SIST EN 300 299 V1.3.2:2003

Broadband Integrated Services Digital Network (B-ISDN); Cell based user network access for 155 520 kbit/s and 622 080 kbit/s; Physical layer interfaces for B-ISDN applications

To specify the requirements for a B-UNI applying to cell-based interfaces at 155 520 kbit/s and 622 080 kbit/s. This revision of edition 2 of ETS 300 299 (to be EN 300 299 V1.3.1) includes improvements and simplification of the scrambler mechanism and the OAM cell payload for these systems.

Širokopasovno digitalno omrežje z integriranimi storitvami (B-ISDN) – Dostop celičnega uporabnika do omrežja s hitrostma 155520 kbit/s in 622080 kbit/s – Vmesniki fizične plasti za aplikacije v sistemu B-ISDN

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 299 V1.3.2 (2000-05) - Broadband Integrated Services Digital Network (B-ISDN); Cell based user network access for 155 520 kbit/s and 622 080 kbit/s; Physical layer interfaces for B-ISDN applications

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Broadband Integrated Services Digital Network (B-ISDN); Cell based user network access for 155 520 kbit/s and 622 080 kbit/s; Physical layer interfaces for B-ISDN applications33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 299 Version 1.3.2SIST EN 300 299 V1.3.2:2003en01-december-2003SIST EN 300 299 V1.3.2:2003SLOVENSKI
STANDARD
ETSIEN300299V1.3.2(2000-05)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN);Cellbasedusernetworkaccessfor155520kbit/sand622080kbit/s;PhysicallayerinterfacesforB-ISDNapplicationsSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)2ReferenceREN/TM-06017-4Keywordsaccess,ATM,B-ISDN,interface,ISDN,transmission,UNIETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.84Referenceconfigurationattheuser-networkinterface.94.1Functionalgroupsandreferencepoints.94.2Examplesofphysicalrealizations.104.3BasiccharacteristicsoftheinterfacesatTBandSBreferencepoints.144.3.1Characteristicsoftheinterfacesat155520kbit/s.144.3.1.1InterfaceattheTBreferencepoint.144.3.1.2InterfaceattheSBreferencepoint.144.3.1.3RelationshipbetweeninterfacesatSBandTB.144.3.2Characteristicsoftheinterfacesat622080kbit/s.144.3.2.1InterfaceatTBreferencepoint.144.4RelationshipbetweenISDNinterfaces.144.5Functionalgroupscharacteristics.144.5.1Networktermination1forB-ISDN.154.5.2Networktermination2forB-ISDN(B-NT2).154.5.3TerminalequipmentforB-ISDN(B-TE).154.5.3.1Terminalequipmenttype1forB-ISDN(B-TE1).164.5.3.2Terminalequipmenttype2forB-ISDN(B-TE2).164.5.4TerminaladapterforB-ISDN(B-TA).165Usernetworkinterfacespecifications.165.1Interfacelocationwithrespecttoreferenceconfiguration.165.2Interfacelocationwithrespecttothewiringconfiguration.166Serviceandlayeringaspectsofthephysicallayer.176.1ServicesprovidedtotheATM-layer.176.2ServiceprimitivesexchangedwiththeATMlayer.176.3Sublayeringofthephysicallayer.177PhysicalmediumcharacteristicsoftheUNIat155520kbit/s.187.1CharacteristicsoftheinterfaceattheTBandSBreferencepoints.187.1.1Bitrateandinterfacesymmetry.187.1.2Physicalcharacteristics.187.1.2.1Electricalinterface.187.1.2.1.1Interfacerange.187.1.2.1.2Transmissionmedium.187.1.2.1.3ElectricalparametersatinterfacepointsIaandIb.187.1.2.1.4Electricalconnectors.187.1.2.1.5Linecoding.197.1.2.1.6ElectromagneticCompatibility/Interference(EMC/EMI)requirements.197.1.2.2Opticalinterface.207.1.2.2.1Attenuationrange.207.1.2.2.2Transmissionmedium.207.1.2.2.3Opticalparameters.207.1.2.2.4Opticalconnectors.217.1.2.2.5Safetyrequirements.217.1.2.3Jitterandwander.21SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)48PhysicalmediumcharacteristicsoftheUNIat622080kbit/s.218.1CharacteristicsoftheinterfaceattheTBandSBreferencepoints.218.1.1Bitrateandinterfacesymmetry.218.1.2Physicalcharacteristics.228.1.2.1Attenuationrange.228.1.2.2Transmissionmedium.228.1.2.3Opticalparameters.228.1.2.3.1Linecoding.228.1.2.3.2Operatingwavelength.228.1.2.3.3Inputandoutputportcharacteristics.228.1.2.4Opticalconnectors.228.1.2.5Safetyrequirements.228.1.2.6Jitterandwander.239Powerfeeding.239.1Provisionofpower.239.2PoweravailableatB-NT1.239.3Feedingvoltage.239.4SafetyandProtectionrequirements.239.4.1Safety.239.4.2Protection.2410Functionsprovidedbythetransmissionconvergencesublayer.2410.1Transfercapability.2410.1.1Interfaceat155520kbit/s.2410.1.2Interfaceat622080kbit/s.2410.2Physicallayeraspects.2410.2.1Timing.2410.2.2Interfacestructurefor155520kbit/sand622080kbit/s.2410.3HeaderErrorControl(HEC).2510.3.1HECfunctions.2510.3.2HECsequencegeneration.2710.4Idlecells.2710.5Celldelineationandscrambling.2710.5.1Celldelineationandscramblingobjectives.2710.5.1.1Celldelineationalgorithm.2810.5.2Celldelineationperformance.2910.5.3Scrambleroperation.2910.5.3.1DistributedSampleScrambler(31storder)operation.2910.5.3.2Transmitteroperation.2910.5.3.3Receiveroperation.3010.5.3.4Statetransitiondiagramandmechanism.3111UNIrelatedOAMfunctions.3211.1Transmissionoverheadallocation.3211.2OAMcellidentification.3211.3AllocationofOAMfunctionsininformationfield.3311.4Maintenancesignals.3511.5Transmissionperformancemonitoring.3511.6Controlcommunication.3512Operationalfunctions.3512.1Descriptionofsignalsattheinterface.3512.1.1SignalsdefinedinITU-TRecommendationI.610.3512.1.2Celldelineationsignals.3612.2Definitionsofstatetablesatnetworkandusersides.3612.2.1Layer1statesontheusersideoftheinterface.3612.2.2Layer1statesatthenetworksideoftheinterface.3712.2.3Definitionofprimitives.3912.2.4Statetables.40SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)5AnnexA(informative):Impactofrandombiterrorsoncelldelineationperformance.43AnnexB(informative):DistributedSampleScramblerimplementationexample.45History.47SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).ThepresentdocumentdefinesthecellbasedusernetworkaccessphysicallayerinterfacestobeappliedtotheTB,SBreferencepointsofthereferenceconfigurationsoftheBroadbandIntegratedServicesDigitalNetwork(B-ISDN)User-NetworkInterface(UNI)at155520kbit/sand622080kbit/s,forB-ISDNapplications.ItaddressesseparatelythePhysicalMediaDependant(PMD)andTransmissionConvergence(TC)sublayersusedattheseinterfacesandaddressesalsotheimplementationofUNIrelatedphysicallayerOperationsAndMaintenance(OAM)functions.ThepresentdocumenttakesintoaccounttherecommendationsgiveninITU-TRecommendationsI.413[7],I.432.1[8]andI.432.2[9].Thepresentdocumentincludesaneditorialimprovementofthesafetyrelatedprovisions.NationaltranspositiondatesDateoflatestannouncementofthisEN(doa):31August2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):28February2001DateofwithdrawalofanyconflictingNationalStandard(dow):28February2001SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)71ScopeThepresentdocumentdefinesthephysicallayerinterfacetobeappliedtotheSBandTBreferencepointsofthereferenceconfigurationsoftheBroadbandIntegratedServicesDigitalNetwork(B-ISDN)cellbasedUser-NetworkInterface(UNI)at155520kbit/sand622080kbit/s.ItaddressesseparatelythePhysicalMediaDependant(PMD)andTransmissionConvergence(TC)sublayersusedattheseinterfaces,andaddressesalsotheimplementationofUNIrelatedphysicallayerOAMfunctions.TheselectionofthephysicalmediumfortheinterfacesattheSBandTBreferencepointsshouldtakeintoaccountthatopticalfibreisagreedasthepreferredmediumtobeusedtocablecustomerequipment.However,inordertoallowtheuseofexistingcablingofcustomerequipment,othertransmissionmedia(e.g.twistedpairsandcoaxialcables)shouldnotbeprecluded.Also,implementationsshouldallowterminalinterchangeability.Thepresentdocumentreflectsinitsstructureandcontentthedesiretotakecareofsuchearlyconfigurationsandintroducesadegreeoffreedomwhenchoosingaphysicalmediumatthephysicallayer.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ITU-TRecommendationG.652(1997):"Characteristicsofasingle-modeopticalfibrecable".