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【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-PrivateIntegratedServicesNetwork;Specification,functionalmodelandinformationflows;CallPriorityInterruptionandCallPriorityInterruptionProtectionsuppleme
【原文标准名称】:信息技术.系统间远程通信和信息交换.专用综合业务网.规范、功能模式和信息流.呼叫优先中断和呼叫优先中断保护补充业务
【标准号】:ISO/IEC15991-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-04
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:专用综合业务网;呼叫传输;综合业务数字网络;PISN;网络互连;数据通信;ISDN;专业网络;电信;信息交换;数据处理;信息流;通信网;定义;中断;信息技术
【英文主题词】:Calltransmission;Communicationnetworks;Datacommunication;Dataprocessing;Definitions;Informationflow;Informationinterchange;Informationtechnology;Integratedservicesdigitalnetwork;Interruptions;ISDN;Networkinterconnection;PISN;Privateintegratedservicesnetworking;Privatenetworks;Telecommunications
【摘要】:ThisInternationalStandardspecifiestheSupplementaryServicesCallPriorityInterruption(SS-CPI)andCallPriorityInterruptionProtection(SS-CPIP),whichareapplicabletovariousbasicservicessupportedbyPrivateIntegratedServicesNetworks(PISN).BasicservicesarespecifiedinISO/IEC11574.NOTE1-ThiseditionofthisInternationalStandarddoesnotapplytothecircuit-modeMultipleRateBearerService.SS-CPIisasupplementaryservicethatallowsacallrequestforaprioritycalltoproceedsuccessfullyinthecasethatthereisnouserinformationchannelavailable.Thisisaccomplishedbyforcereleasinganestablishedcalloflowerpriority.SS-CPIPisasupplementaryservicethatallowsfortheprotectionofcallsagainstinterruptionfromother,priority,calls.SS-CPIandSS-CPIParedescribedseparatelybecauseSS-CPIisaserviceusedbyacallinguser,andSS-CPIPisaserviceusedbyeitheracallinguseroracalleduser.Supplementaryservicespecificationsareproducedinthreestages,accordingtothemethoddescribedinETS300387.ThisInternationalStandardcontainsthestage1andstage2specificationsofSS-CPI.Thestage1specification(clause6)specifiesthegeneralfeatureprinciplesandcapabilities.Thestage2specification(clause7)identifiestheFunctionalEntitiesinvolvedinthesupplementaryserviceandtheinformationflowsbetweenthem.
【中国标准分类号】:M11
【国际标准分类号】:33_040_35
【页数】:42P;A4
【正文语种】:英语