| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide technology capable of actualizing a call control server function using a plurality of IP telephone terminals. <P>SOLUTION: A plurality of telephone terminals 10 are connected to a LAN 70. A terminal 10-1 in charge of generalization terminating a call to an external network, and each of terminals other than the terminal 10-1 in charge of the generalization has a processing function according to a SIP message in call control server processing, respectively. In addition, the terminal 10-1 in charge of the generalization manages contents of the processing and a status of a terminal in charge other than the terminal 10-1 in charge of the generalization. If the terminal 10-1 in charge of the generalization receives an outgoing call to an external network 60 or an incoming call from the external network 60, the terminal 10-1 in charge of the generalization distributes the processing according to a type of the SIP message. <P>COPYRIGHT: (C)2012,JPO&INPIT |
