铁路通信信号工程技术2025，Vol.22Issue(6)：77-83,7.DOI:10.3969/j.issn.1673-4440.2025.06.012
GSM-R系统移动交换中心WCCU进程倒换后跨局呼叫失败案例简析
Case Study of Outgoing Call Failure After WCCU Process Switching in Mobile Switching Center of GSM-R System
摘要
Abstract
The Mobile Switching Center(MSC)is the most core network element of the railway GSM-R network,controlling the establishment and release of global mobile user calls,and providing interface functions to other adjacent offices.This paper takes the case of the abnormal status of the inter-office trunk circuit between Shanghai MSC and Beijing and Wuhan TMSC(Tandem Mobile Switching Center)after the switching of the WCCU(Wireless Call Control Unit)module of an MSC device.Using the comparative analysis method,together with network signaling,system logs,and equipment software parameter configurations,a detailed study is conducted.The possible causes of equipment failure are identified through troubleshooting,and effective and timely emergency response is implemented.Finally,the problem is successfully identified as the failure of inter-office calls caused by unreasonable software parameter settings.After the adjustment of the software parameters,this problem is successfully solved,providing reference for daily maintenance,fault analysis,emergency response,etc.of the railway GSM-R core network.关键词
GSM-R/移动交换中心/进程倒换/中继电路/软件参数Key words
GSM-R/Mobile Switching Center(MSC)/process switching/trunk circuit/software parameters分类
交通工程引用本文复制引用
许文渊..GSM-R系统移动交换中心WCCU进程倒换后跨局呼叫失败案例简析[J].铁路通信信号工程技术,2025,22(6):77-83,7.基金项目
中国铁路上海局集团有限公司2024年度科研立项开发课题(示范性推广)项目计划(2024120) （示范性推广）
