone );
+
+        
+// from base class MCCPDTMFProvider
+        /**
+        * Cancels asynchronous DTMF string sending.
+        * @return KErrNone if succesfull, otherwise another system wide error code
+        */
+        TInt CancelDtmfStringSending();
+
+        /**
+        * Starts the transmission of a single DTMF tone across a
+        * connected and active call.
+        * @param aTone Tone to be played.
+        * @return KErrNone if succesfull, otherwise another system wide error code
+        */
+        TInt StartDtmfTone( const TChar aTone );
+
+        /**
+        * Stops playing current DTMF tone.
+        * @return KErrNone if succesfull, otherwise another system wide error code
+        */
+        TInt StopDtmfTone();
+
+        /**
+        * Plays DTMF string.
+        * @param aString String to be played.
+        * @return KErrNone if succesfull, otherwise another system wide error code
+        * KErrArgument if the specified string contains illegal DTMF characters
+        */
+        TInt SendDtmfToneString( const TDesC& aString );
+
+        /**
+        * Continue or cancel sending DTMF string which was stopped with 'w'-character
+        * in string.
+        * @param aContinue ETrue if sending of the DTMF string should continue,
+        * EFalse if the rest of the DTMF string is to be discarded.
+        * @return KErrNone if succesfull, otherwise another system wide error code
+        */
+        TInt ContinueDtmfStringSending( const TBool aContinue );
+
+        /**
+        * Add an observer for DTMF related events.
+        * Plug-in dependent feature if duplicates or more than one observers 
+        * are allowed or not. Currently CCE will set only one observer.
+        * @since S60 v3.2
+        * @param aObserver Observer
+        * @leave system error if observer adding fails
+        */
+        void AddObserverL( const MCCPDTMFObserver& aObserver );
+
+        /**
+        * Remove an observer.
+        * @since S60 v3.2
+        * @param aObserver Observer
+        * @return KErrNone if removed succesfully. KErrNotFound if observer was not found.
+        * Any other system error depending on the error.
+        */
+        TInt RemoveObserver( const MCCPDTMFObserver& aObserver );
+            
+// from base class CActive
+    protected:
+        /**
+        * From CActive
+        * RunL
+        * @since S60 3.2
+        */
+        void RunL();
+        
+        /**
+        * From CActive
+        * Cancels the monitor
+        * @since S60 3.2
+        */
+        void DoCancel();  
+
+        
+    private:
+        /**
+        * Constructs the requester.
+        *
+        * @param aPhone handle to ETel phone
+        * @param aMmCustom custom API handle
+        */
+        CSPDTMFProvider( RMobilePhone& aPhone, RMmCustomAPI& aMmCustom );
+        
+        /**
+        * Constructing the provider in the second phase.
+        */
+        void ConstructL();
+    
+    private: // data
+    
+        /**
+        * DTMF event observer.
+        */
+        RPointerArray<MCCPDTMFObserver> iObservers;
+        
+        /**
+        * ETel phone handle for DTMF functionality.
+        */
+        RMobilePhone& iPhone;
+        
+        /**
+        * Monitor for DTMF events and changes.
+        * Own.
+        */
+        CSPEtelDtmfMonitor* iMonitor;
+
+        /**
+        * Monitor for DTMF stopping.
+        * Own.
+        */
+        CSPEtelDtmfStopMonitor* iStopMonitor;
+        
+        /**
+        * Custom API reference.
+        */
+        RMmCustomAPI& iMmCustom;
+        
+    };
+    
+#endif // CSPDTMFPROVIDER
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