1、BC Referencenumber ISO/IEC15899:1998(E) INTERNATIONAL STANDARD ISO/IEC 15899 Firstedition 19981101 Informationtechnology Telecommunicationsandinformation exchangebetweensystemsBroadband PrivateIntegratedServicesNetwork ServicedescriptionBroadband connectionorientedbearerservices Technologiesdelinfor
2、mationTlcommunicationsetchange dinformationentresystmesRseauxprivsintgrationdeservices largebandeDescriptiondesservicesServiceslargebandede supportsorientsconnexionISO/IEC15899:1998(E) ISO/IEC1998 Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorb
3、yan ymeans,electronic ormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromthepublisher. ISO/IECCopyrightOffice * CasePostale56 * CH1211Genve20 * Switzerland PrintedinSwitzerland ii Contents Page Foreword iii Introduction iv 1 Scope 1 2 Conformance 1 3 Normativereferences 1 4
4、 Definitions 1 4.1 Externaldefinitions 1 4.2 Call 2 4.3 Call/connection 2 5 Listofacronyms 2 6 Broadbandconnectionorientedbearerservices 2 6.1 Description 2 6.2 StaticDescription:ServiceAttributes 3 6.2.1 Bearerserviceusingaconstantbitrate 3 6.2.2 Bearerservicewithrealtimerequirementsusingavariableb
5、itrate 4 6.2.3 Bearerservicewithoutrealtimerequirementsusingavariablebitrate 4 6.2.4 Bearerserviceusingtheavailablebitrate 5 6.2.5 Bearerserviceusingtheunspecifiedbitrate 6 6.3 Procedures 7 6.3.1 Provision 7 6.3.2 Normalprocedures 7 6.3.3 Exceptionalprocedures 7 6.4 Interworkingconsiderations 8 6.4.
6、1 InterworkingwithapublicBISDN 8 6.4.2 Interworkingwithanarrowbandprivateintegratedservicesnetwork(NPISN) 8 AnnexA Glossaryofterms 9 ISO/IEC ISO/IEC15899:1998(E) iii Foreword ISO(theInternationalOrganizationforStandardization)andIEC(theInternationalElectrotechnicalCommission)formthe specializedsyste
7、mforworldwidestandardization.NationalbodiesthataremembersofISOorIECparticipateinthe developmentofInternationalStandardsthroughtechnicalcommitteesestablishedbytherespectiveorganizationtodealwith particularfieldsoftechnicalactivity.ISOandIECtechnicalcommitteescollaborateinfieldsofmutualinterest.Other
8、internationalorganizations,governmentalandnongovernmental,inliaisonwithISOandIEC,alsotakepartinthework. Inthefieldofinformationtechnology,ISOandIEChaveestablishedajointtechnicalcommittee,ISO/IECJTC1.Draft InternationalStandardsadoptedbythejointtechnicalcommitteearecirculatedtonationalbodiesforvoting
9、.Publicationasa n InternationalStandardrequiresapprovalbyatleast75%ofthenationalbodiescastingavote. InternationalStandardISO/IEC15899waspreparedbyECMA(asECMA261)andwasadopted,underaspecial“fasttrack procedure”,byJointTechnicalCommitteeISO/IECJTC1, Informationtechnology,inparallelwithitsapprovalbynat
10、ional bodiesofISOandIEC. AnnexAisforinformationonly.ISO/IEC15899:1998(E) ISO/IEC iv Introduction ThisInternationalStandardisoneofaseriesofstandardsdefiningservicesandsignallingprotocolsapplicabletoBroadband PrivateIntegratedServicesNetworks.TheseriesusestheBISDNconceptsasdevelopedbyITUTandconformsto
11、the frameworkofInternationalStandardsforopensystemsinterconnectionasdefinedbyISO/IEC. ThisInternationalStandardspecifiesthebroadbandconnectionorientedbearerservices. ThisInternationalStandardisbaseduponthepracticalexperienceofECMAmembercompaniesandtheresultsoftheiractive andcontinuousparticipationin
