VOICE ONLY IP SYSTEM FOR USING SESSION INITIATION PROTOCOL AND SESSION INITIATION PROTOCOL TERMINAL REGISTER METHOD TO THEREOF

摘要

A Session Initiation Protocol (SIP) based Voice over Internet Protocol (VoIP) system, upon receipt of a first registration request message from an SIP terminal, transmits a user information request message to the SIP terminal to request a Media Access Control (MAC) address of the SIP terminal, and upon receipt of a second registration request message including the MAC address from the SIP terminal, registers the SIP terminal and stores the MAC address to be matched to the registered SIP terminal, and then transmits a response message to the SIP terminal. The SIP based VoIP system improves a registration authentication process for the SIP terminal in the VoIP system using standard SIP so that the SIP server can effectively manage SIP terminals which are gradually increasing in number.