METHOD AND SYSTEM FOR REALIZING SESSION HANDOVER

摘要

The present invention provides a method for realizing session transfer, comprising: a service continuity application server (SCC AS), after receiving a session transfer request, when judging that a state of a session needed to be transferred is in a held state, updating a remote leg by using a held state session state information, and notifying an enhanced mobile switching center (eMSC) that the state of the session needed to be transferred is the held state; and the eMSC completing a call setup of a target access network according to the held state. The present invention also provides a system for realizing session transfer. The present invention can realize correct transfer of a held state voice session, realize correct service logic and improve user experience.