12、theworkofISO/IECJTC1,ITUT,ETSIandotherinternationalandnationalstandardization bodies.Itrepresentsapragmaticandwidelybasedconsensus. TheservicesspecifiedinthisInternationalStandardarecompatiblewiththeequivalentservicesspecifiedbytheATMForum forprivateATMnetworksandbyITUTorETSIforpublicBISDN.INTERNATI
13、ONALSTANDARD ISO/IEC ISO/IEC15899:1998(E) 1 InformationtechnologyTelecommunicationsandinformationexchangebetween systemsBroadbandPrivateIntegratedServicesNetworkServicedescription Broadbandconnectionorientedbearerservices 1 Scope ThisInternationalStandardspecifiesservicedescriptionandcontrolaspectso
14、fthebroadbandconnectionorientedbearer serviceswhichmaybeprovidedbyBroadbandPrivateIntegratedServicesNetworks(BPISNs). Oneofthepurposesoftheservicespecificationforbroadbandconnectionorientedbearerservicesistoguideandconstrainth e workonsignallingprotocols.Therefore,thisInternationalStandardisconcerne
15、dmainlywiththecontrolaspectsofservices. ChangeoftrafficcharacteristicsduringacallisoutsidethescopeofthisInternationalStandard. ChargingconsiderationsareoutsidethescopeofthisInternationalStandard. 2 Conformance InordertoconformtothisInternationalStandard,aprotocolstandardshallspecifysignallingprotoco
16、lsandequipment behaviourthatarecapableofbeingusedinaBPISNwhichsupportsthebearerservicespecifiedinthisInternational Standard.Thismeansthat,toclaimconformance,aprotocolstandardisrequiredtobeadequateforthesupportofthose aspectsofclause6whicharerelevanttotheinterfaceorequipmenttowhichtheprotocolstandard
17、applies. 3 Normativereferences Thefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisInternational Standard.Atthetimeofpublication,theeditionsindicatedwerevalid.Allstandardsaresubjecttorevision,andpartiesto agreementsbasedonthisInternationalStandardareencou
18、ragedtoinvestigatethepossibilityofapplyingthemostrecentediti ons ofthestandardsindicatedbelow.MembersofIECandISOmaintainregistersofcurrentlyvalidInternationalStandard. ISO/IEC11574:1994, InformationtechnologyTelecommunicationsandinformationexchangebetweensystems PrivateIntegratedServicesNetworkCircu
19、itmode64kbit/sbearerservicesServicedescription, functionalcapabilitiesandinformationflows. ISO/IEC115791:1994, InformationtechnologyTelecommunicationsandinformationexchangebetweensystems PrivateIntegratedServicesNetworkPart1:ReferenceconfigurationforPISNExchanges (PINX). ITUTRec.I.112:1993, Vocabula
20、ryoftermsforISDNs. ITUTRec.I.113:1993, VocabularyoftermsforbroadbandaspectsofISDN. ITUTRec.I.210:1993, PrinciplesoftelecommunicationservicessupportedbyanISDNandthemeanstodescribethem. ITUTRec.I.361 BISDNATMlayerspecification. ITUTRec.I.363 BISDNATMadaptationlayer(AAL)specification. ATMForum UserNetw
21、orkInterfaceSpecification,Version4.0(UNI4.0). ATMForum TrafficManagementSpecification,Version4.0(TM4.0). 4 Definitions ForthepurposesofthisInternationalStandard,thefollowingdefinitionsapply. 4.1 Externaldefinitions ThisInternationalStandardusesthefollowingtermsdefinedinotherdocuments: - Basicservice
22、 (ITUTRec.I.210) - Connection (ITUTRec.I.113) - PrivateIntegratedServicesNetwork(PISN) (ISO/IEC115791)ISO/IEC15899:1998(E) ISO/IEC 2 - PrivateIntegratedServicesNetworkExchange(PINX) (ISO/IEC115791) - Service (ITUTRec.I.112) - Signalling (ITUTRec.I.112) - SupplementaryService (ITUTRec.I.210) - Traffi
