Voice session termination for messaging clients in IMS

摘要

An IMS structure is described that hosts an IMS service based on a Rich Communication Suite (RCS) protocol for messaging only and IMS service based on VoLTE or Voice over WiFi. The IMS comprises functionality for rerouting a VoLTE or VoWiFi session invitation to a subscriber via a circuit switched network based on determined capabilities and authorizations of the invited subscriber.