Special termination mobile announcement, for wireless VoIP customized ring back tone service

摘要

In a communications network that provides customized ring back tone (CRBT) service to voice over Internet protocol (VoIP) telephone calls, an announcement is played to a called party having CRBT service with VoIP telephony, after the called party answers a ringing signal but before a communications pathway is established between the calling party and the called party. The announcement notifies the called party of an incoming call during the time that a pathway is being set up and which would otherwise be silent.