【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-PrivateIntegratedServicesNetwork-Specification,functionalmodelandinformationflows-Pathreplacementadditionalnetworkfeature
【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、功能模型和信息流路径替换附加网络特性
【标准号】:ISO/IEC13863-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-12
【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】:数据通信;网络;电信;网络互连;信息技术;数据处理;专业网络;综合业务数字网;定义;信息交换;电路网络
【英文主题词】:Circuitnetworks;Datacommunication;Dataprocessing;Definitions;Informationinterchange;Informationtechnology;ISDN;Network;Networkinterconnection;Privatenetworks;Telecommunications
【摘要】:ThisInternationalStandardspecifiesthePathReplacementadditionalnetworkfeature(ANF-PR),whichisapplicabletovariousbasicservicessupportedbyPrivateIntegratedServicesNetworks(PISN).BasicservicesarespecifiedinISO/IEC11574.ANF-PRisafeaturewhichappliestoanestablishedcall,allowingthatcall'sconnectionbetweenPrivateIntegratedServicesNetworkExchanges(PINXs)tobereplacedbyanewconnection.Ifthenewconnectionisrequiredtosatisfycertaincriteria,ANF-PRshouldbeusedinconjunctionwithothersupplementaryservicesand/orANFs.AnnexAgivesexamplesofthecircumstancesunderwhichANF-PRcanbeusedandcriteriawhichcangoverntheselectionofthenewconnection.Additionalnetworkfeaturespecificationsareproducedinthreestages,accordingtothemethoddescribedinCCITTRecommendationI.130forsupplementaryservices.ThisInternationalStandardcontainsthestage1andstage2specificationsofANF-PR.Thestage1specification(clause6)specifiesthefeatureasseenbyanentitywhichinitiatespathreplacement,theANF-PRuser.Thestage2specification(clauses7,8and9)identifiesthefunctionalentitiesinvolvedinthefeatureandtheinformationflowsbetweenthem.Clause7containsthestage2specificationforbasicoperationofthefeature.Clause8containsthestage2specificationforanenhancedmodeofworkingwhichcanbeemployedwhensupportedbyalltheequipmentinvolved.Itallowssomeoftheelementsoftheoldconnectiontobere-used.Clause9containsthestage2specificationforanoptionalenhancementofthebasicoperationofthefeature.ItallowstheANF-PRusertobelocatedinanyPINXintheoldconnectionandtodecidethedirectionofthenewconnection.
【中国标准分类号】:L79
【国际标准分类号】:33_040_35
【页数】:37P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasurementofPneumaticPermeabilityofPartiallySaturatedPorousMaterialsbyFlowingAir
【原文标准名称】:用流动空气测定局部饱水孔隙材料气动渗透性的标准试验方法
【标准号】:ASTMD6539-2000
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Air;Flowing;Measurement;Partial;Permeability;Pneumatic;Pneumatics;Porousmaterials;Testmethods;Testing
【摘要】:
【中国标准分类号】:N13
【国际标准分类号】:13_080_20
【页数】:10P;A4
【正文语种】:英语