SIGNAL RELAYING SERVER, METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To provide a signal relaying server capable of highly satisfactory data communication corresponding to the congestion state of a network while securing the communication. SOLUTION: This signal relaying server 10 relays a session control signal, and is equipped with a signal reception section 10 which receives an INVITE signal from a personal computer 201, an information extraction section 102 which extracts protocol information showing a candidate for the protocol of user data from an SDP message in the INVITE signal, a signal editing section 103 which selects protocol information of a specified bandwidth or higher from the protocol information according to the congestion state of the network and performs editing to delete the selected protocol information from the SDP message in the INVITE information, and a transmission section 104 which sends the INVITE signal to the personal computer 202. COPYRIGHT: (C)2006,JPO&NCIPI