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【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-Corporatetelecommunicationnetworks;SignallinginterworkingbetweenQSIGandH.323;Calldiversionsupplementaryservices
【原文标准名称】:信息技术系统间通信和信息交换团体电信网QSIG和H.323之间信号互通呼叫变更补充业务
【标准号】:ISO/IEC21411-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-08
【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】:数据传输;数据处理;电信;网络互连;信号发送系统;信息交换;通信规程;定义;补充业务;信息技术
【英文主题词】:Communicationprocedures;Dataprocessing;Datatransmission;Definitions;Informationinterchange;Informationtechnology;Networkinterconnection;Signallingsystems;Supplementaryservices;Telecommunications
【摘要】:ThisInternationalStandardspecifiessignallinginterworkingbetween"QSIG"and"H.323"insupportofcalldiversionsupplementaryserviceswithinaCorporatetelecommunicationNetwork(CN)."QSIG"isasignallingprotocolthatoperatesattheQreferencepointbetweenPrivateIntegratedServiceseXchanges(PINX)withinaPrivateIntegratedServicesNetwork(PISN).TheQreferencepointisdefinedinISO/IEC11579-1.APISNprovidescircuit-switchedbasicservicesandsupplementaryservicestoitsusers.QSIGisspecifiedinotherStandards,inparticularISO/IEC11572(callcontrolinsupportofbasicservices),ISO/IEC11582(genericfunctionalprotocolforthesupportofsupplementaryservices)andanumberofstandardsspecifyingindividualsupplementaryservices.ISO/IEC13873specifiestheQSIGprotocolinsupportofcalldiversionservices."H.323"isasetofsignallingprotocolsforthesupportofvoiceormultimediacommunicationwithinapacketnetwork,inparticularapacketnetworkthatusestheInternetProtocol(IP)asitsnetworklayerprotocol(IPnetwork).H.323signallingprotocolsoperatebetweenendpointsinanIPnetwork,eitherindirectlyviaoneormoregatekeepers,ordirectly.Anendpointcanbeaterminaloragatewaytoanothernetwork.H.323isan"umbrella"recommendationreferringtovariousITU-Trecommendations,inparticularRecommendationsH.225.0andH.245(basiccommunicationcapabilities)andRecommendationH.450.1(genericfunctionalprotocolforthesupportofsupplementaryservices).RecommendationH.450.3specifiestheH.323protocolinsupportofcalldiversionservices.NOTE-H.450.3appliesonlytothe1998versionofH.323(alsoknownasH.323version2)andtolaterversions.InbothISO/IEC13873(QSIG)andITU-RecommendationH.450.3(H.323),thecalldiversionsupplementaryservicesareCallForwardingUnconditional(SS-CFU),CallForwardingBusy(SS-CFB),CallForwardingNoReply(SS-CFNR)andCallDeflection(SS-CD).Thesesupplementaryservicesapplyduringcallestablishmentandprovidediversionofanincomingcalltoanotherdestination.InterworkingbetweenQSIGandH.323permitsacalloriginatingatauserofaPISNtoterminateatauserofanIPnetwork,oracalloriginatingatauserofanIPnetworktoterminateatauserofaPISN.ThisInternationalStandardprovidesthefollowingadditionalcapabilities:·acalloriginatingfromaPISNanddestinedforauserofanH.323networktobedivertedbytheH.323networktoanalternativedestination;·acalloriginatingfromanH.323networkanddestinedforauserofaPISNtobedivertedbythePISNtoanalternativedestination;·acalldestinedforauserofaPISNtobedivertedtoanalternativedestinationwherethatalternativedestinationisinanH.323network;·acalldestinedforauserofanH.323networktobedivertedtoanalternativedestinationwherethatalternativedestinationisinaPISN.ThisInternationalStandardisapplicabletoanyinterworkingunitthatcanactasagatewaybetweenaPISNemployingQSIGandanIPnetworkemployingH.323.
【中国标准分类号】:M11
【国际标准分类号】:33_040_35;33_160_60
【页数】:32P;A4
【正文语种】:英语