SYSTEM AND METHOD FOR MANAGING CALL ROUTING IN A NETWORK ENVIRONMENT INCLUDING IMS

摘要

A call routing management system of a network environment including an IMS(IP Multimedia Subsystem) and a method therefor are provided to be capable of managing the call routing without loss of information in the network environment including an IMS network and a CS(Circuit Switched) network. A serving CCCF(Call Continuity Control Function) network node(308) disposed to an IMS network dynamically allocates an IMRN(IP Multimedia Routing Number) selected from an IMRN pool, and the dynamically allocated IMRN is mapped with a number of a receiving side(310-316). The dynamically allocated IMRN is provided to a UE(User Equipment)(302) from the CCCF network node. A call is routed to the receiving side by using the dynamically allocated IMRN.