SIST EN 300 463 V1.1.2:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Transmission and Multiplexing (TM); Requirements of passive Optical Access Networks (OANs) to provide services up to 2 Mbit/s bearer capacity33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 300 463 Version 1.1.2SIST EN 300 463 V1.1.2:2003en01-december-2003SIST EN 300 463 V1.1.2:2003SLOVENSKI
STANDARD
ETSIEN300463V1.1.2(2000-06)EuropeanStandard(Telecommunicationsseries)TransmissionandMultiplexing(TM);RequirementsofpassiveOpticalAccessNetworks(OANs)toprovideservicesupto2Mbit/sbearercapacitySIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)2ReferenceREN/TM-01088Keywordsaccess,bearer,network,optical,transmissionETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°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:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.94ConfigurationofanOAN.104.1Topologicalandfunctionalissues.104.2Servicecapability.135ONU.135.1Descriptionoffunctions.135.1.1ONUcoreshell.145.1.2ONUserviceshell.145.1.3ONUcommonshell.145.2ONUdimensions.145.3UsertoNetworkInterfaces(UNIs).155.4ONUpowerconsiderations.166ODN.166.1GeneralODNrequirements.166.2ReachlimitationsandsplitratiosoftheODN.177OLT.177.1Descriptionoffunctions.187.1.1OLTcoreshell.187.1.2OLTserviceshell.197.1.3OLTcommonshell.197.2OLTdimensions.197.3SNIs.208SpecificattributesofOANs.208.1Transmissionmethod.208.2OperatingwavelengthrangeforanOAN.208.2.1SDM.218.2.2TCM.218.2.3WDM.218.2.4FDM.218.3Signaltransferdelay.219Timingandsynchronization.229.1Synchronizationarchitecture.229.2ProtectionandONUtiming.239.3Synchronizationinterfaces.239.3.1Jitterandwandertolerance.239.4Network-sideinterfacesforsynchronousservices.239.4.1Jitterandwandertolerance.239.4.2Jitterandwandergeneration.239.5User-sideinterfacesforsynchronousservices.249.5.1Jitterandwandertolerance.249.5.2Jitterandwandergeneration.249.6Timingrequirementsforasynchronousservices.2410OAM.2410.1GeneralOAMrequirements.24SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)410.2Lineconfigurationandtesting.2510.3OANoperation.2511SecurityofOANs.2611.1Generalinformation.2611.2Identificationandauthentication.2611.3Accesscontrol.2711.4Accountabilityandaudit.2711.5Accuracy.2711.6Availability.2711.7Dataexchange.2711.8Layersofphysicalsecurity.2811.8.1Physicalsecurityfunction.2811.8.2Transmissionsystemsecurityfunction.2811.8.3Servicesecurityfunction.2912Safety.2913Reliabilityandavailability.2914UpgradeofOANs.3014.1ODNconsiderations.3014.2ONUconsiderations.31AnnexA(informative):RelationshipbetweentypesandclassesforONUs.32AnnexB(informative):AnexamplepowerconsumptionforanOAN.33AnnexC(informative):Signaltransferdelaymeasurementtechnique.35AnnexD(informative):FrameworktocapturetheOAMrequirements.36D.1AnalysisofOAMrequirementsbyfunctionalsub-systems.36D.2Examplesforlinecircuitsupervision.37D.3AnalysisofOAMrequirementsbyfunctionalcategory.38D.3.1Accessandsecurity.38D.3.2Configurationandresourcemanagement.38D.3.3Performancemanagement.39D.3.4Event(alarm)management.40D.3.5Financialaccountingmanagement.41Bibliography.42History.43SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Thepresentdocumentdescribescosteffectiveandflexibleaccessnetworksusingopticalfibretechnologyandisdesignedtoprovidebothservicestomeetthecurrentdemandsandaninfrastructure,whichisabletosatisfytherequirementsofthefuture.NationaltranspositiondatesDateoflatestannouncementofthisEN(doa):30September2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2001DateofwithdrawalofanyconflictingNationalStandard(dow):31March2001SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)61ScopeThepresentdocumentdescribescosteffectiveandflexibleaccessnetworksusingopticalfibretechnology.Thepresentdocumentisdesignedtoprovidebothservicestomeetthecurrentdemandsandaninfrastructure,whichisabletosatisfytherequirementsofthefuture.ThepresentdocumentdescribesthecharacteristicsofanOpticalAccessNetwork(OAN)withthecapabilityoftransportinginteractiveservices,basedon64kbit/sbearercapabilities,