YDT 1284-2003 公用电信网间通信质量技术要求——电话呼叫的接通率和拨号后时延

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1、1'L中华人民共和国通信行业标准丫D/T1284-2003公用电信网间通信质量技术要求—电话呼叫的接通率和拨号后时延Thetechnicalrequirementforqualityofcommunicationforinter-publictelecomnetwork-callcompletionrateandpostdaillingdelayfortelephonecal2003-07-28发布2003-07-28实施中华人民共和国信息产业部发布丫D/T1284-2003目次前言·.......................................................

2、..................................................................IV1范围·····················································································································⋯⋯12规范性引用文件·····································································································

3、·⋯⋯13术语和定义··································，·························。······。········································⋯⋯13.1呼损(CallLossProbability)····································。·········································⋯⋯13.2网路接通率(CallCompletionRate)············································

4、···。··················⋯⋯13.3拨号后时延(PostDialingDelay)·····································································⋯⋯13.4忙时(BusyHour)··························································································⋯⋯23.5参考负荷A(ReferenceLoadA)·············································

5、···························⋯⋯23.6参考负荷B(ReferenceLoadB)············································。······。··················⋯⋯”24各种呼叫的参考连接(ReferenceConnections)·······························。·······························⋯⋯24.1固定电话呼叫·································································

6、·······························⋯⋯24.1.1本地呼叫·····························································································⋯⋯24.1.2长途呼叫···································。········································，················⋯⋯34.1.3国际去话和来话呼叫的国内段····································。。

7、··········。·················⋯⋯34.1.4电信服务呼叫··································。·。··················································⋯⋯44.2移动电话呼叫···············································。···········