[2]ETSIETS300166(1993):"TransmissionandMultiplexing(TM);Physicalandelectricalcharacteristicsofhierarchicaldigitalinterfacesforequipmentusingthe2048kbit/s-basedplesiochronousorsynchronousdigitalhierarchies".[3]ETSIETS300232(1993):"TransmissionandMultiplexing(TM);OpticalinterfacesforequipmentsandsystemsrelatingtotheSynchronousDigitalHierarchy[ITU-TRecommendationG.957(1993),modified]".[4]ITU-TRecommendationI.113(1997):"VocabularyoftermsforbroadbandaspectsofISDN".[5]ITU-TRecommendationI.321(1991):"B-ISDNprotocolreferencemodelanditsapplication".[6]ITU-TRecommendationI.361(1995):"B-ISDNATMlayerspecification".[7]ITU-TRecommendationI.413(1993):"B-ISDNuser-networkinterface".[8]ITU-TRecommendationI.432.1(1999):"B-ISDNuser-networkinterface-Physicallayerspecification:Generalcharacteristics".[9]ITU-TRecommendationI.432.2(1999):"B-ISDNuser-networkinterface-Physicallayerspecification:155520kbit/sand622080kbit/soperation".[10]ITU-TRecommendationI.610(1999):"B-ISDNoperationandmaintenanceprinciplesandfunctions".[11]ITU-TRecommendationX.200(1994):"Informationtechnology-OpenSystemsInterconnection-Basicreferencemodel:Thebasicmodel".SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)8[12]ETSIETS300404(1997):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);B-ISDNOperationAndMaintenance(OAM)principlesandfunctions".[13]IEC60825-1(1993):"Safetyoflaserproducts:Part1:Equipmentclassification,requirementsanduser'sguide".[14]CENELECEN60950(1992):"Safetyofinformationtechnologyequipment".[15]ITU-TRecommendationG.825:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthesynchronousdigitalhierarchy(SDH)".[16]ITU-TRecommendationG.958(1994):"Digitallinesystemsbasedonthesynchronousdigitalhierarchyforuseonopticalfibrecables".[17]ITU-TRecommendationG.826(1999):"Errorperformanceparametersandobjectivesforinternational,constantbitratedigitalpathsatorabovetheprimaryrate".[18]ETSIEG201212(V1.2):"ElectricalSafety;Classificationofinterfacesforequipmenttobeconnectedtotelecommunicationnetworks".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thedefinitionsgiveninITU-TRecommendationI.113[4]apply,inparticularforthedefinitionsofidlecell,validcellandinvalidcell.Inaddition,thefollowingdefinitionapplies:tobedefined:theseitemsorvaluesarenotyetspecified.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:AIActivationIndicationAISAlarmIndicationSignalATMAsynchronousTransferModeBERBitErrorRateB-ISDNBroadbandIntegratedServicesDigitalNetworkB-NTB-ISDNNetworkTerminationB-TAB-ISDNTerminalAdaptorB-TEB-ISDNTerminalEquipmentBIPBitInterleavedParityB-UNIBroadbandUNICATVCAbleTeleVisionCECCellErrorControlCICorrectionIndicationCLPCellLossPriorityCMICodedMarkInversionCRCCyclicRedundancyCheckDIDeactivateIndicationDSSDistributedSampleScramblerEDCErrorDetectionCodeEIErrorIndicationEMCElectromagneticCompatibilityEMIElectroMagneticInterferenceHECHeaderErrorControlISDNIntegratedServicesDigitalNetworkLANLocalAreaNetworkSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)9LCDLossofCellDelineationLOMLossOfMaintenancecellLOSLossOfSignalLSBLeastSignificantBitMAMediumAdaptorMBSMonitoringBlockSizeMPHManagementPhysicalHeaderMSBMostSignificantBitNRZNonReturntoZeroOAMOperationAndMaintenanceOCDOutofCellDelineationOSIOpenSystemsInterconnectionP-AISPathAlarmIndicationSignalPh-SAPPhysicallayerServiceAccessPointPHPhysicalHeaderPMPhysicalMediumppmpartspermillionPRBSPseudo-RandomBinarySequencePSNPhysicallayerSequenceNumberRDIRemoteDefectIndicationREBRemoteErroredBlocksSDHSynchronousDigitalHierarchySTISurfaceTransferImpedanceTCTransmissionConvergenceTFVTerminalFailureVoltageUNIUser-NetworkInterfaceVCIVirtualChannelIdentifierVPIVirtualPathIdentifier4Referenceconfigurationattheuser-networkinterface4.1FunctionalgroupsandreferencepointsThereferenceconfigurationsdefinedforIntegratedServicesDigitalNetwork(ISDN)basicaccessandprimaryaccessareconsideredgeneralenoughtobeapplicabletoallaspectsoftheB-ISDNaccesses.Figure1showstheB-ISDNreferenceconfigurations,whichcontainthefollowing:-functionalgroups:B-NT1,B-NT2,B-TE1,TE2,B-TE2,andB-TA;-referencepoints:TB,SBandR.