IMS PTT PTT SYSTEM FOR PROVIDING HALF DUPLEX CALL FULL DUPLEX CALL CONFERENCE CALL AND MESSAGING SERVICES USING IMS NETWORK

摘要

The present invention relates to a PTT system for integrally providing half duplex call, full duplex call, and conference and message services by using an IMS network. The PTT system according to the present invention comprises: a front end server (FES); a plurality of service execution servers (SES); a Media Control Server (MCS); and a plurality of media processing servers (MPS).