-2000 Roaming Service System and Method from Asynchronous Network to Synchronous Network of IMT-2000Using Termination Control System

摘要

PURPOSE: A termination data roaming service system from a WCDMA(Wideband Code Division Multiple Access) network to a CDMA2000 network by using a TCS(Termination Control System) and a method therefor are provided to roam termination data from the asynchronous WCDMA network to the synchronous CDMA2000 network. CONSTITUTION: A DHLR(Dual Home Location Register)(190) manages respective subscriber information of a WCDMA network(100) and a CDMA2000 network(200). A TCS(180) processes calls terminated to a mobile terminal which roams from the WCDMA network(100) to the CDMA2000 network(200), and manages termination information. An SIP(Session Initiation Protocol) server(170) receives a termination message from the TCS(180), and provides the received termination message to the mobile terminal. The first database manages a mapping table as to subscriber information of the synchronous network, The second database manages a mapping table as to subscriber information of the asynchronous network.