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)10B-TE1B-NT1B-TAReferencepointSBRSBFunctionalgroupB-TABroadbandTerminalAdaptorB-TEBroadbandTerminalEquipmentB-NTBroadbandNetworkTerminationB-NT2TBTE2orB-TE2Figure1:B-ISDNreferenceconfigurationsInordertoclearlyillustratethebroadbandaspects,thenotationsforreferencepointsandforfunctionalgroupswithbroadbandcapabilitiesareappendedwiththeletterB(e.g.B-NT1,TB).ThebroadbandfunctionalgroupsareequivalenttothefunctionalgroupsdefinedinISDN.InterfacesattheRreferencepointmayormaynothavebroadbandcapabilities.InterfacesatreferencepointsSBandTBwillbestandardized.TheseinterfaceswillsupportallISDNservices.4.2ExamplesofphysicalrealizationsFigure2givesexamplesofphysicalconfigurationsillustratingcombinationsofphysicalinterfacesatvariousreferencepoints.TheexamplescoverconfigurationsthatcouldbesupportedbystandardizedinterfacesatreferencepointsSBandTB.Otherconfigurationsmayalsoexist.Forexample,physicalconfigurationsofB-NT2maybedistributed,orusesharedmedium,tosupportLocalAreaNetwork(LAN)emulationandotherapplications.Figure3illustratespossiblephysicalconfigurations,butdoesnotprecludealternativeconfigurations.WhetherasingleinterfaceattheSBreferencepointcancoverdifferentconfigurations,asillustratedinfigure3,isforfurtherstudy.Figure2issubdividedintoseparateitemsasfollows:-figures2a)and2b)showseparateinterfacesattheSBandTBreferencepoints;-figures2c)and2d)showaninterfaceatSBbutnotatTB;-figures2e)and2f)showaninterfaceatTBbutnotatSB;-figures2g)and2h)showseparateinterfacesatS,SBandTB;-figures2i)and2j)showinterfacesatSBandTBwhicharecoincident.Additionally,figures2b),2d),2f),2h)and2j)showaninterfaceatreferencepointR.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)11B-NT2TSB-NT1BBa)B-TE1B-NT2TSB-NT1BBB-TARb)TE2orB-TE2ConfigurationswhereB-ISDNphysicalinterfacesoccuratreferencepointsSBandTBSBc)B-NT1B-NT2+B-TE1SBB-TARd)B-NT1B-NT2+TE2orB-TE2NoteConfigurationswhereB-ISDNphysicalinterfacesoccuratreferencepointSBonlyB-NT2B-NT1+e)B-TETBTB-NT1BB-TARB-NT2+f)TE2orB-TE2ConfigurationswhereB-ISDNphysicalinterfacesoccuratreferencepointTBonlyB-NT2TSB-NT1BSBRh)TATE2B-TE1B-NT2TSB-NT1BTE1g)B-TE1SBConfigurationswhereB-ISDNandISDNphysicalinterfacesoccuratreferencepointsS,SBandTBB-NT1RB-TAj)TE2orB-TE2SandTcoincidentBBB-NT1B-TE1i)SandTcoincidentBBConfigurationswhereasingleB-ISDNphysicalinterfaceoccursatalocationwherebothreferencepointsSBandTBcoincideEquipmentimplementingfunctionalgroupsPhysicalinterfaceatthedesignatedreferencepointNOTE:TheneededforanaccesstoaTBreferencepointbetweenB-NT1andB-NT2isforfurtherstudy.Figure2:ExamplesofphysicalconfigurationsforbroadbanduserapplicationsSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)12a)centralizedB-NT2configuration:B-TE1B-TE1B-TE1B-NT2B-NT1TBSBSBSBb)distributedB-NT2configurations:b1)genericconfigurationWWMAMAWMA(note1)SBSBRTE2orB-TE2B-TAB-NT1B-NT2MAB-TARTE2orB-TE2B-TE1TB(note2)b2)physicalconfigurations(note1)MAB-TE1B-NT1WWTBTBMAMAB-TE1SBSBB-NT1B-TE1SBWWWWB-TE1B-TE1MAMAMAMASBSB(note1)Figure3(sheet1/2):ExamplesofphysicalconfigurationsformultipointapplicationsSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)13c)multi-accessB-TEconfigurations:c1)genericconfigurations(note7)TBB-NT1B-NT2SBB-TE*B-TE*B-TE*SSBSSB(note3)c2)physicalconfigurations(note5)(note4)(note6)B-NT2B-NT1SSBSSBSBTBB-TE*B-TE*B-TE*SBB-NT2B-NT1SSBSSBSBTBB-TE*B-TE*B-TE*(note5)(note4)SSBSSBSSBSSBSSBSSBSBSBSBB-NT2B-NT1TBB-TE*B-TE*B-TE*B-TE*B-TE*B-TE*B-TE*B-TE*B-TE*NOTE1:MediumAdaptor(MA):accommodatesthespecifictopologyofthedistributedB-NT2.TheinterfaceatWmayincludetopologydependantelementsandmaybeanon-standardizedinterface.NOTE2:TherewillbeaphysicallinkbetweenthesetwoMAsinthecaseofringconfigurations.NOTE3:TherewillbeaphysicallinkbetweenB-TE*andB-NT2inthecaseofringconfigurations.NOTE4:TheB-TE*includessharedmediumaccessfunctions.NOTE5:ThemeasurablephysicalcharacteristicsoftheSSBinterfaceareidenticaltothoseoftheSBinterface.Thefunctionalcharacteristicsoftheinterface,however,maybeasupersetofthoseattheSBinterface.NOTE6:TheB-NT2maybenullinthecaseofcommonalitybetweenSBandTB.NOTE7:Additionalterminationfunctions(e.g.forloopbackinbusconfiguration)andOAMfunctionsmaybenecessaryformulti-accessB-TEconfigurations.Requirementsandimplementationsofthesefunctionsareforfurtherstudy.Figure3(sheet2/2):ExamplesofphysicalconfigurationsformultipointapplicationsSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)144.3BasiccharacteristicsoftheinterfacesatTBandSBreferencepoints4.3.1Characteristicsoftheinterfacesat155520kbit/s4.3.1.1InterfaceattheTBreferencepointThereisonlyoneinterfaceperB-NT1attheTBreferencepoint.Theoperationofthephysicalmediumispoint-to-pointinthesensethatthereisonlyonesink(receiver)infrontofonesource(transmitter).Point-to-multipointconfigurationsatTBatAsynchronousTransferMode(ATM)andhigherlayersareforfurtherstudy.4.3.1.2InterfaceattheSBreferencepointOneormoreSBinterfacesperB-NT2arepresent.TheinterfaceattheSBreferencepointispoint-to-pointatthephysicallayerinthesensethatthereisonlyonesink(receiver)infrontofonesource(transmitter)andmaybepointtomultipointattheotherlayers.4.3.1.3RelationshipbetweeninterfacesatSBandTBConfigurationsdescribedinfigures2i)and2j)requirethattheinterfacespecificationsatTBandSBshouldhaveahighdegreeofcommonality,inordertoensurethatasimplebroadbandterminalmaybeconnecteddirectlytotheTBinterface.Thefeasibilityofachievingtheneededcommonalityisforfurtherstudy.4.3.2Characteristicsoftheinterfacesat622080kbit/s4.3.2.1InterfaceatTBreferencepointThereisonlyoneinterfaceperB-NT1attheTBreferencepoint.Theoperationofthephysicalmediumispoint-to-pointinthesensethatthereisonlyonesink(receiver)infrontofonesource(transmitter).Point-to-multipointconfigurationsatTBatATMandhigherlayersareforfurtherstudy.4.4RelationshipbetweenISDNinterfacesFigures2g)and2h)showconfigurationswhereB-ISDNandISDNinterfacesmayoccuratSBandSrespectively.Inthiscase,B-NT2functionalitieshavetoensuretheinterfacecapabilitiesforbothSandSB.OtherconfigurationsforsupportingterminalsattheinterfaceattheSreferencepointmayexist.4.5FunctionalgroupscharacteristicsListsoffunctionsforeachfunctionalgrouparegivenbelow.Eachparticularfunctionisnotnecessarilyrestrictedtoasinglefunctionalgroup.Forexample,"interfacetermination"functionsareincludedinthefunctionlistsofB-NT1,B-NT2andB-TE.ThefunctionlistsforB-NT1,B-NT2,B-TEandB-TAarenotexhaustive.Notallspecificfunctionsinafunctionalgroupneedtobepresentinallimplementations.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)154.5.1Networktermination1forB-ISDNThisfunctionalgroupincludesfunctionsbroadlyequivalenttolayer1oftheOpenSystemInterconnection(OSI)referencemodel.ExamplesofB-NT1functionsare:-linetransmissiontermination;-transmissioninterfacehandling;-celldelineation;-OAMfunctions.4.5.2Networktermination2forB-ISDN(B-NT2)Thisfunctionalgroupincludesfunctionsbroadlyequivalenttolayer1andhigherlayersoftheITU-TRecommendationX.200[11]referencemodel.B-NT2canbenullinthecaseofcommonalitybetweenTBandSB.ExamplesofB-NT2functionsare:-adaptationfunctionsfordifferentmediaandtopologies(MAfunctions);-functionsofadistributedB-NT2;-celldelineation;-concentration;-buffering;-multiplexing/demultiplexing;-resourceallocation;-usageparametercontrol;-adaptationlayerfunctionsforsignalling(forinternaltraffic);-interfacehandling(fortheTBandSBinterfaces);-OAMfunctions;-signallingprotocolhandling;-switchingofinternalconnections.B-NT2implementationsmaybeconcentratedordistributed.Inaspecificaccessarrangement,theB-NT2mayconsistonlyofphysicalconnections.Whenpresent,implementationsoftheB-NT2arelocallypowered.4.5.3TerminalequipmentforB-ISDN(B-TE)Thisfunctionalgroupincludesfunctionsbroadlybelongingtolayer1andhigherlayersoftheITU-TRecommendationX.200[11]referencemodel.ExamplesofB-TEfunctionsare:-user/useranduser/machinedialogueandprotocol;-interfaceterminationandotherlayer1functions;-protocolhandlingforsignalling;-connectionhandlingtootherequipments;-OAMfunctions.