| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To facilitate an operation for registering an SIPURL to an SIP server to make an extension telephone set in a system individually terminate from an SIP telephone set. <P>SOLUTION: A key telephone system is equipped with a main device 10 which accommodates a plurality of extension telephone sets 11, the SIP server 30, and the SIP telephone set 40 through a LAN line 20. The SIP server 30 registers SIP URLs of the main device 40 and SIP telephone set 40. The SIP telephone set 40 sets the SIP URL of the main device 10 and the user name of a specified extension telephone set 40 in the To header of an INVITE message and sends the message to the main device 10 through the SIP server 30. The main device 10 relates and registers the plurality of extension telephone sets 40 and their user names in a data table, takes a user name out of a To header when an INVITE message is received, and individually calls the extension telephone set 11 corresponding to the user name. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
