--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonesrv_plat/converged_call_provider_api/inc/mccpdtmfprovider.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,114 @@
+/*
+* 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 DTMF provider class
+*
+*/
+
+
+#ifndef MCCPDTMFPROVIDER_H
+#define MCCPDTMFPROVIDER_H
+
+//  INCLUDES
+#include <e32base.h>
+
+class MCCPDTMFObserver;
+
+/**
+* DTMF provider.
+* Used to receive errors, notifications, statuses etc
+*
+*  @since S60 3.2
+*/
+class MCCPDTMFProvider
+	{
+protected:
+    /** 
+    * Protected destructor. Object cannot be deleted from plug-in client (CCE).
+    * @since S60 3.2
+    */
+    virtual inline ~MCCPDTMFProvider() {};
+	
+public:
+	/**
+	* Cancels asynchronous DTMF string sending.
+    * @param none
+	* @return KErrNone request was started successfully
+	* @return KErrNotFound nothing found to cancel.
+	* @since Series 60 3.2
+	*/
+	virtual TInt CancelDtmfStringSending() = 0;
+
+	/**
+	* Starts the transmission of a single DTMF tone across a connected and active call.
+	* @since S60 3.2
+	* @param aTone tone to be played.
+	* @return KErrNone request was started successfully
+	* @return KErrArgument if the specified tone contains illegal dtmf character
+	* @return in case of an error system wide error code
+	*/
+	virtual TInt StartDtmfTone( const TChar aTone ) = 0;
+
+	/**
+	* Stops playing current DTMF tone.
+	* @since S60 3.2
+    * @param none
+	* @return KErrNone request was started successfully
+    * @return KErrNotReady not ready to perform the requested action.
+	*/
+	virtual TInt StopDtmfTone() = 0;
+
+	/**
+	* Plays DTMF string.
+	* @since S60 3.2
+	* @param aString String to be played.
+	* @return KErrNone request was started successfully
+	* @return KErrArgument if the specified string contains illegal dtmf characters
+	*/
+	virtual TInt SendDtmfToneString( const TDesC& aString ) = 0;
+
+	/**
+	* Continue or cancel sending DTMF string which was stopped with 'w'-character
+	* in string.
+	* @since S60 3.2
+	* @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 request was started successfully
+	* @return KErrNotFound no send existed which to continue
+	*/
+	virtual TInt ContinueDtmfStringSending( const TBool aContinue ) = 0;
+	
+    /**
+    * Add an observer for DTMF related events.
+    * Currently CCE will set only one observer.
+    * @since S60 v3.2
+    * @param aObserver Observer to add.
+    * @return none
+    * @leave system error if observer adding fails
+    */
+    virtual void AddObserverL( const MCCPDTMFObserver& aObserver ) = 0;
+
+    /**
+    * Remove an observer.
+    * @since S60 v3.2
+    * @param aObserver Observer to remove.
+    * @return KErrNone if removed succesfully. 
+    * @return KErrNotFound if observer was not found.
+    */
+    virtual TInt RemoveObserver( const MCCPDTMFObserver& aObserver ) = 0;
+
+	};
+
+
+#endif // MCCPDTMFPROVIDER_H
+