浅析DigitMap在拨号后时延及接通率的作用  

Role of DigitMap in Post-dialing Delay and Call Completion Rate

作　　者：周兰兰 杨杰[2] 

机构地区：[1]武钢通信公司,湖北武汉430080 [2]武汉职业技术学院,湖北武汉430074

出　　处：《通信技术》2011年第5期82-84,共3页Communications Technology

摘　　要：在软交换中,号码图表(DigitMap)是驻留在媒体网关(MG,Media Gateway)内,为检测和上报终结点收到的Digit事件,使用户摘机时随拨号音一同下发给MG,并要求用户拨号时,MG用DigitMap来判断用户所拨的号码流是否有效,当检测到的号码串和其中某一列相匹配时就向媒体网关控制器(MGC,Media Gateway Controller)发出通知,利用该描述符MG就可以实现成组发码。通过DigitMap数据与传统NO.7信令的对比,优化DigitMap数据可以缩短用户的拨号后时延,提高接通率。In the soft switch,the DigitMap is resident in the MG.The Digit Event the termination detected and reported by must be sent to the MG with the user hook＇s dial tone,and this requires dialing in user service.The MG determines the validity of the signal stream with DigitMap.The MGC would send a descriptor the MGC once it detects a serial number in matching up with some rows,the Media Gateway could realize en bloc transmission by using the descriptor.The comparison of DigitMap data and NO.7 Signaling,indicates that the optimization of DigitMap data could reduce the post-dialing delay and raise the call completion rate.

关 键 词：号码图表 接通率 软交换 

分 类 号：TN929.532[电子电信—通信与信息系统]