Patent ID: 8279832
Filing Date: 2012-10-02
Classification: H04L,H04M

Abstract:
1. A method for converting session control signaling, comprising: performing a signaling conversion, by a first adaptation unit, between a session control signaling message of a circuit switched (CS) session leg and a session control signaling message of an IP multimedia subsystem (IMS) session leg, wherein the first adaptation unit is on a CS signaling path after a cross mobile switching center (MSC) handover; wherein: the first adaptation unit is on an initial session processing node; an after-handover session processing node exists on a signaling path between the first adaptation unit and user equipment (UE), wherein the initial session processing node and the after-handover session processing node are located in different mobile switching centers (MSCs); the session control signaling message of the CS session leg connected to the first adaptation unit is an E-interface signaling message; and the session control signaling message of the IMS session leg connected to the first adaptation unit is a Session Initiation Protocol (SIP) signaling message.