SYSTEM AND METHOD FOR PROVIDING TERMINAL MOBILITY IN H.323 SYSTEMS

摘要

A telecummunications system and method is disclosed for providing for terminal mobility between H.323 networks belonging to the same H.323 system. When an H.323 mobile terminal moves to a new or visitor H.323 network and attempts to register with the visitor H.323 network, the visitor H.323 network informs the home H.323 network to which the H.323 mobile terminal belongs about the move, using an H.225 Registration and Admission Control Signaling (RAS) message. In order to send such a location update RAS message to the home H.323 network, the visitor Gatekeeper determines the home Gatekeeper of the visiting H.323 mobile terminal. Thereafter, the RAS message is sent by the Gatekeeper of the visitor H.323 network to the Gatekeeper of the home H.323 network through routers and the LAN backbones of the H.323 networks of the H.323 system.