METHOD AND APPARATUSES FOR MAINTAINING SERVICE CONTINUITY TO A CENTRALIZATION AND CONTINUITY APPLICATION SERVER

摘要

590744 Disclosed is a method of maintaining service continuity for User Equipment accessing an IP Multimedia Subsystem communication network. The method includes establishing a routing identifier that identifies a Service Centralisation and Continuity Application Server allocated to the User Equipment. The method also includes sending the routing identifier to the User Equipment and in the event of disruption to the service between the User Equipment and the Service Centralisation and Continuity Application Server, sending a handover message from the User Equipment via a Circuit Switched access network. The handover message includes the routing identifier. The method further includes forwarding the handover message to the identified Service Centralisation and Continuity Application Server.