| 摘要 |
<p>In order to reduce network loads in a large system, provided is a representative aspect of this invention is as follows. That is, there is provided a SIP server coupled to at least one client via a communication line to control a communication session of the at least one client. The SIP server receives a SIP message transmitted from the at least one client, transfers the received SIP message to one of another SIP server and another one of the at least one client, and analyzes the received SIP message. The SIP server comprising a storage unit for storing a result of the analysis. The SIP server compares the result of the analysis and a SIP message received after the analysis, rewrites the SIP message based on a result of the comparison, and changes a transfer destination of the SIP message based on the result of the comparison.</p> |
