SYSTEM FOR SUPPLYING COMMON COMMUNICATION NETWORK ENVIRONMENT FOR ADDITIONAL SERVICE BY USING CALL WAITING TONE TIME AND METHOD THEREFOR

摘要

PURPOSE: A system for supplying a common communication network environment for an additional service by using a call waiting tone time is provided to cancel a connection with the first voice channel, and to set the second voice channel between the first user terminal and the second user terminal, thereby supplying an additional service by using a call waiting tone time. CONSTITUTION: An O_PCX(Originated PCX switching system)(120) senses an originating signal transmitted from the first user terminal(110). An intelligent network subscriber management system decides type information of an additional service, and supplies service routing information to an SSP(130). The SSP(130) transmits a voice channel setup request to a CNSR(Common Network System for value added services using Ring-back tone time)-IP(Intelligent Peripheral)(152) by using the service routing information. A CNSR-SCP(Service Control Point)(154) extracts a service code corresponding to the type information, and supplies the code to the CNSR-IP(152). The CNSR-IP(152) delivers the service code and a service data file to the first user terminal(110) through the first voice channel. A T_PCX(Terminated PCX switching system)(125) senses a response signal transmitted from the second user terminal. The CNSR-IP(152) cancels a connection of the first voice channel. The second voice channel for calling between the first user terminal(110) and the second user terminal is set.