【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-Corporatetelecommunicationnetworks-TunnellingofQSIGoverSIP
【原文标准名称】:信息技术.系统间远程通信和信息交换.联合远程通信网络.SIP上QSIG的隧道效应
【标准号】:ISO/IEC22535-2005
【标准状态】:作废
【国别】:国际
【发布日期】:2005-05
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IECJTC1/SC6
【标准类型】:()
【标准水平】:()
【中文主题词】:传输协议;远程通信;电信;信号传输;QSIG;协议;通信网;网络互连;信息技术;信息交换;定义
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiestunnellingof"QSIG"overtheSessionInitiationProtocol(SIP)withinacorporatetelecommunicationnetwork(CN)."QSIG"isasignallingprotocolthatoperatesbetweenPrivateIntegratedservicesNetworkexchanges(PINX)withinaPrivateIntegratedServicesNetwork(PISN).APISNprovidescircuit-switchedbasicservicesandsupplementaryservicestoitsusers.QSIGisspecifiedinStandards,inparticular[1](callcontrolinsupportofbasicservices),[2](genericfunctionalprotocolforthesupportofsupplementaryservices)andanumberofStandardsspecifyingindividualsupplementaryservices.NOTEThenameQSIGwasderivedfromthefactthatitisusedforsignallingattheQreferencepoint.TheQreferencepointisapointofdemarcationbetweentwoPINXs.SIPisanapplicationlayerprotocolforestablishing,terminatingandmodifyingmultimediasessions.ItistypicallycarriedoverIP[4],[6].Telephonecallsareconsideredasatypeofmultimediasessionwherejustaudioisexchanged.SIPisdefinedin[9].OftenaCNcomprisesbothPISNsemployingQSIGandIPnetworksemployingSIP.AcallcanoriginateatauserconnectedtoaPISNandterminateatauserconnectedtoanIPnetworkorviceversa.Ineithercase,agatewayprovidesinterworkingbetweenQSIGandSIPattheboundarybetweenthePISNandtheIPnetwork.Basiccallinterworkingatagatewayisspecifiedin[3].AnothercaseiswhereacalloriginatesatauserconnectedtoaPISN,traversesanIPnetworkusingSIP,andterminatesatauserconnectedtoanother(oranotherpartofthesame)PISN.ThisdocumentaddressesthislastcaseinawaythatpreservesallQSIGcapabilitiesacrosstheIPnetwork.ItachievesthisbytunnellingQSIGmessageswithinSIPrequestsandresponsesinthecontextofaSIPdialog.ThetunnellingofQSIGthroughapublicIPnetworkemployingSIPisoutsidethescopeofthisspecification.However,thefunctionalityspecifiedinthisspecificationisinprincipleapplicabletosuchascenariowhendeployedinconjunctionwithotherrelevantfunctionality(e.g.,addresstranslation,securityfunctions,etc.).ThisspecificationisapplicabletoanyinterworkingunitthatcanactasagatewaybetweenaPISNemployingQSIGandacorporateIPnetworkemployingSIP,withQSIGtunnelledwithinSIPrequestsandresponses.
【中国标准分类号】:M11
【国际标准分类号】:35_100_30
【页数】:11P;A4
【正文语种】:英语