| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a mechanism for appropriately selecting SDP medium information for each SIP communication transport protocol even if SDP medium information is not designated at the transmission/reception of an INVITE command.SOLUTION: If SDP is not included in an INVITE request received from an SIP server, an information processing device determines an SIP communication transport protocol. On determination that the transport protocol is UDP, the information processing device selects SDP medium information according to the type of the SIP server. On determination that the transport protocol is TCP or SSL, the information processing device selects all of the SDP medium information, and generates an INVITE response having the selected SDP medium information set therein, to respond to the SIP server.</p> |
