| 摘要 |
A method for switching a session of an IP Multimedia Subsystem (IMS) network and an Emergency Access Transfer Function (EATF) entity are disclosed. The method includes: the EATF entity anchoring a call sent by a network element in a call initiation domain, and routing the call to an Emergency-Call Session Control Function (E-CSCF); the EATF entity receiving call transfer invite message sent by a network element in a call termination domain; and if identifying that the call transfer invite message is an invite message inviting to perform transfer of the call, the EATF entity performing media negotiation, and sending a response message carrying media information to the network element in the call termination domain. |