23、ccontract (ITUTRec.I.113) - User (ISO/IEC11574) - Virtualchannel (ITUTRec.I.113) 4.2Call: Anassociationbetweentwoormoreusersusingatelecommunicationservicetocommunicatethroughoneormore networks. 4.3Call/connection: Acallcombinedwithasingleconnectionintheuserplaneforthetransferofuserinformation. 5 Lis
24、tofacronyms AAL ATMAdaptationLayer ABR AvailableBitRate ATM AsynchronousTransferMode BPISN BroadbandPrivateIntegratedServicesNetwork BCOB BroadbandConnectionOrientedBearer CBR ConstantBitRate CDV CellDelayVariation CLP CellLossPriority CLR CellLossRatio ISDN IntegratedServicesDigitalNetwork MBS Maxi
25、mumBurstSize MCR MinimumCellRate OAM OperationAndMaintenance PCR PeakCellRate PINX PrivateIntegratedServicesNetworkExchange PISN PrivateIntegratedServicesNetwork QoS QualityofService SCR SustainableCellRate UBR UnspecifiedBitRate VBR VariableBitRate 6 Broadbandconnectionorientedbearerservices 6.1 De
26、scription ThesebearerservicesallowPISNuserstorequestonademandbasisunrestricteddigitalinformationtransferwithconstantor variablebitratebetweenPISNusersandtonegotiateasuitabletrafficcontractwiththePISN. Onthebasisofthenegotiatedtrafficcontract,PISNuserscancommunicateinpointtopointorpointtomultipoint c
27、onfigurationsviathePISNusingATMvirtualchannelconnections.Onceavirtualchannelconnectionhasbeenestablished accordingtotheproceduresdescribedin6.3,itisavailableforthetransmissionofdigitalsignalseitherinonedirectiono rin bothdirectionssimultaneously,withinthelimitsofthetrafficcontract,forthedurationofth
28、ecall/connection.ThePISNsh all placenorestrictionsonthecontentofthedigitalsignalsbutmayapplytrafficandcongestioncontrolinordertoprevent violationofthenegotiatedtrafficcontract. ISO/IEC ISO/IEC15899:1998(E) 3 6.2 StaticDescription:ServiceAttributes Thevalidcombinationsofserviceattributesforallbearers
29、ervicesspecifiedherearethosedefinedinannex9oftheATM ForumspecificationUNI4.0.TheATMservicecategoriesaredefinedintheATMForumspecificationTM4.0. 6.2.1 Bearerserviceusingaconstantbitrate 6.2.1.1 Dominantinformationtransferattributes Thedominantinformationtransferattributevaluesforthisserviceshall be: 1
30、) Informationtransfermode:ATM 1.1) Connectionmode:Connectionoriented 1.2) ATMservicecategory:ConstantBitRate(CBR) 1.3) Allowablebearerclasses:BCOBA,BCOBX 2) Informationtransferrate:Specifiedindividuallyforeachdirectionoftransmission 2.1) Peakcellrate: PCR(CLP=0+1)declaredbytheuseronaperconnectionbas
31、is PCR(CLP=0)optionallydeclaredseparately PCR(OAM)optionallydeclaredseparately 2.2) Sustainablecellrate/maximumburstsize:notapplicable 2.3) Tagging:Notallowed,oroptionallyallowedifPCR(CLP=0)isgiven 2.4) Framediscard:Eitherallowedornotallowed 3) Informationtransfercapability:Unrestricted 4) Structure
32、:Cellsequenceintegrity. 6.2.1.2 Secondaryinformationtransferattributes Thesecondaryinformationtransferattributevaluesforthisservicecategoryshall be: 5) Establishmentofcommunication:Demand;reservedandpermanentoutsidethescopeofthisInternationalStandard 6) Symmetry:Bidirectionalsymmetric,bidirectionala
33、symmetric,unidirectional 7) Communicationconfiguration:Pointtopoint;pointtomultipoint 6.2.1.3 Accessattributes Theaccessattributevaluesforthisservicecategoryshall be: 8) Accesschannel: ATMvirtualchannel 9) Accessprotocol: ATMlayer:I.361 ATMAdaptationLayer(AAL):I.363 Higherlayers:Applicationspecific
