程控交换机数字中继呼叫失败原因分析  

Call failure analysis on digital trunk of PBX

作　　者：于振江[1] 闫震[1] 陈娟[1] 

机构地区：[1]邢台供电公司调度所,河北邢台054001

出　　处：《电力系统通信》2008年第12期62-65,72,共5页Telecommunications for Electric Power System

摘　　要：程控交换机数字中继主要采用No.7信令。在数字中继组网和日常设备维护中,经常出现各种呼叫失败的情况。针对这个问题,利用信令分析,对数字中继可能出现的各种故障进行判断,从中继信令配合等方面说明SEC,CGC,ADI,CFL等信令产生的原因及处理方法。Most of Digital trunk of PBX （Private Branch Exchange） adopts No. 7 signaling. Aiming at solving the problems of call failure occurring during digital trunk networking and daily equipment maintenance, this paper discusses the judgment methods on failures. It analyzes the causes of SEC ,CGC,ADI, CFL signaling from the aspect of signaling cooperation of digital trunk and puts forward some solutions for improvement.

关 键 词：程控交换机 中继 信令 呼叫失败 

分 类 号：TN916.428[电子电信—通信与信息系统]