SIST EN 300 453 V1.2.1:2004
(Main)Access and Terminals (AT); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Terminal equipment interface
General Information
- Abstract
Specification of the terminal equipment side of the interface and test procedures for compliance. Revision of ETS 300 453 to improve the safety related text following a liaison received from TC Safety.
- 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 300 453 V1.2.1:2004 is a European telecommunications standard focused on the terminal equipment interface for 4-wire analogue leased lines. Published by the Slovenski inštitut za standardizacijo (SIST) in alignment with ETSI directives, the standard covers both ordinary (A4O) and special (A4S) quality voice bandwidth leased lines. It defines the physical and electrical characteristics of the terminal side interface, along with standardized test procedures for compliance. The standard supports open network provision (ONP) requirements for communication interoperability across European networks and has been revised to enhance clarity around safety aspects.
Key Topics
- Terminal Equipment Interface: Specifies requirements for any equipment intended to connect to public telecommunication networks via 4-wire analogue leased lines.
- Physical Characteristics: Details acceptable connection methods, such as 8-contact plugs per ISO/IEC 8877, insulation displacement connectors, screw terminal blocks, and wiring arrangements for specified wire diameters.
- Electrical Characteristics: Addresses return loss, longitudinal conversion loss, transmission signal categories, sending loudness rating, maximum power levels, and requirements for power feeding.
- Transmission Signal Categories: Defines equipment types by signal origin-acoustic interface, internally generated signals, or through electrical interfaces.
- Testing Procedures: Provides principles for compliance testing, including reference impedance requirements, signal measurement methods, and criteria for different test scenarios.
- Scope and Limitations: Excludes detailed safety, overvoltage, and electromagnetic compatibility (EMC) aspects, referencing other standards for these requirements.
Applications
This standard is crucial for:
- Telecom Equipment Manufacturers: Ensures that new terminal devices can interoperate with public 4-wire leased line networks in line with European ONP requirements.
- Network Operators: Assists in certifying that customer-premises equipment (CPE) will meet the necessary interface specifications, supporting reliable voice bandwidth communications.
- System Integrators: Supports integration of voice-grade leased line equipment into existing infrastructure with assured interface compatibility.
- Testing Labs: Provides a clear basis for conducting conformity assessments and pre-market compliance testing for analog terminal devices.
Embracing the requirements of SIST EN 300 453 helps organizations reduce technical interoperability issues, avoid costly field failures, and achieve regulatory compliance within the European market.
Related Standards
For comprehensive compliance or extended requirements, the following related standards should also be consulted:
- EN 300 451: Ordinary quality voice bandwidth 4-wire analogue leased lines - Network interface specification.
- EN 300 452: Special quality voice bandwidth 4-wire analogue leased lines - Network interface specification.
- EN 60950: CENELEC safety standard for information technology equipment.
- ETS EG 201 212: Guidelines on electrical safety classification for telecommunications interfaces.
- ISO/IEC 8877: Interface connectors for ISDN Basic Access.
- ITU-T Recommendations M.1020 & M.1040: Characteristics of leased circuits used as technical references.
By aligning terminal equipment design and testing with SIST EN 300 453 and related standards, organizations ensure robust, interoperable, and future-proof telecommunication solutions for analogue leased line environments.
Keywords: terminal equipment interface, 4-wire analogue leased lines, voice bandwidth, A4O, A4S, telecommunications standard, ONP compliance, electrical characteristics, physical characteristics, SIST, ETSI.
Get Certified
Connect with accredited certification bodies for this standard
ANCE
Mexican certification and testing association.
Intertek Slovenia
Intertek testing, inspection, and certification services in Slovenia.
LNE (Laboratoire National de Métrologie et d'Essais)
French national laboratory for metrology and testing.
Sponsored listings
Frequently Asked Questions
SIST EN 300 453 V1.2.1:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Access and Terminals (AT); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Terminal equipment interface". This standard covers: Specification of the terminal equipment side of the interface and test procedures for compliance. Revision of ETS 300 453 to improve the safety related text following a liaison received from TC Safety.
Specification of the terminal equipment side of the interface and test procedures for compliance. Revision of ETS 300 453 to improve the safety related text following a liaison received from TC Safety.
