ETSI EN 300 418 V1.2.1 (2001-07)

Access and Terminals (AT); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation

REN/AT-020006

Dostop in terminali (AT) - Digitalni zakupljeni vodi za prenosno hitrost 2 048 kbit/s in za nestrukturirane in strukturirane signale (D2048U in D2048S) - Omrežni vmesnik

General Information

• Status: Published
• Publication Date: 03-Jul-2001
• Technical Committee: AT Digital - AT Digital
• Current Stage: 12 - Completion
• Due Date: 06-Jul-2001
• Completion Date: 04-Jul-2001
• Mandate: T-147-2
• Ref Project: SIST EN 300 418 V1.2.1:2004 - Access and Terminals (AT); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dostop in terminali (AT) - Digitalni zakupljeni vodi za prenosno hitrost 2 048 kbit/s in za nestrukturirane in strukturirane signale (D2048U in D2048S) - Omrežni vmesnikAccess and Terminals (AT); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation33.040.50Vodi, zveze in tokokrogiLines, connections and circuitsICS:Ta slovenski standard je istoveten z:EN 300 418 Version 1.2.1SIST EN 300 418 V1.2.1:2004en01-oktober-2004SIST EN 300 418 V1.2.1:2004SLOVENSKI
STANDARD



SIST EN 300 418 V1.2.1:2004



ETSIEN300418V1.2.1(2001-07)EuropeanStandard(Telecommunicationsseries)AccessandTerminals(AT);2048kbit/sdigitalunstructuredandstructuredleasedlines(D2048UandD2048S);NetworkinterfacepresentationSIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)2ReferenceREN/AT-020006Keywordsdigital,interface,leasedline,network,ONP,terminal,testing,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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)3ContentsIntellectualPropertyRights.5Foreword.5Introduction.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.84Requirements.84.1Physicalcharacteristics.94.1.1Hardwiredconnection.94.1.2Socketspecification.94.1.3Shieldconnectionpoint.94.2Electricalcharacteristics.104.2.1Outputport.104.2.1.1Signalcoding.104.2.1.2Waveformshape.104.2.1.3Outputtimingunderfailureconditions.114.2.1.4Impedancetowardsground.124.2.1.5Outputreturnloss.124.2.1.6Outputsignalbalance.124.2.1.7Outputtimingandjitter.124.2.2Inputport.124.2.2.1Signalcoding.124.2.2.2Inputreturnloss.124.2.2.3Inputlosstolerance.134.2.2.4Immunityagainstreflections.134.2.2.5Tolerablelongitudinalvoltages.134.2.2.6Impedancetowardsground.134.2.2.7Inputtimingandjittertolerance.134.3Safety.144.4Overvoltage.144.5ElectroMagneticCompatibility(EMC).14AnnexA(normative):Testmethods.15A.1General.15A.1.1Additionalinformationtosupportthetest.15A.1.2Equipmentconnection.15A.2Testmethods.16A.2.1Signalcodingatoutputport.16A.2.2Waveformshapeatoutputport.17A.2.3Returnlossatinputport.18A.2.4Inputlosstoleranceandimmunityagainstreflections.18A.2.5TolerablelongitudinalvoltageandHDB3inputcoding.20A.2.6Impedancetowardsground.21A.2.7Outputtimingunderfailureconditions.21AnnexB(normative):DefinitionofHDB3code.23B.1General.23B.2Definition.23SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)4AnnexC(informative):Bibliography.24History.25SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(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).Inthecaseoftheunstructuredleasedline,thepresentdocumentsupersedesETS300246(withdrawn)(seeannexC).Therearefourotherstandardsdirectlyrelatedtothepresentdocument:-EN300247:"AccessandTerminals(AT);2048kbit/sdigitalunstructuredleaseline(D2048U);Connectioncharacteristics";-EN300248:"AccessandTerminals(AT);2048kbit/sdigitalunstructuredleasedline(D2048U);Terminalequipmentinterface";-EN300419:"AccessandTerminals(AT);2048kbit/sdigitalstructuredleasedlines(D2048S);Connectioncharacteristics";-EN300420:"AccessandTerminals(AT);2048kbit/sdigitalstructuredleasedlines(D2048S);Terminalequipmentinterface".ThepresentdocumentisbasedoninformationfromITU-TRecommendationsandETSIpublicationsandtherelevantdocumentsarequotedwhereappropriate.NationaltranspositiondatesDateofadoptionofthisEN:29June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)6IntroductionTheCouncilDirectiveontheapplicationofONPtoleasedlines(92/44/EEC)(seeannexC)concernstheharmonizationofconditionsforopenandefficientaccessto,anduseof,theleasedlinesprovidedoverpublictelecommunicationsnetworks,andtheavailabilitythroughouttheEuropeanUnion(EU)ofaminimumsetofleasedlineswithharmonizedtechnicalcharacteristics.TheconsequenceoftheDirectiveisthattelecommunicationsorganizationswithintheEUshallmakeavailableasetofleasedlinesbetweenpointsinthesecountrieswithspecifiedconnectioncharacteristicsandspecifiedinterfaces.UndertheDirective91/263/EEC(seeannexC),laterreplacedby98/13/EC(seeannexC),terminalequipmentforconnectiontotheseleasedlineswasrequiredtofulfilcertainessentialrequirements.Thepresentversionofthepresentdocumenthasbeenproducedtointroducesomenecessarychanges.ETS300166(seeannexC)andITU-TRecommendationG.703[1]wereusedasthebasisforthenetworkinterfacepresentationrequirements.SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)71ScopeThepresentdocumentspecifiesthetechnicalrequirementsandtestprinciplesforthenetworkinterfacepresentationsofONP2048kbit/sdigitalleasedlinesusing120Ωinterfaces.Thisincludes:-the2048kbit/sdigitalunstructuredleasedline;and-the2048kbit/sdigitalstructuredleasedlinewithaninformationtransferrateof1984kbit/swithoutrestrictiononbinarycontent.AconnectionispresentedviainterfacesatNetworkTerminationPoints(NTP).Thepresentdocumentdefinesthenetworkinterfaceaspresentedbytheleasedlineproviderandshouldbeusedinconjunctionwiththeappropriatecompanionstandard,EN300247[3]orEN300419[5],specifyingtheconnectioncharacteristicsbetweentheNTPsoftheleasedline.Thepresentdocumentandtheappropriateconnectioncharacteristicsstandardtogetherdescribethetechnicalcharacteristicsoftheleasedline.Thepresentdocumentisapplicabletoleasedlines,includingparttimeleasedlines,forwhichtheestablishmentorreleasedonotrequireanyprotocolexchangeorotherinterventionattheNTP.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.151(1992):"Errorperformancemeasuringequipmentoperatingattheprimaryrateandabove".[3]ETSIEN300247:"AccessandTerminals(AT);2048kbit/sdigitalunstructuredleaseline(D2048U);Connectioncharacteristics".[4]ETSIEN300248:"AccessandTerminals(AT);2048kbit/sdigitalunstructuredleasedline(D2048U)Terminalequipmentinterface".[5]ETSIEN300419:"AccessandTerminals(AT);2048kbit/sdigitalstructuredleasedlines(D2048S);Connectioncharacteristics".[6]ETSIEN300420:"AccessandTerminals(AT);2048kbit/sdigitalstructuredleasedlines(D2048S);Terminalequipmentinterface".SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)83Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:leasedlines:telecommunicationsfacilitiesprovidedbyapublictelecommunicationsnetworkthatprovidedefinedtransmissioncharacteristicsbetweenNTPsandthatdonotincludeswitchingfunctionsthattheusercancontrol,(e.g.on-demandswitching)NetworkTerminationPoint(NTP):allphysicalconnectionsandtheirtechnicalaccessspecificationswhichformpartofthepublictelecommunicationsnetworkandarenecessaryforaccesstoandefficientcommunicationthroughthatpublicnetworkPRBS(215-1):PseudoRandomBitSequence(PRBS)(asdefinedinclause2.1ofITU-TRecommendationO.151[2])terminalequipment:equipmentintendedtobeconnectedtothepublictelecommunicationsnetwork,i.e.:-tobeconnecteddirectlytotheterminationofapublictelecommunicationnetwork;or-tointerworkwithapublictelecommunicationsnetworkbeingconnecteddirectlyorindirectlytotheterminationofapublictelecommunicationsnetwork,inordertosend,process,orreceiveinformation3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:AISAlarmIndicationSignalAMIAlternateMarkInversionCRC-4CyclicRedundancyCheck-4bitD2048S2048kbit/sdigitalstructuredleasedlineD2048U2048kbit/sdigitalunstructuredleasedlinedcdirectcurrentEMCElectroMagneticCompatibilityHDB3HighDensityBipolarcodeoforder3(seeannexB)ISDNIntegratedServicesDigitalNetworkNTPNetworkTerminationPointONPOpenNetworkProvisionppmpartspermillionPRBSPseudoRandomBitSequencermsrootmeansquareRXRXisasignalinput(ateithertheleasedlineinterfaceorthetestequipment,seefigure1)TXTXisasignaloutput(ateithertheleasedlineinterfaceorthetestequipment,seefigure1)4RequirementsTheserequirementsdefinethenetworkinterfacepresentationfor:-the2048kbit/sdigitalunstructuredleasedline(D2048U)whichprovidesabidirectionalpoint-to-pointdigitalconnectionwithausablebitrateof2048kbit/swheretimingisnotprovidedfromthenetwork.Theprovisionofcircuittimingistheresponsibilityoftheuser.Nostructuringofthedataisprovided,orshallberequired,bythenetworkandanystructuringistheresponsibilityoftheuser;and-the2048kbit/sdigitalstructuredleasedline(D2048S)whichprovidesabidirectionalpoint-to-pointdigitalconnectionwithaninformationtransferrateof1984kbit/swithoutrestrictiononbinarycontent.Theframestructureinthe2048kbit/sbitstreamisdefinedinEN300419[5].Anystructuringofthedatawithinthetransparent1984kbit/spartoftheframeistheresponsibilityoftheuser.SIST EN 300 418 V1.2.1:2004



