Patent ID: 8571020
Filing Date: 2013-10-29
Classification: H04L

Abstract:
1. A Session Initiation Protocol (SIP)-based Voice over Internet Protocol (VoIP) system, comprising: a SIP call server and a SIP terminal; the SIP call server to transmit a user information request message to the SIP terminal to request a Media Access Control (MAC) address of the SIP terminal upon receipt of a first registration request message from the SIP terminal, to register the SIP terminal and store the MAC address to be matched to the registered SIP terminal upon receipt of a second registration request message comprising the MAC address from the SIP terminal, and to transmit a response message to the SIP terminal; and the SIP terminal, upon receipt of the user information request message after transmission of the first registration request message, to analyze the user information request message to determine whether the MAC address is requested, and to transmit the MAC address of the SIP terminal in the second registration request message to the SIP call server in response to a determination that the MAC address is actually requested.