공통선 신호방식의 오류정정에 관한 연구

Abstract

Most of the wire and wireless exchange system use the No.7 signaling protocol which is one of the common channel signaling method. This protocol is used for normal call and transit call processing, intelligent network service and MAP(Mobile Application Part) interworking method. And it offers various services and reliable network performance. An error which occured in the No.7 signaling causes failure of the exchange system or the difficulty of maintaining, so the failure analysis of the No.7 signaling is needed for network reliability. We showed the error correction method of No.7 signaling failure in hardware and software sides in this paper. And we analysis the result about call statistics and ISUP(ISDN User Part) message by using SNS-7(Seoul commtech No.7 Status management System) which analizes the No.7 signaling message, and also presents the solution to an unsolved problem for a long time by analyzing the exception-handling message in the No.7 signaling.