diff -r c84cf270c54f -r 8871b09be73b phoneengine/callhandling/inc/cpecallhandling.h
--- a/phoneengine/callhandling/inc/cpecallhandling.h	Tue Feb 02 00:10:04 2010 +0200
+++ b/phoneengine/callhandling/inc/cpecallhandling.h	Fri Feb 19 22:50:26 2010 +0200
@@ -432,6 +432,13 @@
         * @return Error (KErrNone is success).
         */
         IMPORT_C TInt ForwardCallToAddress( TInt aIndex );
+        
+        /**
+        * Makes HangUp requests for conference call. 
+        * @return Error (ECCPErrorNotFound if there is not a conference call 
+        * 
+        */
+        IMPORT_C TInt ReleaseConference();
 
     public: // From MPECallHandling - DTMF related
         /**