| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communication system capable of linking the name resolution processing of an SIP server and a DNS server together and efficiently executing the name resolution processing. <P>SOLUTION: The communication system links the SIP server for managing the positional information of a user client to the DNS server for interconverting a host name and an Ip address and executes the name resolution processing. The SIP server comprises: a user position information storage means for associating an SIP URI with the IP address and storing them; a request reception means for receiving a URI registration request including the SIP URI, the IP address and the host name from the user client; a user position information registration means for associating the SIP URI with the IP address included in the URI registration request and registering them in the user position information storage means; and a request transmission means for transmitting a host name registration request including the IP address and the host name included in the URI registration request to the DNS server for interconverting the host name and the IP address. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
