DEVICE FOR COMPREHENSIVELY DECIDING SERVICE DOMAIN AND ACCESS DOMAIN, AND ROUTING CALLING METHOD

摘要

A device for comprehensively deciding a service domain and an access domain, and a voice over long term evolution (VoLTE) routing calling method. The method comprises: when a terminal calls in from a CS network or an LTE/IMS network, if the device for comprehensively deciding the service domain and the access domain determines that the terminal is in a double registration mode, executing a T-ADS flow decision access domain, thereby realizing the unity of the service domain and the access domain.