ETSIETSIEN300418V1.2.1(2001-07)9NOTE1:Thenetworkinterfaceisnotdesignedforpowerfeeding.NOTE2: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.NetworkInterfaceTXRXRXTXTerminalEquipmentOutputInputOutputInputFigure1TheuseontheterminalequipmentsideoftheinterfaceofshieldedcablesmaybenecessarytomeetradiationandimmunityrequirementsdefinedinElectroMagneticCompatibility(EMC)standards.ThereforetheNTPisrequiredtoprovideapointforconnectionoftheshield(seeclause4.1.3).4.1.1HardwiredconnectionRequirement:Wheretheleasedlineisbeingpresentedasahardwiredconnection,theleasedlineinterfaceshallprovideameansofterminatingwirewithsolidconductorshavingdiametersintherange0,4mmto0,6mm.Theleasedlineprovidershallprovideinformationontheconfigurationofthemeansofconnection.Test:Thereisnotest.Allsubsequenttestsarecarriedoutviathespecifiedconnectionmethod.4.1.2SocketspecificationThereisnoconstraintonthetypeofsocketthatmaybeusedunderthepresentdocument.NOTE:TheintentionistospecifythesamesocketasisspecifiedforIntegratedServicesDigitalNetwork(ISDN)primaryrateaccess;howeverthisapproachisnotpracticableatpresentsinc
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