Packet extraction method, packet extraction device and packet extraction program

摘要

PROBLEM TO BE SOLVED: To extract a series of sequences spread over different protocols.;SOLUTION: Line information in which a physical termination-ID included in a Megaco signal and a CIC included in a SIGTRAN signal, both being statically determined by settings of relay call control servers 3B and MG6, are correlated is stored in a line information storage unit 23. Node information in which a transmission destination IP address for the Megaco signal and a device number included in the SIGTRAN signal are correlated is stored in a node information storage unit 24. A SIP signal and the Megaco signal are tied using a connection IP address, and the Megaco signal and the SIGTRAN signal are tied using the line information and the node information. The SIP signal and the SIGTRAN signal necessary for securing a speech path can thereby be tied via the Megaco signal even when corresponding information identifiable as the same call is nonexistent between the SIP signal and the SIGTRAN signal.;COPYRIGHT: (C)2014,JPO&INPIT