SIP TERMINAL CONTROL SYSTEM

摘要

There is provided a SIP terminal control system capable of reporting a download request, an upgrade request, and an upload request from an IP network side to each terminal without requiring its own database for managing the IP address of each terminal or its own authentication mechanism for authentication of each terminal for terminal control. The SIP terminal control system reports various requests such as a download request, an upload request, and an upgrade request to a SIP terminal from an IP call control device (41) accommodating the SIP terminal by using the SIP, so that a database managing the IP address of each terminal and an authentication mechanism for performing authentication can utilize the existing function of the IP call control device (41) and access the SIP terminal over the firewall by using the SIP.