betweentheUserNetworkInterface(UNI)andthelocalexchange.ThepresentdocumentconsidersanOANcapableofprovidingbusinessandresidentialcustomerswitharangeofservices(upto2Mbit/s)overapassivesplitopticalnetwork.Distributiveservices(e.g.cabletelevision)areoutsidethescopeofthepresentdocument.TheOANdescribedinthepresentdocumenthasconsideredtherequirementfortheaccessnetworktoadapttothechangingrequirementsofindividualcustomersintermsofcapacity,flexibilityandtypesofservicesofferedwithouttheneedfornetworkoperatorstoprovideservicespecificoverlaynetworks.TheconsideredsystemswithinthepresentdocumentarebasedonTimeDivisionMultipleAccess(TDMA)and/orSubcarrierMultipleAccess(SCMA)methods.Oneandtwofibresystemsaredescribed.ThepresentdocumentconsidersOANswheretheOpticalDistributionNetwork(ODN)isbasedonpoint-to-multipointtreeandbranchoptionsasdescribedinETS300681[4].Thepresentdocumentisnotacompletesystemdefinition.Itidentifiesaspectsthatcanbedefinedwithoutpreventingtransmissioninnovation.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ECSYN287(1990):"Proposalforthecouncildirectiveconcerningtheprotectionofindividualsinrelationtotheprocessingofpersonaldata".[2]ECSYN288(1990):"Proposalforthedirectiveconcerningtheprotectionofpersonaldataandprivacyinthecontextofpublicdigitaltelecommunicationnetworks,inparticulartheintegratedservicesdigitalnetwork(ISDN)andpublicdigitalmobilenetworks".[3]EN60950:"Safetyofinformationtechnologyequipment,includingelectricalbusinessequipment".[4]ETSIETS300681(1996):"TransmissionandMultiplexing(TM);OpticaldistributionnetworkforOpticalAccessNetworks(OANs)".[5]ETSIETS300736:"TransmissionandMultiplexing(TM);OperationandmaintenanceofOpticalAccessNetworks(OANs)".[6]ETSIETR080:"TransmissionandMultiplexing(TM);IntegratedServicesDigitalNetwork(ISDN)basicrateaccess;Digitaltransmissionsystemonmetalliclocallines".[7]ETSIETS300011:"IntegratedServicesDigitalNetwork(ISDN);Primaryrateuser-networkinterface;Layer1specificationandtestprinciples".SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)7[8]ETSIETS300012:"IntegratedServicesDigitalNetwork(ISDN);Basicuser-networkinterface;Layer1specificationandtestprinciples".[9]ETSIETS300019:"EquipmentEngineering(EE);Environmentalconditionsandenvironmentaltestsfortelecommunicationsequipment".[10]ETSIETS300233:"IntegratedServicesDigitalNetwork(ISDN);AccessdigitalsectionforISDNprimaryrate".[11]ETSIETS300288:"BusinessTeleCommunications(BTC);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);Networkinterfacepresentation".[12]ETSIETS300324:"SignallingProtocolsandSwitching(SPS);VinterfacesatthedigitalLocalExchange(LE);V5.1interfaceforthesupportofAccessNetwork(AN)".[13]ETSIETS300347:"SignallingProtocolsandSwitching(SPS);VinterfacesatthedigitalLocalExchange(LE);V5.2interfaceforthesupportofAccessNetwork(AN)".[14]ETSIEN300376-1:"TelecommunicationsManagementNetwork(TMN);Q3interfaceattheAccessNetwork(AN)forconfigurationmanagementofV5interfacesandassociateduserports;Part1:Q3interfacespecification".[15]ETSIEN300378-1:"TelecommunicationsManagementNetwork(TMN);Q3interfaceattheAccessNetwork(AN)forfaultandperformancemanagementofV5interfacesandassociateduserports;Part1:Q3interfacespecification".[16]ETSIETS300462-2:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part2:Synchronizationnetworkarchitecture".[17]ETSIETS300462-5:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part5:TimingcharacteristicsofslaveclockssuitableforoperationinSynchronousDigitalHierarchy(SDH)equipment".[18]ETSIETS300418:"BusinessTeleCommunications(BTC);2048kbit/sdigitalunstructuredandstructuredleasedlines(D2048UandD2048S);Networkinterfacepresentation".[19]ITU-TRecommendationG.703:"Physical/electricalcharacteristicsofhierarchicaldigitalinterfaces".[20]ITU-TRecommendationG.704:"Synchronousframestructuresusedat1544,6312,2048,8488and44736kbit/shierarchicallevels".[21]ITU-TRecommendationG.803:"Architecturesoftransportnetworksbasedonthesynchronousdigitalhierarchy(SDH)".[22]ITU-TRecommendationG.823:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthe2048kbit/shierarchy".