SIST EN 300 462-7-1 V1.1.2:2003

Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 7-1: Timing characteristics of slave clocks suitable for synchronization supply to equipment in local node applications

Standardize timing characteristics of slave clocks suitable for synchronization supply to equipment in local node applications

Prenos in multipleksiranje (TM) – Generične zahteve za sinhronizacijska omrežja – 7-1. del: Časovne značilnosti podrejenih ur, primernih za sinhronizacijo opreme v aplikacijah krajevnih vozlišč

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.20 - Transmission systems
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 462-7-1 V1.1.2 (2001-06) - Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 7-1: Timing characteristics of slave clocks suitable for synchronization supply to equipment in local node applications

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 7-1: Timing characteristics of slave clocks suitable for synchronization supply to equipment in local node applications33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 300 462-7-1 Version 1.1.2SIST EN 300 462-7-1 V1.1.2:2003en01-december-2003SIST EN 300 462-7-1 V1.1.2:2003SLOVENSKI
STANDARD



SIST EN 300 462-7-1 V1.1.2:2003



ETSIEN300462-7-1V1.1.2(2001-06)EuropeanStandard(Telecommunicationsseries)TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part7-1:TimingcharacteristicsofslaveclockssuitableforsynchronizationsupplytoequipmentinlocalnodeapplicationsSIST EN 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)2ReferenceDEN/TM-01057-7-1Keywordsnetwork,synchronization,transmissionETSI650RoutedesLuciolesF-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 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.64Frequencyaccuracy.75Pull-inandpull-outranges.76Noisegeneration.76.1Wanderinlockedmode.76.2Non-lockedwander.96.3Jitter.96.3.1Outputjitterata2048kHzand2048kbit/sinterface.96.3.2OutputjitterataSynchronousTransportModuleN(STM-N)interface.97Noisetolerance.107.1Jittertolerance.107.2Wandertolerance.118Transfercharacteristic.139Transientresponseandholdoverperformance.139.1Phaseresponseduringinputreferenceswitching.139.2PhaseresponseduringHold-overoperation.149.3Phaseresponsetoinputsignalinterruptions.149.4Phasediscontinuity.1510Interfaces.15AnnexA(informative):Bibliography.16History.17SIST EN 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)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)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).Thepresentdocumentispart7-1ofamulti-partdeliverablecoveringTransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks,asidentifiedbelow:Part1-1:"Definitionsandterminologyforsynchronizationnetworks";Part2-1:"Synchronizationnetworkarchitecture";Part3-1:"Thecontrolofjitterandwanderwithinsynchronizationnetworks";Part4-1:"TimingcharacteristicsofslaveclockssuitableforsynchronizationsupplytoSynchronousDigitalHierarchy(SDH)andPlesiochronousDigitalHierarchy(PDH)equipment";Part4-2:"TimingcharacteristicsofslaveclockssuitableforsynchronizationsupplytoSynchronousDigitalHierarchy(SDH)andPlesiochronousDigitalHierarchy(PDH)equipment;ImplementationConformanceStatement(ICS)proformaspecification";Part5-1:"TimingcharacteristicsofslaveclockssuitableforoperationinSynchronousDigitalHierarchy(SDH)equipment";Part6-1:"Timingcharacteristicsofprimaryreferenceclocks".Part6-2:"Timingcharacteristicsofprimaryreferenceclocks;ImplementationConformanceStatement(ICS)proformaspecification";Part7-1:"Timingcharacteristicsofslaveclockssuitableforsynchronizationsupplytoequipmentinlocalnodeapplications".NationaltranspositiondatesDateofadoptionofthisEN:1June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)51ScopeThepresentdocumentoutlinesrequirementsfortimingdevicescalledSynchronizationSupplyUnitsforlocalnodeapplications(SSU-Ls).ThisSSUisusedinsynchronizingnetworkequipmentintheSynchronousDigitalHierarchy(SDH)transportnetwork,inthePublicSwitchedTelephoneNetwork(PSTN)andinthePublicLandMobileNetworks(PLMN)forlocalnodeapplications.ThelastSSUinaSynchronizationchain,irrespectiveofthetrafficnetwork,providestheapplicationsforthistypeofclock.NOTE:TherequirementsinthepresentdocumentapplyunderenvironmentalconditionsaccordingtooneoftheenvironmentalclassesdefinedinETS300019[1],unlessstatedotherwise.Themanufacturerwillneedtospecifytowhichspecificenvironmentalclasstheequipmentbelongs.AdescriptionoftheSynchronizationSupplyUnit(SSU)logicalfunctionisgiveninfigure1inEN300462-2-1[3].Ingeneral,theSSUwillhavemultipletimingreferenceinputsandintheeventthatalltimingreferencesfail,theSSUshouldbecapableofmaintainingoperation(holdover)withinprescribedperformancelimitsasdetailedinthepresentdocument.TherequirementslaiddowninthepresentdocumentdescribetheminimumperformanceofanSSUappliedasalocalnodeclock(SSU-L).RequirementsfortransitnodeclockapplicationsforSSU'saredescribedinEN300462-4-1[5].TheSSU-LfunctioncanbeimplementedinaseparatepieceofequipmentcalledaStand-AloneSynchronizationEquipment(SASE)oritcanformalogicalfunctionofanotherequipmentsuchasatelephonyexchangeoranSDHcross-connect.Therequirementsspecifiedinthepresentdocumentrefertothedesignofnewsynchronizationnetworksandconsequentlytheydonotnecessarilyrepresenttheperformanceofexistingsynchronizationnetworkandequipment.AtimingdevicewithinSDHequipmentcanalsoconformtoEN300462-5-1[6].ThecharacteristicsrelatedtoholdoverandnoisegenerationperformancemakethistypeofclockalsosuitableforapplicationintheGSMradiosub-system(seeTS100912[7]).InparticularasaclockusedbyaBaseStationController(BSC)orbyaMobileSwitchingCentre(MSC),furthersynchronizing(typicallyviaatrafficlink)theBaseStation(BS).ThecharacteristicsofthisclockarenotoptimizedforaclocktobeimplementedintheBS.InordertofulfilthefrequencyaccuracyrequirementsrequiredintheGSMradiointerface,thisclockshouldbeconnectedtoasynchronizationnetworkthatisproperlydesignedandcorrectlyoperating.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIETS300019:"EquipmentEngineering(EE);Environmentalconditionsandenvironmentaltestsfortelecommunicationsequipment".[2]ETSIEN300462-1-1:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part1-1:Definitionsandterminologyforsynchronizationnetworks".[3]ETSIEN300462-2-1:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part2-1:Synchronizationnetworkarchitecture".SIST EN 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)6[4]ETSIEN300462-3-1:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part3-1:Thecontrolofjitterandwanderwithinsynchronizationnetworks".[5]ETSIEN300462-4-1:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part4-1:TimingcharacteristicsofslaveclockssuitableforsynchronizationsupplytoSynchronousDigitalHierarchy(SDH)andPlesiochronousDigitalHierarchy(PDH)equipment".[6]ETSIEN300462-5-1:"TransmissionandMultiplexing(TM);Genericrequirementsforsynchronizationnetworks;Part5-1:TimingcharacteristicsofslaveclockssuitableforoperationinSynchronousDigitalHierarchy(SDH)equipment".[7]ETSITS100912(GSM05.10):"Digitalcellulartelecommunicationssystem(Phase2+);Radiosubsystemsynchronization(3GPPTS05.10version8.8.0Release1999)".[8]ETSIETS300166:"TransmissionandMultiplexing(TM);Physicalandelectricalcharacteristicsofhierarchicaldigitalinterfacesforequipmentusingthe2048kbit/s-basedplesiochronousorsynchronousdigitalhierarchies".[9]ITU-TRecommendationG.825:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthesynchronousdigitalhierarchy(SDH)".[10]ITU-TRecommendationG.823:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthe2048kbit/shierarchy".[11]ITU-TRecommendationO.172:"JitterandwandermeasuringequipmentfordigitalsystemswhicharebasedontheSynchronousDigitalHierarchy(SDH)".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgiveninEN300462-1-1[2]apply.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:BSBaseStationBSCBaseStationControllerGSMGlobalSystemforMobilecommunicationsITU-TInternationalTelecommunicationsUnion-TelecommunicationsStandardizationSectorMSCMobileSwitchingCentreMTIEMaximumTimeIntervalErrorNENetworkElementPDHPlesiochronousDigitalHierarchyppmpartspermillionPSTNPublicSwitchedTelephoneNetworkSASEStandAloneSynchronizationEquipmentSDHSynchronousDigitalHierarchySSUSynchronizationSupplyUnitSSU-LSSULocalSTM-1optOpticalSTM-1interfaceSTM-1elElectricalSTM-1interfaceSIST EN 300 462-7-1 V1.1.2:2003



ETSIETSIEN300462-7-1V1.1.2(2001-06)7STM-NSynchronousTransportModule-NTDEVTimeDEViationUIUnitIntervalUIppUnitIntervalpeaktopeakAfulllistofabbreviationsusedintimingandsynchronizationislistedinEN300462-1-1[2].4FrequencyaccuracyThelong-termfrequencyaccuracynormallyapplieswhenoperatinginlongtermfreerunningconditions.SincetheSSU-Lisaslaveclock,thenthenormaloperatingmodesareeitherlockedorholdover.Thefrequencyaccuracyspecificationinholdovermodeisspecifiedinclause9.5Pull-inandpull-outrangesTheminimumpull-inrangeshallbe±0,5ppm,whatevertheinternaloscillatorfrequencyoffsetmaybe.Thepull-outrangeisforfurtherstudy.6NoisegenerationThenoisegenerationofanSSU-Lrepresentstheamountofphasenoiseproducedattheoutputwhenthereisanidealinputreferencesignalortheclockisinholdoverstate.Asuitablereference,forpracticaltestingpurposes,impliesaperformancelevelatleast10timesmorestablethantheoutputrequirements.Theabilityoftheclocktolimitthisnoiseisdescribedbyitsfrequencystability.ThemeasuresMTIEandT
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