COMMUNICATION SYSTEM FOR PROVIDING SUPPLEMENTARY SERVICE SYNCHRONIZED BETWEEN PACKET SWITCHED NETWORK AND CIRCUIT SWITCHED NETWORK, PACKET SWITCHED NETWORK THEREOF, SERVER THEREOF, AND METHOD THEREOF

摘要

PURPOSE: A communication system, a packet network for the same, and a method thereof are provided to share a service profile on a packet network and a circuit network and to synchronize the packet network and the circuit network. CONSTITUTION: A circuit network(200) offers an additional service to a terminal(400). A packet network(100) shares a service profile with an HLR(Home Location Register)(210). The packet network synchronizes the state information the shared service profile through the exchange of a message with the HLR. An application server(110) supplies the additional service to the terminal according to synchronized state information.