[23]ITU-TRecommendationG.832:"TransportofSDHelementsonPDHnetworks:Frameandmultiplexingstructures".[24]ITU-TRecommendationI.430:"Basicuser-networkinterface-Layer1specification".[25]ITU-TRecommendationM.3010:"Principlesforatelecommunicationsmanagementnetwork".[26]ECITSEC:"InformationTechnologySecurityCriteria(ITSEC)".[27]ETSIEG201212:"ElectricalSafety;Classificationofinterfacesforequipmenttobeconnectedtotelecommunicationnetworks".SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)83Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingdefinitionsapply:accesslink:wholeoftransmissionmeansbetweenagivennetworkinterfaceandasingleuserinterface.TheconceptofaccesslinkisusedinordertoallowafunctionalandproceduraldescriptionandadefinitionofthenetworkrequirementsNOTE1:Theuser-sideandthenetwork-sideoftheaccesslinkarenotidenticalandthereforetheaccesslinkisnotsymmetrical.AdaptationUnit(AU):providesadaptationfunctionsbetweentheOpticalNetworkUnit(ONU)andtheuser-sidediplexworking:bi-directionalcommunicationusingadifferentwavelengthforeachdirectionoftransmissionoverasinglefibreduplexworking:bi-directionalcommunicationusingthesamewavelengthforbothdirectionsoftransmissionoverasinglefibreFieldReplaceableUnit(FRU):lowestlevelofmaintenancespareandwilltypicallybeaplug-incard.ThemodulesofanOpticalLineTermination(OLT)andONUshouldbeFRUsfullaccess:givennootherconnections,anyslotononesideoftheconcentratormaybeconnectedtoanyslotontheothersideoftheconcentratormultiplexingstatic:systemofmultiplexingwheretherelationshipbetweenthepositionofthetributariestothemultiplexedformat(channels)ispredeterminedandfixedmultiplexingdynamic:systemofmultiplexingwheretherelationshipbetweenthepositionofthetributariestothemultiplexedformat(channels)isflexible.Italsoallowsfortributariestobeaggregatedwheretherearemoretributariesthanavailablechannelsandthepossibilitytovarythebandwidthtontimesthecapacityofthechannelsnon-blocking:anyallowableconnectionmaybemadeatanytime,regardlessoftheorderinwhichconnectionsareestablishedorremoved(Anallowableconnectionassumesthattherespectiveslotsarefree)OpticalAccessNetwork(OAN):setofaccesslinkssharingthesamenetwork-sideinterfacesandsupportedbyopticalaccesstransmissionsystemsNOTE2:TheOANmayincludeanumberofODNsconnectedtothesameOLT.OpticalDistributionNetwork(ODN):providestheopticaltransmissionmeansfromtheOLTtowardstheusers,andviceversaOpticalLineTermination(OLT):providesthenetwork-sideinterfaceoftheOANandisconnectedtooneormoreODNsOpticalNetworkUnit(ONU):provides(directlyorremotely)theuser-sideinterfaceoftheOANandisconnectedtotheODNopticalfilter:devicefortheselectionofopticalsignalsatopticalspecificwavelengthsopticalpowersplitter:devicethathasninputswithkoutputs,wheren=1tokandk2passivecomponent:componentpartoftheODNthatdoesnotrequireexternalpower,i.e.fibre,splitter,filterpoint-to-multipoint:transmissionsystem,whichcanhaveoneinputoroutputatoneendwithmultipleinputsoroutputsattheotherendPassiveOpticalNetwork(PON):subsetofanODNandreferstoapoint-to-multipointoptionSpaceDivisionMultiplexing(SDM):bi-directionalmultiplexingusingdifferentfibresforupanddownstreamsignalsSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)9SubCarrierMultiplexing(SCM):multiplexingmultipleelectricalfrequenciesontoasinglefibreatasinglewavelengthtoprovideanindividualfrequencytoeachmultipointtopointpathserialnumber:referencenumberassignedtoanobject,component,etc.servicechannel:eachbearerserviceisallocatedaservicechannelinthePONsystems.e.g.a64kbit/schanneltosupportthePublicSwitchedTelephoneNetwork(PSTN)ServiceUnit(SU):FRUthatsupportsserviceinterface(ServiceUnit(SU))function(s)simplexworking:communicationwhichusesadifferentfibreforeachdirectionoftransmissionTimeCompressionMultiplexing(TCM):bi-directionalmultiplexingusingdifferenttimeslotsforupanddownstreamsignalsTimeDivisionMultiplexing(TDM):multiplexinginformationontofixedtimerangesTributaryUnit(TU):FRUwithoneormoretributaryinterfacefunctionsWavelengthDivisionMultiplexing(WDM):bi-directionalmultiplexingusingdifferentopticalwavelengthforupanddownstreamsignals3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ACAlternatingCurrentA/DAnaloguetoDigital(conversion)ANAccessNetworkATMAsynchronousTransferModeAUAdaptationUnitBABasicAccessB-ISDNBroadbandIntegratedServicesDigitalNetworkDCDirectCurrentD/ADigitaltoAnalogue(conversion)D2048S2048kbit/sdigitalstructuredONPleasedlineD2048U2048kbit/sdigitalunstructuredONPleasedlineFDMFrequencyDivisionMultiplexingFITLFibreInTheLoopFRUFieldReplaceableUnitISDNIntegratedServicesDigitalNetworkISDN-BAISDN-BasicAccessITSECInformationTechnologySecurityCriteriaMTBFMeanTimeBetweenFailuresMTTRMeanTimeToRepairNNINetworktoNetworkInterfaceNTNetworkTerminationNT1NetworkTermination1OAMOperationsAdministrationandMaintenanceOANOpticalAccessNetworkODNOpticalDistributionNetworkOLTOpticalLineTerminationONPOpenNetworkProvisionONUOpticalNetworkUnitOSOperationsSystemOSIOpenSystemsInterconnectionOTDROpticalTimeDomainReflectometerPONPassiveOpticalNetworkPOTSPlainOldTelephonyServicesppmpartspermillionPRAPrimaryRateAccessPRCPrimaryReferenceClockPSTNPublicSwitchedTelephoneNetworkSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)10QANQinterfacefortheAccessNetworkSCMSubCarrierMultiplexingSCMASubCarrierMultipleAccessSDHSynchronousDigitalHierarchySDMSpaceDivisionMultiplexingSNIServiceNodeInterfaceSPFSignallingProcessingFunctionSSUSynchronizationSupplyUnitSUServiceUnitTCMTimeCompressionMultiplexingTDMTimeDivisionMultiplexingTDMATimeDivisionMultipleAccessTUTributaryUnitUIppUnitIntervalspeaktopeakUNIUserNetworkInterfaceVCVirtualContainerVFVoiceFrequencyWDMWavelengthDivisionMultiplexing4ConfigurationofanOANTheconfigurationofanOANisconsideredinthisclause.ItprovidesanintroductiontothedetailedrequirementsofanOAN.NOTE:ThefunctionalarchitectureissuesareunderstudyinETSISubTechnicalCommittee(STC)TM3.4.1TopologicalandfunctionalissuesAconfigurationforanOANisshowninfigure1.AnOANconsistsof:a)oneOLT;b)atleastoneODN;c)atleastoneONU;d)AUs.TheODNprovidestheopticaltransmissionmeansfromtheOLTtowardstheusersandviceversa.ONUsprovidetheuser-sideinterfaceoftheOANandareconnectedtotheODN.ThefunctionscomprisedbytheAUincludeadaptationoftheserviceinterfacingbetweenONUanduser(e.g.conversionofdatacommunicationprotocolsandrates)aswellastransportationoftheserviceoverthelastdropbetweentheONUanduserwhentheseinterfacesdonotcoincide(e.g.NetworkTermination1(NT1)forIntegratedServicesDigitalNetwork,BasicAccess(ISDN-BA)).ThereferencepointsUserNetworkInterface(UNI)andServiceNodeInterface(SNI)aswellastheQ3interfaceshowninfigure1.TheRandSreferencepointsaredescribedinETS300681[4].NOTE:StandardizationworkrelatedtosuchanAUisoutsidethescopeofthepresentdocument.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)11AUAccesslinkUsersideNetworksideONUS/RS/RSNIUNIONUODNOLTANSystemManagementQ3LineFigure1:ExampleconfigurationforanOANAfunctionalarchitectureoftheOANinaccordancewiththeprinciplesofITU-TRecommendationG.803[21]isshowninfigure2.ISDN-BAistheadaptedserviceshowninthisarchitecture.TheServiceNodeInterface(SNI)isaccordingtoV5.1;seeETS300324[12].ThemultiplexingoftheuserindividualD-channelsisperformedonahigherlayerandnotshowninthisstructure.ThestructureofDandD*arenotidentical.Althoughanumberofotheroptionsexist(e.g.leasedlines,V5.2,etc.)theyarenotshownonthisdiagram.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)12OpticalsectiontrailWavelength1WavelengthnFibreadaptationFibreterminationOpticalterminationE/OAdaptationODNtransmissionprotocolTTPODNtransmissionprotocoltrailPayload/ODNtransmissionprotocoladaptationBCodedringing,hook(+dial)DG.704connection(V5.1)AdaptationsofISDNBAandPOTSintoG.704(forV5.1)G.702terminationAdaptationintoPOTSlinePOTSlineterminationPOTSlineAdaptationintoISDNBAlineISDNBAterminationS/TbusAdaptationterminationS/TbusCopperlineAdaptationtermination(NT1)MediumlayerOpticallayerTransmissionsectionlayerTransmissionpathlayerD*Figure2:ExamplearchitectureconfigurationfortheOANSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)134.2ServicecapabilityTheOANshallbecapableofsupportingthefollowingservices:a)POTS;b)leasedlines;c)packetdata;d)ISDN-BA;e)ISDNPrimaryRateAccess(ISDN-PRA);f)nx64kbit/s;g)2Mbit/s(structuredorunstructured).5ONUTheONUprovidesanopticalinterfacetowardstheODNandimplementstheinterfacesatthecustomersideoftheOAN.ONUsshallbelocatedonthecustomer'spremises(fibretothehome,fibretotheoffice,fibretothebuilding)orinthefieldaspartoftheopticalaccesssection(fibretothekerb).TheONUprovidesthemeansnecessaryfordeliveringthedifferentservicesthataretobehandledbythesystem.5.1DescriptionoffunctionsFigure3showsafunctionaldescriptionoftheONU.ItisusefulforstandardizationpurposestoconsidertheONUintermsofthreeparts,thesearedefinedas:a)coreshell;b)serviceshell;c)commonshell.Thefunctionalityoftheseshellsisdescribedinsubclauses5.1.1to5.1.3.****CommonshellCoreshellServiceshellODNCustomerServiceinterfacefunctionServiceinterfacefunctionCustomerandservicesMultiplexfunctionTransmissionmultiplexfunctionODNinterfacefunctionOAMfunctionPowersupplyfunctionFigure3:ONUfunctionalblocksSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)145.1.1ONUcoreshellTheONUcoreshellincludes:a)ODNinterface;b)transmissionmultiplexing;c)customerandservicemultiplexingfunctions.TheODNinterfacefunctionprovidesasetofopticalphysicalinterfacefunctionsterminatingtherelevantsetofopticalfibresoftheODN,andincludesoptical/electricalandelectrical/opticalconversion.ThetransmissionmultiplexingfunctionprovidesthenecessaryfunctionsforevaluationandallocationoftheincomingandoutgoingsignalsfromandtotheODNInterfaceFunctionextractingandinputtingtheinformationrelevanttothisONU.Thecustomerandservicemultiplexerfunctionassembles/disassemblestheinformationfrom/tothedifferentsubscribersandconnectstheindividualserviceinterfacefunctions.5.1.2ONUserviceshellTheONUserviceshellprovidestheserviceinterfacefunctions.Theserviceinterfacefunctionsprovidethecustomerserviceinterfacesandtheiradaptationinto64kbit/sornx64kbit/s.Thefunctioncanbeprovidedforasinglecustomeroragroupofcustomers.Italsoprovidessignallingconversionfunctionsaccordingtothephysicalinterface(e.g.ringing,signalling,AnaloguetoDigital(A/D)andDigitaltoAnalogue(D/A)conversions).5.1.3ONUcommonshellTheONUcommonshellincludespowersupplyandOperationsAdministrationandMaintenance(OAM)functions.ThepowersupplyfunctionprovidesthepoweringtotheONU(e.g.AlternatingCurrent(AC)toDirectCurrent(DC)orDCtoDCconversion).Powershallbeprovidedlocally(frommains)orremotely.ThepowersupplymaybesharedbyseveralONUs.TheONUshallbecapableofoperatingviaabatteryback-upsource.TheOAMfunctionprovidesthemeanstohandletheOAMfunctionalitytoallblocksoftheONU(e.g.controlofloopbacksinthedifferentblocks).NOTE:Forlocalcontrolaninterfacemaybeprovidedfortestingpurposes.5.2ONUdimensionsTheONUdimensionsconsideredinthissubclauserefertoissuesrelatingtotheservicecapacity.AnONUisdefinedasbeingofaspecifictypeandbelongingtoaspecificclass.Fivetypesandthreeclassesaredescribed.ThetypesaredescribedintermsofnumberofPOTScircuits,whichcanbeprovidedandareshownintable1:Table1:ONUtypedescriptionMaximumnumberofPOTScircuitsthatcanbeequippedTypeI4POTSTypeII12POTSTypeIII30POTSTypeIV60POTSTypeV120POTSSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)15TheclassesofONUaredefinedbythemaximumthroughputrequiredatthecustomersideoftheONU.ThisisdefinedintermsoftheusableBchannels(whereBisa64kbit/sbearerchannel).Controlandsignallingchannelsarenotgenerallyincludedexceptwherecarriedwithinthebearerchannels(e.g.ISDNPrimaryRateAccess(ISDNPRA)).Threeclassesaredefinedasshownintable2:Table2:ONUClassdescriptionMaximumnumberofBchannelsClass14BClass232BClass364BONUtypesandclassesaboveandbelowthevaluesdescribedintables1and2havenotbeendefinedandareforfurtherstudy.ItshallbepossibletoreallocateunusedBchannelsfromoneONUtoanyotherONUuptotheirmaximumcapacity.Forexample:aclass3ONUhasamaximumthroughputof64B.Ifonly30POTSlinesarerequiredthen34BcanbereallocatedtootherONUs.ItshallbepossibletomixdifferentONUtypesandclassesonthesameODN.TherelationshipsbetweentypesandclassesaredescribedinannexA.Tocalculatetheaboveservicecapacitiesthefollowingequivalentsshallbeused:1x64kbit/s:=1analoguetelephoneaccess(POTS);=1analoguecustomeraccessforfixedconnections(leasedline);=1digitalcustomeraccessforfixedconnections64kbit/s(leasedline);=1dataaccess<64kbit/s;=1/2ISDN-BA;=1/32ISDN-PRA;=1/32digitalcustomeraccessforfixedconnections1984Mbit/s(leasedline);=1/32digitalcustomeraccessforfixedconnections2048Mbit/s(unstructuredleasedline).TheSUsoftheONUsasanexamplemaybeequippedasfollows:2analoguetelephoneaccesses(POTS)percard;2analoguefixedaccesses(leasedlines)percard;2digitalfixedaccesses64kbit/s(leasedlines)percard;1ISDN-BA(Tinterface)percard;1ISDN-BA(Lineinterface)percard;1ISDN-PRApercardand1digitalfixedaccess2Mbit/s(leasedline)percard.5.3UsertoNetworkInterfaces(UNIs)ThenarrowbandISDNandPOTSinterfaceshavebeenidentifiedandtheexistingUNIsshallbeused:analoguetelephonyservices:national;analogueleasedlineservices:national;ISDN-BA:ETS300012[8]:forISDNBA,thisalsocouldbealineinterface,wheretheNTisconnectedtotheONUusingatransmissionsystemaccordingtoETR080[6];ISDN-PRA:ETS300011[7];circuitswitchedandpacketdataservices:thecustomerinterfacefordataservicesshouldbe64kbit/saccordingtoITU-TRecommendationG.703[19];or2Mbit/saccordingtoITU-TRecommendationsG.703[19]andG.704[20].SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)16NOTE1:TheconversiontotheappropriatedatanetworkinterfacemaybeprovidedbyanAU,whichisnotpartoftheOAN.IncasetheONUisnotlocatedatthecustomers'premises,anAUaspartoftheOANisalsoneededtofacilitatethetransportofthis64kbit/sbearerchannelmadeavailableattheinterfaceoftheSUconcerned.digitalleasedlineservices:64kbit/sITU-TRecommendationG.703[19]:64kbit/sITU-TRecommendationI.430[24]:1984kbit/s:2048kbit/s:nx64kbit/s(n<30):ETS300288[11];similartoETS300012[8];ETS300418[18](D2048S);ETS300418[18](D2048U);ETS300418[18](D2048U).Fortheunstructured2048Mbit/s:InthecasewhenaSynchronousDigitalHierarchyVirtualContainer12(SDHVC12)pathisusedthisshallbeterminatedintheONU.Ajustificationmechanismhastobeusedtoprovidethepossibilityofthirdpartytiming.NOTE2:ThetransportoftheSDHVC12andtherelatedtimingdoesnotrequirestandardization.AmethodsimilartotheITU-TRecommendationG.832[23]canbeusedin2048Mbit/sorientednetworks.AnotherpossibilityisthetransportofthecompleteSDHTU12includingpointersinanOANprovidingaflexibletransmissionframe.5.4ONUpowerconsiderationsForeachONUtypetheminimum,maximumandtypicalpowerrequirementsandtheconditionsusedtocalculatethemshallbeprovided.Thespecificpoweringrequirementsofthedifferentinterfaces(asdefinedinsubclause5.3)shallbeconsidered.Powerusedforbatterychargingshouldnotbeincludedinthecorepowerconsumptionvalues;however,thispowerparametershallbeprovided.Theloopresistanceuptothenetworkterminationpointisdependantonthenationalimplementation,300Ωshouldbeusedforcalculationpurposes.ThepoweringrequirementscalculationforanONUshalltakeintoaccounttheenvironmentalclassdescribedinETS300019[9].AdetaileddescriptionofthepoweringaspectsofONUsandexamplesofpowerconsumptionvaluesareshowninannexB.6ODNThedetailedspecificationoftheODNisconsideredinETS300681[4].6.1GeneralODNrequirementsTheODNisbasedonpoint-to-multipointtreeandbranchoptionsasdescribedinETS300681[4].TheODNincludesnoopticaltoelectricalconversion.ODNopticalelementsmaybeco-locatedwiththeONUand/orOLT.TheODNshallsupportoperationinthesecondandthirdwavelengthregionsasdescribedinETS300681[4].SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)176.2ReachlimitationsandsplitratiosoftheODNInthissubclausealldistancesquotedrefertofibrekilometres.TheOANsystemshallbeabletooperateoveradistanceupto20km.TwoOANsystemtypesaredescribedwhicharebasedonthetransmissionmethodsconsideredinclause8.OANsystemstype2haverestrictedODNrequirementse.g.TimeCompressionMultiplexing(TCM).Atthegivendistancesintable3thesplitratiosshownarerequired.Table3:OANsystemtypesDistanceOANsystemtype1(e.g.SDM,WDM,FDM)OANsystemtype2(e.g.TCM)20kmAsplitratioofatleast16wayshallbesupportedAsplitratioofatleast8wayshallbesupported10kmAsplitratioofatleast32wayshallbesupportedAsplitratioofatleast16wayshallbesupportedSDM:SpaceDivisionMultiplexingWDM:WavelengthDivisionMultiplexingFDM:FrequencyDivisionMultiplexingThepathlossesfortheaboverequirementsarecalculatedinETS300681[4].ThereisanOANsystemrequirementtooperatewithadifferentialfibredistance(∆)betweenthenearestandfurthestONUfromtheOLTasdefinedinfigure4.OLTONU1ONUnx1x2x1:ShortestdistancebetweenOLTandONUofanODN.x2:LongestdistancebetweenOLTandONUofanODN.Figure4:ReachlimitationsofPONsThedifferentialfibredistance(∆)=x2-x1TheOANsystemshallbecapableofoperatingoveranODNsuchthatthedifferentialfibredistance(∆)betweenthenearestandfurthestONUfromtheOLTisanywherebetween0kmandatleast5km.NOTE:IftheOANsystemwillnotprovideservicetoONUswhenthedistancebetweenthenearestandfurthestONUfromtheOLTis4,5kmthenthesystemdoesnotmeetthisrequirement.HoweveriftheOANsystemwillprovideservicetoONUswhenthedistancebetweentheOLTandthenearestandfurthestONUis5,1km,10kmor20km(i.e.greaterthanorequalto5km)thenthesystemmeetstherequirement).7OLTTheOLTprovidesatleastoneopticalinterfacetowardstheODNandprovidesatleastonenetworkinterfaceonthenetwork-sideoftheOAN.TheOLTcanbeco-locatedwithinalocalexchangeorataremotelocation.ItcomprisesthemeansnecessaryfordeliveringdifferentservicestotherequiredONUs.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)187.1DescriptionoffunctionsFigure5showsafunctionaldescriptionoftheOLT.ItisusefulforstandardizationpurposestoconsidertheOLTintermsofthreeparts,thesearedefinedas:a)coreshell;b)serviceshell;c)commonshell.Thefunctionalityoftheseshellsisdescribedinsubclauses7.1.1to7.1.3.ODN***NetworkCoreshellCommonshellServiceshellSPF***ODNinterfacefunctionTransmissionmultiplexfunctionTributaryinterfacefunctionDigitalcrossconnectfunctionOAMfunctionPowersupplyfunctionTributaryinterfacefunctionODNinterfacefunctionTomediationfunctionandthenQ3interfaceSPF:SignallingProcessingFunctionFigure5:OLTfunctionalblocks7.1.1OLTcoreshellTheOLTcoreshellincludes:a)ODNinterface;b)transmissionmultiplexing;c)customerandservicecrossconnectfunctions.TheODNinterfacefunctionprovidesasetofphysicalopticalinterfacefunctionsterminatingtherelevantset(s)ofopticalfibresoftheODN(s),andincludesoptical/electricalandelectrical/opticalconversion.InordertoenableimplementationofprotectionswitchingbetweengeographicallyredundantroutesuptoaflexibilitypointintheODNwhereopticalfibresplittingoccurs,theOANsystemshouldprovidethepossibilityofoptionallyequippingtheOLTwithaduplicateODNinterface.ThisisinadditiontothemaximumnumberofODNsthattheOLTisdesignedfornormaloperation.Detailedcharacteristicsofpossibleprotectionmechanismsarenotconsideredinthepresentdocument.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)19ThetransmissionmultiplexingfunctionprovidesthenecessaryfunctionsfortransmittingorreceivingservicechannelsovertheODN.ThecustomerandservicecrossconnectfunctionprovidesconnectivitybetweentheavailablebandwidthattheODNsideandthenetworkpartsatthenetwork-side.Fullaccessshallbeprovided.7.1.2OLTserviceshellTheOLTserviceshellcanincludeNTinterfaceandsignalprocessingfunctions.ATUisanFRUwithoneormoretributaryinterfacefunctions.Anetworktributaryinterfacefunctionisa2Mbit/sport(describedinsubclause7.3)onaTU;itprovidestheinterfacebetweentheOLTandthemainnetwork.Theyshallbespecifictoasingleservice,configurabletooneofanumberofservices,orcapableofsimultaneouslysupportingtwoormoredifferentservices.AnyTUthatprovidestwoormore2Mbit/sportsshallbeindependentlyconfigurableonaperportbasis.Forthistypeofmulti-portTU,itshallbepossibletoconfigureeachporttoadifferentservice.EachTUpositionintheOLTequipmentshallbecapableofacceptingaTUofanytype.TheOLTshallbeabletosupportanynumberofTUsuptothedesignedmaximumnumberinanycombinationofservices.ThesignalprocessingfunctionsprovidethemeansforhandlingsignallinginformationthroughtheOLT.7.1.3OLTcommonshellTheOLTcommonshellcanincludepowersupplyandOAMfunctions.Thepowersupplyfunctionconvertsanexternalpowersourcetotherequiredlevel.TheOAMfunctionprovidesthemeanstohandletheOAMfunctionalitytoallblocksoftheOLT.ItalsoprovidesaninterfacefunctionbothforlocalcontrolfortestingpurposesandfortheQinterfacefortheAccessNetwork(QAN)interfacetowardstheOperationsSystem(OS)viaamediationfunction.7.2OLTdimensionsTheOLTdimensionsconsideredinthissubclauserefertoissuesrelatingtotheservicecapacity.TheOLTdimensionsaredescribedintable4.TwoOANsystemtypesaredescribedwhicharebasedonthetransmissionmethodsconsideredinclause8.OANsystemstype2haverestrictedODNrequirementse.g.TCM.Table4:OLTdimensionsReferenceOANsystemtype1(e.g.SDM,WDM,FDM)OANsystemtype2(e.g.TCM)Numberoftributaryinterfacefunctionsatleast32atleast32NumberofODNInterfacesatleast4atleast4TotalOLTcross-connectfunctioncapabilityatleast800Batleast800BODNinterfacecapacityatleast200Batleast100BSIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)207.3SNIsTheSNIsusedshouldbeasdescribedintable5.Table5POTS:V5.1(ETS300324[12])/V5.2(ETS300347[13])ISDN-BA:V5.1(ETS300324[12])/V5.2(ETS300347[13])ISDN-PRA:V3(ETS300233[10])ISDN-PRA(subfilled):V5.2(ETS300347[13])Dataservices:2Mbit/saccordingtoG.703[19]andG.704[20]Analogueleasedlines:withinbandsignalling:withoutbandsignalling:2Mbit/saccordingtoG.703[19]andG.704[20]2Mbit/saccordingtoG.703[19]andG.704[20]plusnationalsignallingDigitalleasedlineservices:64kbit/sG.703[19]:64kbit/sI.430[24]:1984kbit/s:2048kbit/sunstructured:2Mbit/saccordingtoG.703[19]andG.704[20]2Mbit/saccordingtoG.703[19]andG.704[20]2Mbit/saccordingtoG.703[19]andG.704[20]2Mbit/saccordingtoG.703[19]andG.704[20]2Mbit/saccordingtoG.703[19]G.703[19]:ITU-TRecommendationG.703[19].G.704[20]:ITU-TRecommendationG.704[20].I.430[24]:ITU-TRecommendationI.430[24].ThereisapossibilitythattheseinterfacescouldbemappedontoSDHtransportmechanismasanalternativemethod.8SpecificattributesofOANsInthisclausethekeyfeaturesofOANstomeettherequirementsofthenetworkoperatorsaredescribed.8.1TransmissionmethodThetransmissionmethodshallallowtheOLT-ONUconnectiontobepoint-to-multipoint.Thetransmissionmethodshallalsoallowpoint-to-pointinterworkingbetweentheOLTandtheONU,however,thisshouldbeconsideredasasubsetofthetransmissionmechanismcapabilities.Specificoptimizedpoint-to-pointsystemsareoutsidethescopeofthepresentdocument.ThemultipleaccessmethodshallbebasedontheTDMAand/orSCMAtransmissionmethod.Thebi-directionaltransmissionschemeshallbebasedononeofthefollowingprocedures:-SDM(2fibres,simplex);-TCM(1fibre,half-duplex);-WDM(1fibre,diplex);-FDM(1fibre,duplex).8.2OperatingwavelengthrangeforanOANTheoperatingwavelengthrangedescribedinthissubclausereferstothesystemwavelengthforprovidingnarrowbandservices.ItispossiblethatwavelengthsoutsidetheseregionsmaybesimultaneouslypresentonthesameODN(e.g.fortestingpurposes),thesecouldbeconsideredasinterferingsignals.TheOANshouldcontinuetooperatenormallyinthepresenceofinterferingsignals.Itisimportanttoconsidertheoperatingwavelengthrangeintwodirections,asthepossibleuseofwavelengthmaybedifferentineachdirection.SIST EN 300 463 V1.1.2:2003

ETSIETSIEN300463V1.1.2(2000-06)218.2.1SDMTheoperatingwavelengthrangeshallbewithinthe1310nmregionasdefinedinETS300681[4].8.2.2TCMTheoperatingwavelengthrangeshallbewithinthe1310nmregionasdefinedinETS300681[4].8.2.3WDMTheoperatingwavelengthrangeshallbewithinthe1310nmregionasdefinedinETS300681[4].Asaninterimsolution,duetoeconomicalandtechnicalissues,theoperatingwavelengthrangefordownstreamdirection(OLTtoONU)couldbewithinthe1550nmregionasdefinedinETS300681[4].8.2.4FDMTheoperatingwavelengthrangeshallbewithinthe1310nmregionasdefinedinETS300681[4].8.3SignaltransferdelayThefiguresbelowdefinethemeansignaltransferdelayastheaverageoftheupstreamandthedownstreamvalues.Themeansignaltransferdelaytimeisthemeasuredroundtripdelaytimedividedbytwo,asshowninfigure6.Allthedefinedvaluesassumea10kmdistanceoftheODN.Thelengthofthemetallicdropshallbeneglected.ONUSUOLTTUAUSplitterUNISNIDelayupstreamDelaydownstreamRoundtripmeansignaltransferdelaydelaydownstreamdelayupstream=+2Figure6:SignaltransferdelaycalculationsSIST EN 300
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