What codec are you using to asterisk and what codec to VPC? Also does this occur if you test the service with another ITSP (nufone/voipjet/teliax....) _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users