SIST EN 300 453 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 300 453 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 300 453 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.HUPLQDOVNHRSUHPHAccess and Terminals (AT); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Terminal equipment interface33.040.50Vodi, zveze in tokokrogiLines, connections and circuitsICS:Ta slovenski standard je istoveten z:EN 300 453 Version 1.2.1SIST EN 300 453 V1.2.1:2004en01-oktober-2004SIST EN 300 453 V1.2.1:2004SLOVENSKI
STANDARD
ETSIEN300453V1.2.1(2001-07)EuropeanStandard(Telecommunicationsseries)AccessandTerminals(AT);OrdinaryandSpecialqualityvoicebandwidth4-wireanalogueleasedlines(A4OandA4S);TerminalequipmentinterfaceSIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)2ReferenceREN/AT-010006KeywordsONP,leasedlineETSI650RoutedesLuciolesF-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 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)3ContentsIntellectualPropertyRights.4Foreword.4Introduction.51Scope.62References.63Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.74Requirements.74.1Physicalcharacteristics.74.2Electricalcharacteristics.84.2.1Returnloss.84.2.2Longitudinalconversionloss.84.2.3Transmissionsignals.94.2.3.1Equipmentwithanacousticinput.104.2.3.1.1SendingLoudnessRating(SLR).104.2.3.2Equipmentwithinternallygeneratedelectricalsignals.104.2.3.2.1Maximummeanpower.104.2.3.2.2Maximuminstantaneouspower(peakvoltage).104.2.3.2.3Maximumpowerina10Hzbandwidth.104.2.3.3Equipmentwithanelectricalinput.114.2.4Maximumsendingpowerabove4,3kHz.114.2.5Powerfeeding.124.3Safety.124.4Overvoltage.124.5ElectroMagneticCompatibility(EMC).13AnnexA(normative):Testmethods.14A.1General.14A.1.1Equipmentconnection.14A.1.2Referenceimpedance.14A.1.3Non-reactivetermination.14A.2Testmethods.15A.2.1Returnloss.15A.2.2Longitudinalconversionloss.16A.2.3SendingLoudnessRating(SLR).17A.2.4Maximummeanpower.18A.2.5Maximuminstantaneouspower(peakvoltage).19A.2.6Maximumpowerina10Hzbandwidth.20A.2.7Maximumsendingpowerabove4,3kHz.21A.2.8Powerfeeding.22AnnexB(informative):Bibliography.23History.24SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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).Therearetwootherstandardsdirectlyrelatedtothepresentdocument:-EN300451:"AccessandTerminals(AT);Ordinaryqualityvoicebandwidth4-wireanalogueleasedline(A4O);Connectioncharacteristicsandnetworkinterfacepresentation".-EN300452:"AccessandTerminals(AT);Specialqualityvoicebandwidth4-wireanalogueleasedline(A4S);Connectioncharacteristicsandnetworkinterfacepresentation".ThepresentdocumentisbasedoninformationfromITU-TRecommendationsandETSIpublicationsandtherelevantdocumentsarequotedwhereappropriate.NationaltranspositiondatesDateofadoptionofthisEN:29June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)5IntroductionTheCouncilDirectiveontheapplicationofONPtoleasedlines(92/44/EEC),concernstheharmonizationofconditionsforopenandefficientaccessto,anduseof,theleasedlinesprovidedoverpublictelecommunicationsnetworksandtheavailabilitythroughouttheEuropeanUnion(EU)ofaminimumsetofleasedlineswithharmonizedtechnicalcharacteristics.TheconsequenceoftheDirectiveisthattelecommunicationsorganizationswithintheEUshallmakeavailableasetofleasedlineswithinandbetweenpointsinthesecountrieswithspecifiedconnectioncharacteristicsandspecifiedinterfaces.Twocategories(voluntaryandregulatory)ofstandardwereusedfortheinterfacesofterminalequipmentdesignedforconnectiontotheONPleasedlines.TechnicalBasisforRegulations(TBRs)gavetheearlieressentialrequirementsundertheDirective91/263/EEC,laterreplacedby98/13/EC,forattachmenttotheleasedlines,whereasothervoluntarystandards(ETSsorENs)gavethefulltechnicalspecificationsfortheseinterfaces.Thepresentdocument,whichisbasedonanearlierETS,belongstothesecondcategory.TherequirementsofTBR17areasubsetofthepresentdocument.Thepresentversionofthepresentdocumenthasbeenproducedtointroducesomenecessarychanges.ITU-TRecommendationsM.1020andM.1040wereusedasthebasisfortheleasedlinestandardstowhichthisterminalequipmentinterfacerelates.SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)61ScopeThepresentdocumentspecifiesthephysicalandelectricalcharacteristics(exceptsafety,overvoltageandEMCaspects)andcorrespondingtestprinciplesforaterminalequipmentinterfaceforconnectiontothenetworkterminationpointsofOpenNetworkProvision(ONP)ordinaryqualityorspecialqualityvoicebandwidth4-wireanalogueleasedlinesdefinedbyEN300451andEN300452.ThepresentdocumentiswrittenonlytoensurethattheinterfaceoftheterminalequipmentiscompatiblewiththeONPordinaryqualityorspecialqualityvoicebandwidth4-wireanalogueleasedline.Itisapplicabletoallinterfacesdesignedforconnectiontotheseleasedlines,howeverinthecasesofapparatusthatcarriesaparticularservice,ofcomplexapparatusandofapparatusinprivatenetworks,otherrequirementsmayapplyinadditiontothepresentdocument.CustomerpremiseswiringandinstallationbetweentheterminalequipmentandtheNetworkTerminationPoint(NTP)areoutsidethescopeofthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ISO/IEC8877(1992):"Informationtechnology.Telecommunicationsandinformationexchangebetweensystems.InterfaceconnectorandcontactassignmentsforISDNBasicAccessInterfacelocatedatreferencepointsSandT".[2]ITU-TRecommendationP.56(1993):"Objectivemeasurementofactivespeechlevel".[3]ITU-TRecommendationP.64(1999):"Determinationofsensitivity/frequencycharacteristicsoflocaltelephonesystems".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:leasedlines:telecommunicationsfacilitiesprovidedbyapublictelecommunicationnetworkthatprovidedefinedtransmissioncharacteristicsbetweennetworkterminationpointsandthatdonotincludeswitchingfunctionsthattheusercancontrol,(e.g.on-demandswitching)NetworkTerminationPoint(NTP):allphysicalconnectionsandtheirtechnicalaccessspecificationswhichformpartofthepublictelecommunicationnetworkandarenecessaryforaccesstoandefficientcommunicationthroughthatpublicnetworkreferenceimpedanceZR:thisis600Ω.SeealsoclauseA.1.2SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)7terminalequipment:equipmentintendedtobeconnectedtothepublictelecommunicationnetwork,i.e.:-tobeconnecteddirectlytotheterminationofapublictelecommunicationnetwork;or-tointerworkwithapublictelecommunicationnetworkbeingconnecteddirectlyorindirectlytotheterminationofapublictelecommunicationnetwork,inordertosend,process,orreceiveinformationvoicebandwidth:bandoffrequenciesovertherange300Hzto3400Hz3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:aReturnlossDTMFDualToneMulti-FrequencyEMCElectroMagneticCompatibilityNTPNetworkTerminationPointONPOpenNetworkProvisionpmSoundpressureatthemouthreferencepoint(usedinthecalculationofSLR)rmsrootmeansquareRXRXisasignalinput(ateithertheterminalequipmentorthetestequipment,seefigure1)SLRSendingLoudnessRatingSmJSendingsensitivity(usedinthecalculationofSLR)SmJnSendingsensitivityatfrequencyfn(usedinthecalculationofSLR)TXTXisasignaloutput(ateithertheterminalequipmentorthetestequipment,seefigure1)WsnSendingweightingfactor(usedinthecalculationofSLR)ZRReferenceimpedanceZTTerminatingimpedance4Requirements4.1PhysicalcharacteristicsRequirement:Theterminalequipmentshallprovideoneormoreofthefollowingconnectionmethods:a)an8-contactplugofthetypespecifiedinISO/IEC8877[1]withcontactassignmentsasspecifiedintable1;b)asetofconnectioncontacts(e.g.aninsulationdisplacementconnectororscrewterminalblock)towhichsolidconductorswithdiametersintherange0,4mmto0,6mmmaybeconnected;c)awiringarrangementconnectedbyanymeanstotheterminalequipment,withunterminatedsolidwireconductorswithdiametersintherange0,4mmto0,6mmatthedistantendfromtheterminalequipment.Wherea)andc)areprovided,thesemaybedetachablebytheusersuchthatonlyoneisconnectedtotheterminalequipmentatanytime.NOTE:Thenormalpresentationoftheleasedlineisbymeansofasocket.SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)8Table1:ContactassignmentContactnumberTerminalequipment1Unused2Unused3&6Transmitpair(Outputport)4&5Receivepair(Inputport)7Unused8UnusedNOTE:Thetransmitpairistheoutputfromtheterminalequipment.Thereceivepairistheinputtotheterminalequipmentasshowninfigure1.Wheretheterms"output"and"input"areusedwithoutqualificationinthepresentdocument,theyrefertotheterminalequipmentinterface.TXRXRXTXTERMINALEQUIPMENTINTERFACENETWORKINTERFACEOUTPUTINPUTINPUTOUTPUTFigure1:LeasedlineconfigurationconventionsTest:Thereshallbeavisualinspectionthatoneormoreoftheconnectionmethodsareprovided.ThecontactassignmentsandconnectionmethodsaretestedindirectlythroughthetestsinannexA.4.2ElectricalcharacteristicsTherequirementsofclause4.2applyonlyintheintendedoperatingstateoftheterminalequipment.4.2.1ReturnlossRequirement:Thereturnlossoftheimpedanceoftheinputandoutputportsoftheterminalequipmentinterfacewithrespecttothereferenceimpedance,inthefrequencyrange200Hzto4000Hz,shallbegreaterthanorequalto8dBthroughouttherangewhentestedusingastimulussignalatavoltageequivalenttothatofasignalpowerof-13dBmat1020Hz.Test:ThetestshallbeconductedaccordingtoclauseA.2.1.4.2.2LongitudinalconversionlossRequirement:Thelongitudinalconversionlossoftheinputandoutputportsoftheterminalequipmentinterfaceshallbegreaterthanorequaltothevaluesgivenintable2andfigure2.NOTE:Thelongitudinalconversionlossspecifiestheunwantedtransversesignaldetectedbytheterminalequipmentwhenalongitudinalsignalisappliedequallytotheterminalsoftheinterface.Certainnetworksmayhavehighlongitudinalsignallevels(e.g.65Vrootmeansquare(rms));inthiscase,ahigherlongitudinalconversionlossmaybenecessarytoensureadequateoperationoftheterminalequipment.SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)9Table2:Longitudinalconversionloss,minimumvaluesFrequencyrangeMinimumvalue300Hzto600Hz40dB600Hzto3400Hz46dB60010003400FrequencyHz1020304050300LongitudinalconversionlossdB4640020005000500Figure2:Longitudinalconversionloss,minimumvaluesTest:ThetestshallbeconductedaccordingtoclauseA.2.2.4.2.3TransmissionsignalsThesourceandnatureoftheoutputsignalfromtheterminalequipmentinterfacecanbeclassifiedinseveraldifferentwaysthusdividingtheterminalequipmentsintoseveralnon-exclusivecategories.Onetypeofterminalequipmentmaythereforeneedtobetreatedasamemberofmorethanoneofthecategories.Forthepurposesofthepresentdocumentthegeneralcategoriesrequiringidentificationaredefinedasfollows:a)anyterminalequipmentwheretheoutputsignalisderivedinrealtimefromanintegralacousticinterface.Seeclause4.2.3.1;b)anyterminalequipmentwheretheoutputsignalisgeneratedelectricallywithintheterminalequipment.Seeclause4.2.3.2;c)anythroughconnectingterminalequipmentwheretheoutputsignalisderivedfromanotherelectricalinterface.Seeclause4.2.3.3.NOTE:Terminalequipmentsmaybelongtomorethanonecategory.Atelephonemaybeinbothcategorya)fortelephonyandcategoryb)forthegenerationofDualToneMulti-Frequency(DTMF)tones.Afunctionforgeneratingsyntheticorrecordedspeechormusic,suchasisfoundinansweringmachinesorvoicemail,isincludedincategoryb).SIST EN 300 453 V1.2.1:2004
ETSIETSIEN300453V1.2.1(2001-07)104.2.3.1Equipmentwithanacousticinput4.2.3.1.1SendingLoudnessRating(SLR)Requirement:TheminimumSLRoftheterminalequipment,whenterminatedwiththereferenceimpedanceZR,shallbegreaterthanorequalto-1dB.NOTE:TheminimumSLRvalueof-1dBreferstotheactualmeasuredvalueratherthanthenominalvalue,i.e.thereisnotoleranceonthespecifiedvalue,andhasbeenspecifiedtoensurenoharmtothenetwork.Itisrecommendedthatfornormaloperation,theSLRshouldbegreaterthanorequalto+2dB.Test:ThetestshallbeconductedaccordingtoclauseA.2.3.4.2.3.2Equipmentwithinternallygeneratedelectricalsignals4.2.3.2.1MaximummeanpowerRequirement:Themeanpowerlevelinthefrequencyrange200Hzto3800Hzinanyoneminuteperiodshallbenotgreaterthan-13dBmwhentheterminalequipmentinterfaceisterminatedwiththereferenceimpedanceZR.Test:ThetestshallbeconductedaccordingtoclauseA.2.4.4.2.3.2.2Maximuminstantaneouspower(peakvoltage)Themaximuminstantaneouspowerisexpressedintermso
...