SIST EN 300 288 V1.2.1:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dostop in terminali (AT) - Digitalni zakupljeni vodi za prenosno hitrost 64 kbit/s brez omejitev za prenašane signale in z ohranjanjem oktetov (D64U) - Omrežni vmesnikAccess and Terminals (AT); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); Network interface presentation33.040.50Vodi, zveze in tokokrogiLines, connections and circuitsICS:Ta slovenski standard je istoveten z:EN 300 288 Version 1.2.1SIST EN 300 288 V1.2.1:2004en01-oktober-2004SIST EN 300 288 V1.2.1:2004SLOVENSKI
STANDARD



SIST EN 300 288 V1.2.1:2004



ETSIEN300288V1.2.1(2001-07)EuropeanStandard(Telecommunicationsseries)AccessandTerminals(AT);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);NetworkinterfacepresentationSIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)2ReferenceREN/AT-020004Keywordsdigital,interface,leasedline,ONP,testingETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)3ContentsIntellectualPropertyRights.5Foreword.5Introduction.61Scope.72References.73Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.84Requirements.84.1Physicalcharacteristics.84.1.1Hardwiredconnection.94.1.2Socketspecification.94.1.3Shieldconnectionpoint.94.2Electricalcharacteristics.94.2.1Outputport.94.2.1.1Signalcoding.94.2.1.2Waveformshape.94.2.1.3Outputtiming.114.2.1.4Outputtimingunderfailureconditions.114.2.1.5Outputreturnloss.114.2.1.6Impedancetowardsground.114.2.1.7Longitudinalconversionloss.114.2.1.8Outputsignalbalance.114.2.2Inputport.124.2.2.1Signalcoding.124.2.2.2Inputtimingandjittertolerance.124.2.2.3Inputreturnloss.124.2.2.4Inputlosstolerance.124.2.2.5Immunityagainstreflections.124.2.2.6Impedancetowardsground.134.2.2.7Longitudinalconversionloss.134.3Safety.134.4Overvoltage.134.5Electromagneticcompatibility.13AnnexA(normative):Testmethods.14A.1General.14A.1.1Additionalinformationtosupportthetest.14A.1.2Equipmentconnection.14A.2Testmethods.15A.2.1Signalcodingatoutputport.15A.2.2Waveformshapeatoutputport.15A.2.3Outputtimingunderfailureconditions.16A.2.4Inputcoding,losstoleranceandimmunityagainstreflections.17A.2.5Returnlossatinputport.18A.2.6Longitudinalconversionloss.18A.2.7Impedancetowardsground.19SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)4AnnexB(normative):Codeconversionrules.20AnnexC(informative):Bibliography.21History.22SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeAccessandTerminals(AT).ThepresentdocumentresultedfromamandatefromtheCommissionoftheEuropeanCommunity(CEC)toprovidestandardsforthesupportoftheDirectiveonOpenNetworkProvision(ONP)ofleasedlines(92/44/EEC)(seeannexC).Therearetwootherstandardsdirectlyrelatedtothepresentdocument:-EN300289:"AccessandTerminals(AT);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);Connectioncharacteristics";-EN300290:"AccessandTerminals(AT);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);Terminalequipmentinterface".ThepresentdocumentisbasedoninformationfromITU-TRecommendationsandETSIpublicationsandtherelevantdocumentsarequotedwhereappropriate.NationaltranspositiondatesDateofadoptionofthisEN:29June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)6IntroductionTheCouncilDirectiveontheapplicationofOpenNetworkProvision(ONP)toleasedlines(92/44/EEC)(seeannexC)concernstheharmonizationofconditionsforopenandefficientaccessto,anduseof,theleasedlinesprovidedoverpublictelecommunicationsnetworksandtheavailabilitythroughouttheCommunity(EEC)ofaminimumsetofleasedlineswithharmonizedtechnicalcharacteristics.OthercountriesoutsidetheEECmayalsochoosetoprovideleasedlinesaccordingtothestandardsproducedtosupporttheDirective(ofwhichthepresentdocumentisoneoftheset).TheconsequenceoftheDirectiveisthatTelecommunicationsOrganizationswithintheEECshallmakeavailableasetofleasedlinesbetweenpointsinthesecountrieswithspecifiedconnectioncharacteristicsandspecifiedinterfaces.UndertheDirective91/263/EEC(seeannexC),laterreplacedby98/13/EC(seeannexC),terminalequipmentforconnectiontotheseleasedlineswasrequiredtofulfilcertainessentialrequirements.Thepresentversionofthepresentdocumenthasbeenproducedtointroducesomenecessarychanges.ETS300166(seeannexC)andITU-TRecommendationG.703[1]wereusedasthebasisfortheinterfacepresentationrequirements.SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)71ScopeThepresentdocumentspecifiesthetechnicalrequirementsandtestprinciplesforthenetworkinterfacepresentationsofOpenNetworkProvision(ONP)64kbit/sdigitalunrestrictedleasedlineswithoctetintegrity.Thesepresentationsarecodirectional.AconnectionispresentedviainterfacesatNetworkTerminationPoints(NTP).Thepresentdocumentdefinesthenetworkinterfacepresentedbytheleasedlineproviderandshouldbeusedinconjunctionwiththecompanionstandard,EN300289[3],whichspecifiestheconnectioncharacteristicsbetweentheNTPsoftheleasedline.Together,thesedocumentsdescribetheserviceoffered.Thepresentdocumentisapplicabletoleasedlines,includingparttimeleasedlines,whoseestablishmentorreleasedoesnotrequireanyprotocolexchangeorotherinterventionattheNTP.Thepresentdocumentcoversthephysical,mechanicalandelectricalcharacteristics(exceptsafety,overvoltageandEMCaspects)ofthenetworkinterfaceandspecifiestheconformancetestsforequipmentofthekindthatprovidestheinterfacepresentation.Someofthetestsdescribedinthepresentdocumentarenotdesignedtobeappliedtotheinterfaceofaninstalledleasedline;suchtestsmaybeappliedtoequipmentofthekindusedtoprovidetheinterface.Thepresentdocumentdoesnotincludedetailsconcerningtheimplementationofthetestsnordoesitincludeinformationonanyregulationsconcerningtesting.Thereisnorequirementforeachleasedlinetobetestedinaccordancewiththepresentdocumentbeforeitisbroughtinto,orreturnedinto,service.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ITU-TRecommendationG.703(1998):"Physical/electricalcharacteristicsofhierarchicaldigitalinterfaces".[2]ITU-TRecommendationO.152(1992):"Errorperformancemeasuringequipmentforbitratesof64kbit/sandNx64kbit/s".[3]ETSIEN300289:"AccessandTerminals(AT);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);Connectioncharacteristics".[4]ETSIEN300290:"AccessandTerminals(AT);64kbit/sdigitalunrestrictedleasedlinewithoctetintegrity(D64U);Terminalequipmentinterface".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:leasedlines:telecommunicationsfacilitiesprovidedbyapublictelecommunicationsnetworkthatprovidedefinedtransmissioncharacteristicsbetweennetworkterminationpointsandthatdonotincludeswitchingfunctionsthattheusercancontrol(e.g.on-demandswitching)SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)8NetworkTerminationPoint(NTP):allphysicalconnectionsandtheirtechnicalaccessspecificationswhichformpartofthepublictelecommunicationsnetworkandarenecessaryforaccesstoandefficientcommunicationthroughthatpublicnetworkTerminalEquipment(TE):equipmentintendedtobeconnectedtothepublictelecommunicationsnetwork,i.e.:a)tobeconnecteddirectlytotheterminationofapublictelecommunicationnetwork;orb)tointerworkwithapublictelecommunicationsnetworkbeingconnecteddirectlyorindirectlytotheterminationofapublictelecommunicationsnetwork,inordertosend,process,orreceiveinformation.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:D64U64kbit/sdigitalunrestrictedONPleasedlinewithoctetintegritydcdirectcurrentEMCElectro-MagneticCompatibilityNTPNetworkTerminationPointONPOpenNetworkProvisionppmpartspermillionPRBS(211-1)PseudoRandomBitSequence(asdefinedinclause2.1ofITU-TRecommendationO.152[2])rmsrootmeansquareRXReceive(asignalinputateithertheleasedlineinterfaceorthetestequipment,seefigure1)TETerminalEquipmentTXTransmit(asignaloutputateithertheleasedlineinterfaceorthetestequipment,seefigure1)4RequirementsThe64kbit/sunrestrictedleasedlineprovidesabidirectional,point-to-pointdigitalleasedlinewithausablebitrateof64kbit/sandoctetintegrity,wheretheoutputtimingisprovidedfromthenetwork.Theinterfacetimingarrangementsarecodirectional.NOTE:Ifequipmentprovidingtheinterfacerequiresamainssupply,theleasedlineprovidershouldbringthistotheattentionoftheusersothattheusercanprovidemainssupplyback-upfacilities,ifrequired.4.1PhysicalcharacteristicsTheconnectionarrangementsprovidedbytheleasedlineinterfaceshallbesuitableforhardwiredconnection(seeclause4.1.1).However,withtheagreementoftheuser,analternativemeansofconnection,usingasocket,maybeprovided(seeclause4.1.2).Thetransmitpairistheoutputfromthenetworkinterface.Thereceivepairistheinputtothenetworkinterface,asshowninfigure1.Wheretheterms"output"and"input"areusedwithoutqualificationinthepresentdocument,theyrefertothenetworkinterface.INPUTINPUTOUTPUTOUTPUTTXNETWORKINTERFACERXTXTERMINALEQUIPMENTRXFigure1TheuseontheterminalequipmentsideoftheinterfaceofshieldedcablesmaybenecessarytomeetradiationandimmunityrequirementsdefinedinElectro-MagneticCompatibility(EMC)standards.ThereforetheNTPisrequiredtoprovideapointforconnectionoftheshield(seeclause4.1.3).SIST EN 300 288 V1.2.1:2004



ETSIETSIEN300288V1.2.1(2001-07)94.1.1HardwiredconnectionRequirement:Wheretheleasedlineisbeingpresentedasahardwiredconnection,theleasedlineinterfaceshallprovideameansofterminatingwirewithsolidconductorshavingdiametersintherange0,4mmto0,6mm.Theleasedlineprovidershallp
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