Communication system for offering supplementary service with interworking between packet switched network and circuit switched network, packet switched network thereof, server thereof, and method thereof

摘要

The present invention relates to a communication system for providing an additional service by interworking a packet network and a circuit network, a packet network for the same, a server for the same, and a method therefor. The present invention provides a call service according to circuit switching. A circuit network including at least one supplementary service device for storing supplementary service data which is data for providing the supplementary service for each type of supplementary service for a call service according to the circuit switching; And a packet network configured to provide a packet switching-based voice call service to a terminal and to provide an additional service for the packet switching-based voice call to the terminal in association with the additional service device. By providing a communication system, a packet network for this, a server for the same, and a method therefor, it is possible to utilize the database and web resources established to provide additional services in the circuit network, and to maintain continuity and connectivity of the service. Can be.