Unpredicted / Unrecognized / Unreasonable Signal Information Message Processing of Integrated Information Network User Part of Electronic Switching Center

摘要

The present invention relates to a processing procedure and an implementation method for an unexpected / undefined / unreasonable signal information message generated in a No. 7 signaling ISDN User Part (ISUP) An ASS-S (ASS-Subacrier) 1, an INS (Interconnection Network Subsystem) 2, a CCS (Central Control Subsystem) 3, an ASS-A method of performing an UPI block related to an unexpected / undefined / unreasonable signal information message processing of an entire electronic exchange ISUP having a No Signaling System (5) A second step (502 to 504) of receiving and processing a format error message from a destination station after performing the first step, a first step (502) of analyzing a message reception state in a message reception waiting state, A third step (505 to 508) of receiving and processing an undefined message from the other station after performing the step, and a third step (505 to 508) of performing a process according to an unrequited parameter reception waiting state from the other station Steps 509 to 520 and a fifth step 521 to 526 of receiving and processing CFN, release, FRJ, and release completion signals from the other station after the first step.