34、6.2.1.4 Generalattributes 10) Supplementaryservicesprovided:OutsidethescopeofthisInternationalStandard 11) Qualityofservice: QoSclass0;otherclassesnetworkspecific 11.1) Maximumendtoendtransitdelay:Optionallyspecified(forforwarddirection). 11.2) Celllossratio: OptionallyeitherCLR(CLP=0+1)orCLR(CLP=0)
35、specified 11.3) Celldelayvariation: OptionallypeaktopeakCDVspecified 12) Interworkingpossibilities:64kbit/sandnx64kbit/scircuitmodebasicservicesISO/IEC15899:1998(E) ISO/IEC 4 6.2.2 Bearerservicewithrealtimerequirementsusingavariablebitrate 6.2.2.1 Dominantinformationtransferattributes Thedominantinf
36、ormationtransferattributevaluesforthisserviceshall be: 1) Informationtransfermode:ATM 1.1) Connectionmode:Connectionoriented 1.2) ATMservicecategory:RealTimeVariableBitRate(rtVBR) 1.3) Allowablebearerclasses:BCOBC,BCOBX 2) Informationtransferrate:Specifiedindividuallyforeachdirectionoftransmission 2
37、.1) Peakcellrate: PCR(CLP=0+1)declaredbytheuseronaperconnectionbasis 2.2) Sustainablecellrate: EitherSCR(CLP=0+1)orSCR(CLP=0)declaredbytheuseronaperconnectionbasis 2.3) Maximumburstsize: EitherMBS(CLP=0+1)orMBS(CLP=0)declaredbytheuseronaperconnectionbasis 2.4) Tagging:IfSCR(CLP=0)isgiven,eitherallow
38、edornotallowed 2.5) Framediscard:Eitherallowedornotallowed 3) Informationtransfercapability:Unrestricted 4) Structure:Cellsequenceintegrity. 6.2.2.2 Secondaryinformationtransferattributes Thesecondaryinformationtransferattributevaluesforthisservicecategoryshall be: 5) Establishmentofcommunication:De
39、mand;reservedandpermanentoutsidethescopeofthisInternationalStandard 6) Symmetry:Bidirectionalsymmetric,bidirectionalasymmetric,unidirectional 7) Communicationconfiguration:Pointtopoint;pointtomultipoint 6.2.2.3 Accessattributes Theaccessattributevaluesforthisservicecategoryshall be: 8) Accesschannel
40、: ATMvirtualchannel 9) Accessprotocol: ATMlayer:I.361 ATMAdaptationLayer(AAL):I.363 Higherlayers:Applicationspecific 6.2.2.4 Generalattributes 10) Supplementaryservicesprovided:OutsidethescopeofthisInternationalStandard 11) Qualityofservice: QoSclass0;otherclassesnetworkspecific 11.1) Maximumendtoen
41、dtransitdelay:Optionallyspecified(forforwarddirection). 11.2) Celllossratio: OptionallyeitherCLR(CLP=0+1)orCLR(CLP=0)specified 11.3) Celldelayvariation: OptionallypeaktopeakCDVspecified 12) Interworkingpossibilities:Applicationspecific 6.2.3 Bearerservicewithoutrealtimerequirementsusingavariablebitr
42、ate 6.2.3.1 Dominantinformationtransferattributes Thedominantinformationtransferattributevaluesforthisserviceshall be: 1) Informationtransfermode:ATM 1.1) Connectionmode:Connectionoriented 1.2) ATMservicecategory:NonrealTimeVariableBitRate(nrtVBR) ISO/IEC ISO/IEC15899:1998(E) 5 1.3) Allowablebearerc
43、lasses:BCOBC,BCOBX 2) Informationtransferrate:Specifiedindividuallyforeachdirectionoftransmission 2.1) Peakcellrate: PCR(CLP=0+1)declaredbytheuseronaperconnectionbasis 2.2) Sustainablecellrate: EitherSCR(CLP=0+1)orSCR(CLP=0)declaredbytheuseronaperconnectionbasis 2.3) Maximumburstsize: EitherMBS(CLP=0+1)orMBS(CLP=0)declaredbytheuseronaperconnectionbasis 2.4) Tagging:IfSCR(CLP=0)isgiven,eitherallowedornotallowed 2.5) Framediscard:Eitherallowedornotallowed 3) Informationtransfercapability:Unrestricted 4) Structure:Cellsequenceintegrity. 6.2.3.2 Secondaryinformationtransferattributes These
