【英文标准名称】:Informationtechnology-OpenSystemsInterconnection-VirtualTerminalBasicClassService
【原文标准名称】:信息技术.开放系统互连.虚拟终端基本类服务
【标准号】:ISO/IEC9040-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-06
【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】:网络互连;信息交流;信息技术;通信规程;信息交换;数据处理;定义;开放系统互连
【英文主题词】:Communicationprocedures;Dataprocessing;Definitions;Informationexchange;Informationinterchange;Informationtechnology;Networkinterconnection;Opensystemsinterconnection;OSI
【摘要】:ThisInternationalStandarddefines,inanabstractway,theexternallyvisibleBasicClassVirtualTerminalServicewithintheOSIApplicationLayerintermsofa)amodeldefiningtheinteractionbetweenusersoftheservice;b)theprimitiveactionsandeventsoftheservice;c)theparameterdataassociatedwitheachprimitiveactionandevent;d)therelationshipbetween,andthevalidsequencesof,theseactionsandevents.TheservicedefinedinthisInternationalStandardisthatwhichisprovidedbytheOSIBasicClassVirtualTerminalProtocol(inconjunctionwiththeAssociationControlServiceElementandthePresentationService)andwhichmaybeusedbyanyuserincludingotherApplicationServiceElements.Therela-tionshipbetweenthestandardsforVirtualTerminalService,VirtualTerminalProtocol,ACSE,PresentationLayerServiceandtheuseroftheVirtualTerminalServiceisshowninfigure1.ThisInternationalStandardalsodefinestwostandarddefaultvirtualterminalenvironmentprofilesanddescribestheformofregisteredvirtualterminalenvironmentprofilesandcontrolobjects.Virtualterminalenvironmentprofilesdefinesetsofvirtualterminalenvironmentparametersforuseintheestab-lishmentofvirtualterminalassociationsandsubsequentne-gotiation.ThisInternationalStandardalsodefinesastructureofASN.1ObjectIdentifiersfortheobjectsdefinedinthisInternationalStandardandforuseinaregisterofvirtualterminalobjects.ThisInternationalStandarddoesnotspecifyindividualimple-mentationsorproducts,nordoesitconstraintheimplementa-tionofentitiesandinterfaceswithinacomputersystem.Thereis,therefore,norequirementforconformancetothisInterna-tionalStandard.ThisInternationalStandardappliestointeractiveapplicationsrequiringterminalorientedcommunicationexpressedintermsofthetransmissionandmanipulationofgraphicalimageshavingthefollowingcharacteristics:e)theimagesarecomposedofcharacter-boxgraphicele-mentsorganisedintoaone,twoorthreedimensionalstructure;f)attributesmaybeassociatedwithanygraphicelementtoqualifyitsmodeofdisplay.Controlinformationforthecommunicationcanbemodelledusingvirtualterminalcontrolobjects,andmultipledevicescanbemodelledusingvirtualterminaldeviceobjectslinkedtotheothervirtualterminalobjects.
【中国标准分类号】:L79
【国际标准分类号】:35_100_70
【页数】:86P.;A4
【正文语种】:英语


Product Code:SAE AMS7276
Title:Rings, Sealing, Fluorocarbon (FKM) Rubber High-Temperature-Fluid Resistant Low Compression Set 70 to 80
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, compression seals, O-ring cord and molded in place gaskets.