--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneengine/callhandling/inc/cpedtmfhandling.h	Mon Jan 18 20:18:27 2010 +0200
@@ -0,0 +1,159 @@
+/*
+* Copyright (c) 2002-2007 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:  This file contains the header file of the CPEDtmfHandling class.
+*
+*/
+
+
+
+#ifndef CPEDTMFHANDLING_H
+#define CPEDTMFHANDLING_H
+
+//INCLUDES
+#include <pevirtualengine.h>
+#include <mccedtmfobserver.h>
+
+//CONSTANTS
+//None.
+
+// MACROS
+//None.
+
+// DATA TYPES
+//None.
+
+// FUNCTION PROTOTYPES
+//None.
+
+// FORWARD DECLARATIONS
+class CPECallHandling;
+class MCCEDtmfInterface;
+class CCCE;
+
+// CLASS DECLARATION
+
+/**
+*  Handles dtmf commands.
+*
+*  @lib callhandling.lib
+*  @since Series60_4.0
+*/
+class CPEDtmfHandling : public CBase,
+                        public MCCEDtmfObserver
+    {
+    public: //Constructors and descructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        IMPORT_C static CPEDtmfHandling* NewL( 
+            CPECallHandling& aOwner, 
+            MCCEDtmfInterface& aDtmfInterface );
+
+        /**
+        * Destructor.
+        */
+        virtual IMPORT_C ~CPEDtmfHandling();
+
+    protected:  //Constructors and descructor
+        /**
+        * C++ default constructor.
+        */
+        IMPORT_C CPEDtmfHandling( 
+            CPECallHandling& aOwner, 
+            MCCEDtmfInterface& aDtmfInterface );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        virtual IMPORT_C void ConstructL();
+
+    public: // From MCCEDtmfObserver
+                                       
+        /**
+        * All the occurred DTMF events are notified through this interface
+        *
+        * @since S60 3.2
+        * @param aEvent Event code
+        * @param aError Error code
+        * @param aTone tone 
+        * @return none
+        */
+        IMPORT_C void HandleDTMFEvent( const MCCEDtmfObserver::TCCEDtmfEvent aEvent, 
+                                       const TInt aError, 
+                                       const TChar aTone );
+                   
+    public: // New functions
+
+        /**
+        * Cancels Dtmf String sending
+        * @since Series60_4.0
+        * @param  None.
+        * @return None.
+        */
+        void CancelDtmfString();
+
+        /**
+        * Allows a client to continue the sending of a dtmf string when it was
+        * stopped by use of 'w' char in the string
+        * @since Series60_4.0
+        * @param  None.
+        * @return None.
+        */
+        void ContinueDtmfSending();
+
+        /**
+        * Send dtmf string to the etel 
+        * @since Series60_4.0
+        * @param  aTones dtmf string
+        * @return None.
+        */
+        TInt SendDtmfString( const TDesC& aTones );
+
+        /**
+        * allows a client initiate the sending of a DTMF tone
+        * @since Series60_4.0
+        * @param  aTone dtmf tone
+        * @return None.
+        */
+        TInt StartDtmfTone( const TChar& aTone ) const;
+
+        /**
+        * Allows a client to cancel the sending of a dtmf string when it was 
+        * stopped by use of 'w' char in the string
+        * @since Series60_4.0
+        * @param  None.
+        * @return None.
+        */
+        void StopDtmfSending();
+
+        /**
+        * allows a client terminate the sending of a DTMF tone
+        * @since Series60_4.0
+        * @param  None.
+        * @return None.
+        */
+        TInt StopDtmfTone() const;
+
+    protected:
+    
+        // CPECallHandling object which owns this Sender
+        CPECallHandling& iOwner;
+        // MCCEDtmfInterface& object which make dtmf requests to the mmetel.
+        MCCEDtmfInterface& iDtmfInterface;
+};
+
+#endif // CPEDTMFHANDLING_H
+
+// End of File