SIST EN 300 418 V1.2.1:2004
(Main)Access and Terminals (AT); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation
General Information
- Abstract
Revision to improve the safety related text following a liaison from TC Safety. Specification of the public network side of the interface and test procedures for compliance
- Status
- Published
- Publication Date
- 30-Sep-2004
- Technical Committee
- SPN - Services and Protocols for Networks
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Oct-2004
- Due Date
- 01-Oct-2004
- Completion Date
- 01-Oct-2004
- Mandate
- T-147-2
Overview
SIST EN 300 418 V1.2.1:2004 is a European telecommunications standard developed by the Slovenski inštitut za standardizacijo (SIST) and aligned with ETSI EN 300 418. This standard specifies the technical requirements and test methods for the network interface presentation of 2 048 kbit/s (E1) digital leased lines, covering both unstructured (D2048U) and structured (D2048S) services. The focus is on the interface from the public network side at the Network Termination Point (NTP), which is essential for seamless and reliable interconnection between service providers and user equipment in European digital networks.
This revision addresses improvements to safety-related text following feedback from TC Safety, reinforcing the importance of conformity and risk reduction in leased line interface deployments.
Key Topics
- Network Interface Presentation: Defines the physical, mechanical, and electrical characteristics of the network’s 2 048 kbit/s interface, supporting both unstructured and structured digital transmission.
- Leased Line Types: Covers D2048U (unstructured, user-timed, transparent) and D2048S (structured, with frame format and 1984 kbit/s data portion), outlining network-provider obligations.
- Test Procedures: Specifies conformance testing principles and identifies key test methods for interface compliance but does not mandate testing of each installed line.
- Physical and Electrical Requirements:
- Hardwired connection specifications for terminated wires
- Optional configuration for socket usage
- Shield connection points for EMC compliance
- Signal Coding and Performance: Establishes requirements for HDB3 encoding, pulse shape, input/output return loss, and immunity to reflection and longitudinal voltages according to ITU-T G.703.
- Safety and EMC Considerations: Clarifies that specific safety, overvoltage, and EMC requirements are referenced in other standards and are outside the core scope of this document.
- Scope of Applicability: The standard is suitable for both full and part-time leased line scenarios, provided no protocol negotiation is necessary at the NTP.
Applications
SIST EN 300 418 V1.2.1:2004 provides essential guidance for:
- Telecommunications Network Operators: Ensuring standardized connection points for E1 digital leased line services across Europe, enabling interoperability and consistent performance.
- Terminal Equipment Manufacturers: Designing devices for direct connection to public E1 interfaces, aligning with technical signaling, and physical connection requirements.
- Conformance Testing Laboratories: Applying standardized procedures for verifying the compliance of leased line interface equipment, safeguarding network integrity.
- Project Engineers and Installers: Understanding connection details, including cabling, connector, and shielding arrangements, to facilitate error-free installation and long-term service reliability.
- Regulatory Compliance: Supporting harmonization under European directives for open network provision and mutual recognition of conformity.
By following this standard, organizations benefit from reduced risk of incompatibility, improved service continuity, and streamlined market access for telecommunication equipment.
Related Standards
SIST EN 300 418 V1.2.1:2004 references or should be used in conjunction with:
- EN 300 247: Connection characteristics for D2048U digital unstructured leased line
- EN 300 248: Terminal equipment interface for D2048U
- EN 300 419: Connection characteristics for D2048S digital structured leased line
- EN 300 420: Terminal equipment interface for D2048S
- ITU-T Recommendation G.703: Physical/electrical characteristics of hierarchical digital interfaces
- EN 60950 (CENELEC): Safety of information technology equipment
- Other European Directives: Relating to electromagnetic compatibility and open network provision
For accurate, consistent, and interoperable E1 digital leased line interfaces, adherence to SIST EN 300 418 and its related standards is critical for any organization operating within the European telecommunications sector.
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Frequently Asked Questions
SIST EN 300 418 V1.2.1:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Access and Terminals (AT); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation". This standard covers: Revision to improve the safety related text following a liaison from TC Safety. Specification of the public network side of the interface and test procedures for compliance
Revision to improve the safety related text following a liaison from TC Safety. Specification of the public network side of the interface and test procedures for compliance
SIST EN 300 418 V1.2.1:2004 is classified under the following ICS (International Classification for Standards) categories: 33.040.50 - Lines, connections and circuits. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 418 V1.2.1:2004 is associated with the following European legislation: Standardization Mandates: T-147-2. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 300 418 V1.2.1:2004 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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
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.:+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 300 418 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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