Method and System for Implementing of Push-to-Talk Service by Using SIP and SDB for Use in Mobile Data Communication Network

摘要

The present invention provides a PTT service method using a SIP and SDB to efficiently provide a PTT service by reducing the call setup time required for PTT transmission and PTT reception using the SDB in the SIP-based PTT service system of the CDMA 2000 mobile communication data network; It's about the system.;In order to realize the present invention, the present invention calls a PTT terminal for incoming / outgoing calls, a SIP server for the conversion and processing of messages, a mobile communication network connecting the PTT terminal and the SIP, a PDSN, an MRC for copying the caller's voice, and a PTT member to speak. It includes a PTT server to manage and a presence server for displaying the status change information of the PTT service subscriber.;According to the present invention, in the SIP-based PTT service system of the CDMA 2000 mobile data network, the SDB is used to reduce the traffic generated in the network by reducing the call setup time required for PTT transmission and PTT reception, as well as PTT service. It is possible to provide a satisfactory service to PTT service subscribers by providing certainty of promptness and immediate connectivity.;PTT, SIP, SDP, group call, selective call, presence, MRC, call setup method, binary message