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)16ThepossibilityofpoweringtheB-TEviatheSBinterfaceisforfurtherstudy.4.5.3.1Terminalequipmenttype1forB-ISDN(B-TE1)ThisfunctionalgroupincludesfunctionsbelongingtotheB-TEfunctionalgroupwithaninterfacethatcomplieswiththeB-ISDNSBand/orTBinterfaceENs.4.5.3.2Terminalequipmenttype2forB-ISDN(B-TE2)ThisfunctionalgroupincludesfunctionsbelongingtothefunctionalgroupB-TEbutwithabroadbandinterfacethatcomplieswithinterfacerecommendationsotherthantheB-ISDNinterfacerecommendationsorinterfacesnotincludedinITU-TRecommendations.4.5.4TerminaladapterforB-ISDN(B-TA)Thisfunctionalgroupincludesfunctionsbroadlybelongingtolayer1andhigherlayersoftheITU-TRecommendationX.200[11]referencemodelthatallowaTE2oraB-TE2terminaltobeservedbyaB-ISDNuser-networkinterface.5Usernetworkinterfacespecifications5.1InterfacelocationwithrespecttoreferenceconfigurationAninterfacepointIaisadjacenttotheB-TEortheB-NT2ontheirnetworkside;interfacepointIbisadjacenttotheB-NT2andtotheB-NT1ontheiruserside(seefigure4).B-TEB-NT2B-NT1BSTBIabIIabIFigure4:ReferenceconfigurationatreferencepointsSBandTB5.2InterfacelocationwithrespecttothewiringconfigurationTheinterfacepointsarelocatedbetweenthesocketandtheplugoftheconnectorattachedtotheB-TE,B-NT2orB-NT1.Thelocationoftheinterfacepointisshowninfigure5.Inthepresentdocument,theterm"B-NT"isusedtoindicatenetworkterminatinglayer1aspectsofB-NT1andB-NT2functionalgroups,andtheterm"TE"isusedtoindicateterminalterminatinglayer1aspectsofB-TE1,B-TAandB-NT2functionalgroups,unlessotherwiseindicated.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)17connectingcordWiringatthecustomerpremisesB-TEB-NTIabI(note)NOTE:Thelengthoftheconnectingcordcanbezero.Figure5:Wiringconfiguration6Serviceandlayeringaspectsofthephysicallayer6.1ServicesprovidedtotheATM-layerThephysicallayerprovidesforthetransparenttransmissionofATM-PDUsbetweenPhysicallayerServiceAccessPoints(Ph-SAP).TheATM-PDUiscalledATMcell.TheATMcellisdefinedinITU-TRecommendationI.361[6].AsnoaddressingisimplementedinthephysicallayeronlyasinglePh-SAPcanexistattheboundarybetweenphysicallayerandATMlayer.TheinterarrivaltimebetweencellspassedtotheATMlayerisnotdefined(asynchronoustransmission).ThephysicallayerprovidestheATMlayerwithtiminginformation.6.2ServiceprimitivesexchangedwiththeATMlayerTheserviceprimitivesbetweenphysicallayerandATMlayeraredefinedinITU-TRecommendationI.361[6],subclause3.2.6.3SublayeringofthephysicallayerThephysicallayerissubdividedintotwosublayers:-thePhysicalMedium(PM)sublayer;-theTransmissionConvergence(TC)sublayer.NoserviceaccesspointandserviceprimitivesaredefinedbetweenthePMandtheTCsublayers.ThefunctionsoftheindividualsublayeraredefinedinITU-TRecommendationI.321[5].SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)187PhysicalmediumcharacteristicsoftheUNIat155520kbit/s7.1CharacteristicsoftheinterfaceattheTBandSBreferencepoints7.1.1BitrateandinterfacesymmetryThebitrateoftheinterfaceis155520kbit/s.Theinterfaceissymmetric,i.e.ithasthesamebitrateinbothtransmissiondirections.Thenominalbitrateinfreerunningclockmodeshallbe155520kbit/swithatoleranceof±20ppm.7.1.2PhysicalcharacteristicsBothopticalandelectricalinterfacesarerecommended.Theimplementationselecteddependsonthedistancetobecoveredanduserrequirementsarisingfromthedetailsoftheinstallation.7.1.2.1Electricalinterface7.1.2.1.1InterfacerangeThemaximumrangeoftheinterfacedependsonthespecificattenuationofthetransmissionmediumused.Forexampleamaximumrangeofabout100mformicrocoax(4mmdiameter)and200mforCableTelevision(CATV)type(7mmdiameter)cablescanbeachieved.7.1.2.1.2TransmissionmediumTwocoaxialcables,oneforeachdirection,shallbeused.Thewiringconfigurationshallbepoint-to-point.Theimpedanceshallbe75Ωwithatoleranceof±5%inthefrequencyrange50MHzto200MHz.TheattenuationoftheelectricalpathbetweentheinterfacepointsIaandIbshallbeassumedtofollowanapproximateflawandtohaveamaximuminsertionlossof20dBatafrequencyof155520kHz.7.1.2.1.3ElectricalparametersatinterfacepointsIaandIbThedigitalsignalpresentedattheoutputportandtheportimpedanceshallconformtoETSIETS300166[2]fortheinterfaceat155520kbit/s.ThedigitalsignalpresentedattheinputportandtheportimpedanceshallconformtoETSIETS300166[2]fortheinterfaceat155520kbit/s,modifiedbythecharacteristicsoftheinterconnectingcoaxialpair.7.1.2.1.4ElectricalconnectorsThepresentationofinterfacepointIbatB-NT1orB-NT2shallbeviaasocket.ThepresentationofinterfacepointIaatB-TEorB-NT2shallbeusingeither:a)asocket,i.e.theconnectionshallbemadetotheequipmenttowardthenetworkwithacablewithplugsonbothends;orb)anintegralconnectingcordwithplugonthefreeend.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)197.1.2.1.5LinecodingThelinecodingshallbeCodedMarkInversion(CMI),seeETSIETS300166[2].7.1.2.1.6ElectromagneticCompatibility/Interference(EMC/EMI)requirementsShieldingpropertiesofconnectorsandcablesaredefinedbythespecificationoftherespectivevaluesfortheSurfaceTransferImpedance(STI).ThetemplateindicatingthemaximumSTIvaluesforCATVcablesisgiveninfigure6.Forconnectors,thesetemplatevaluesshallbemultipliedby10(20dB).TheimmunityoftheinterfaceagainstinducednoiseonthetransmissionmediumshouldbespecifiedbymeansofaTerminalFailureVoltage(TFV),whichisoverlaidtothedigitalsignalattheoutputport.Figure7showsapossiblemeasurementconfiguration.ThereceivershouldtolerateasinusoidalTFVwiththevaluesdefinedinfigure8andtable1withoutdegradationoftheBitErrorRatio(BER)performance.BlogSTIAf012logfrequencyff10frequency(MHz):STIvalue(ΩΩΩΩ/m):f0=0,1A=0,01f1=100f2=1000B=1NOTE:Theapplicabilityofthesevaluesformicrocoaxcablesisforfurtherstudy.Figure6:MaximumSTIvaluesasafunctionoffrequencyTransmitsignalgeneratorTransmissioncableReceiverundertestBERAnalyserTFVGenerator+Figure7:MeasurementconfigurationSIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)20TFVleveldBVF0frequency(MHz)1F2FA1A2Figure8:TerminalFailureVoltage(TFV)frequencyresponseTable1:TFVvaluesfrequency(MHz)TFVamplitude(dBV)(0dBV=1Vop)F0=1F1=200A1≥-17F2=400A2≥-117.1.2.2Opticalinterface7.1.2.2.1AttenuationrangeTheattenuationoftheopticalpathbetweenthespecificationpointsSandR,asdefinedinETSIETS300232[3],shallbeintherangeof0dBto7dB(seesubclause7.1.2.2.3.3).7.1.2.2.2TransmissionmediumThetransmissionmediumshallconsistoftwosinglemodefibresaccordingtoITU-TRecommendationG.652[1],oneforeachdirection.7.1.2.2.3Opticalparameters7.1.2.2.3.1LinecodingThelinecodingshallbebinaryNonReturntoZero(NRZ).Theconventionusedforopticallogiclevelis:-emissionoflightforabinaryONE;-noemissionoflightforabinaryZERO.TheextinctionratioshallbeinaccordancewithETSIETS300232[3],applicationcodeI-1.7.1.2.2.3.2OperatingwavelengthTheoperatingwavelengthshallbearound1310nm(secondwindow)andinaccordancewithETSIETS300232[3],applicationcodeI-1.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)217.1.2.2.3.3InputandoutputportcharacteristicsTheopticalparametersshallbeinaccordancewithETSIETS300232[3],applicationcodeI-1.Somenationalapplicationmayuseopticalparametersformulti-modefibres.ThespecificationpointsassociatedwithinterfacepointsIaandIbcorrespondtomeasurement"referencepoints"SandRasdefinedinETSIETS300232[3].Theopticalparametersarespecifiedforthetransmitterandreceiveratthesespecificationpointsandfortheopticalpathbetweenthesespecificationpoints,i.e.theconnectorattheinterfaceisconsideredtobepartoftheequipmentandnotpartofthefibreinstallation.7.1.2.2.4OpticalconnectorsThepresentationofinterfacepointIbatB-NT1orB-NT2shallbeviaasocket.ThepresentationofinterfacepointIaatB-TEorB-NT2shallbeusingeither:a)asocket,i.e.theconnectionshallbemadetotheequipmenttowardthenetworkwithacablewithplugsonbothends;orb)anintegralconnectingcordwithplugonthefreeend.7.1.2.2.5SafetyrequirementsForsafetyreasons,theparametersforIEC60825-1[13],Class1devicesshallnotbeexceeded,evenunderfailureconditions.7.1.2.3JitterandwanderForbothelectricalandopticalBroadbandUNI(B-UNI),theinterfaceoutputjittershallbeinaccordancewiththeappropriatelimitgiveninITU-TRecommendationG.825[15]fortheelectricalandopticalinterface.EquipmentshavinganelectricaloropticalB-UNI(e.g.B-NT1,B-NT2,B-TE)andwhichmeettheoutputjittertoleranceandthejittertransferspecificationsgiveninITU-TRecommendationsG.825[15]andG.958[16]respectively,areassuredofproperoperationwhentheinterfaceoutputjitterconformstothelimitsinITU-TRecommendationG.825[15].8PhysicalmediumcharacteristicsoftheUNIat622080kbit/s8.1CharacteristicsoftheinterfaceattheTBandSBreferencepoints8.1.1BitrateandinterfacesymmetryThebitrateoftheinterfaceinatleastonedirectionshallbe622080kbit/s.Thefollowingpossibleinterfaceshavebeenidentified:a)anasymmetricalinterfacewith622080kbit/sinonedirectionand155520kbit/sintheotherdirection;b)asymmetricalinterfacewith622080kbit/sinbothdirections.Ifoptiona)ischosen,thenthe155520kbit/scomponentshouldcomplywiththecharacteristicsasgiveninclause7.Thenominalbitrateinfreerunningclockmodeshallbe622080kbit/swithatoleranceof±20ppm.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)228.1.2PhysicalcharacteristicsForthepurposesofthepresentdocument,onlytheopticalinterfaceisconsidered.8.1.2.1AttenuationrangeTheattenuationoftheopticalpathbetweenthespecificationpointsSandRshallbeintherangeof0dBto7dB(seesubclause7.1.2.2.3.3).8.1.2.2TransmissionmediumThetransmissionmediumshallconsistoftwosinglemodefibresaccordingtoITU-TRecommendationG.652[1],oneforeachdirection.8.1.2.3Opticalparameters8.1.2.3.1LinecodingThelinecodingshallbebinaryNonReturntoZero(NRZ).Theconventionusedforopticallogiclevelis:-emissionoflightforabinaryONE;-noemissionoflightforabinaryZERO.TheextinctionratioshallbeinaccordancewithETSIETS300232[3],applicationcodeI-4.8.1.2.3.2OperatingwavelengthTheoperatingwavelengthshallbearound1310nm(secondwindow)andinaccordancewithETSIETS300232[3],applicationcodeI-4.8.1.2.3.3InputandoutputportcharacteristicsTheopticalparametersshallbeinaccordancewithETSIETS300232[3],applicationcodeI-4.ThespecificationpointsassociatedwithinterfacepointsIaandIbcorrespondtomeasurementreferencepointsSandRasdefinedinETSIETS300232[3].Theopticalparametersarespecifiedforthetransmitterandreceiveratthesespecificationpointsandfortheopticalpathbetweenthesespecificationpoints,i.e.theconnectorattheinterfaceisconsideredtobepartoftheequipmentandnotpartofthefibreinstallation.8.1.2.4OpticalconnectorsThepresentationofinterfacepointIbatB-NT1orB-NT2shallbeviaasocket.ThepresentationofinterfacepointIaatB-TEorB-NT2shallbeusingeither:a)asocket,i.e.theconnectionshallbemadetotheequipmenttowardthenetworkwithacablewithplugsonbothends;orb)anintegralconnectingcordwithplugonthefreeend.8.1.2.5SafetyrequirementsForsafetyreasons,theparametersforIEC60825-1[13],Class1devicesshallnotbeexceededevenunderfailurecondition.SIST EN 300 299 V1.3.2:2003

ETSIETSIEN300299V1.3.2(2000-05)238.1.2.6JitterandwanderForbothelectricalandopticalB-UNI,theinterfaceoutputjittershallbeinaccordancewiththeappropriatelimitgiveninITU-TRecommendationG.825[15]fortheelectricalandopticalinterface.EquipmentshavinganelectricaloropticalB-UNI(e.g.B-NT1,B-NT2,B-TE)andwhichmeettheoutputjittertoleranceandthejittertransferspecificationsgiveninITU-TRecommendationsG.825[15]andG.958[16]respectively,areassuredofproperoperationwhentheinterfaceoutputjitterconformstothelimitsinITU-TRecommendationG.825[15].9Powerfeeding9.1ProvisionofpowerTheprovisionofpowertotheB-NT1viatheUNInetworkinterfaceisoptional.IfthepowerisprovidedviatheUNI,thefollowingconditionsshallapply:-aseparatepairofwiresshallbeusedfortheprovisionofpowertotheB-
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