SIST EN 301 165 V1.1.2:2003

• Abstract:

  The revision of this document is exclusively restricted to the provisions related to Safety. As it is a change in the reference mechanism, and it does not include a technical change, the revision will be editorial.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.20 - Transmission systems
• ICS: 33.040.50 - Lines, connections and circuits
• 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
• Mandate: T-324
• Ref Project: ETSI EN 301 165 V1.1.2 (2000-06) - Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); SDH leased lines; Connection Characteristics

SIST EN 301 165 V1.1.2:2003 is the Slovenian adoption of ETSI EN 301 165 V1.1.2, a European Telecommunications Standard for SDH leased lines. It specifies the connection characteristics at the Network Termination Point (NTP) and Terminal Equipment (TE), including the relevant atomic functions, interface types, and path-layer behavior. It is written for network operators, equipment suppliers, installers, and test labs that need SDH leased line interfaces to interwork predictably.

What does SIST EN 301 165 V1.1.2:2003 specify?

SIST EN 301 165 V1.1.2:2003 defines the interface presentation of Synchronous Digital Hierarchy (SDH) leased lines and the technical requirements for electrical, optical, regenerator section, multiplex section, and SDH path layers. The standard is organized as a scope, references, definitions, interface clauses, and application clauses that adapt companion EN 300 417 parts to leased-line use.

The document is structured around:

• Clause 1 - Scope
• Clause 2 - References
• Clause 3 - Definitions, symbols and abbreviations
• Clause 4 - Network and terminal interfaces for Virtual Container (VC) leased line connection
• Clauses 5 to 8 - Application of EN 300 417-2-1, -3-1, -4-1 and -6-1
• Annexes A to F - supporting topics such as jitter, interconnection examples, protection models and additional adaptation functions

Annex	What it covers
Annex A	Jitter/wander in justification processes
Annex B	SDH/PDH interconnection examples
Annex C	Interaction between 2 Mbit/s and VC-12 signals for byte synchronous mapping
Annex D	Examples of linear trail and SNC protection models
Annex E	VC-3 to 44736 kbit/s adaptation functions
Annex F	VC-11 path layer functions

What are the key requirements of SIST EN 301 165 V1.1.2:2003?

SIST EN 301 165 V1.1.2:2003 is mainly a profile of existing SDH equipment requirements for leased lines. In practice, it tells a designer or buyer which SDH interfaces, layer functions, connectors, timing rules, and companion standards apply at the NTP and at TE.

• Scope of use - Clause 1 applies the standard to leased lines, including part-time leased lines, where setup or release does not require protocol exchange or other intervention at the NTP. This matters because the interface must behave as a direct leased-line presentation, not as a managed call setup service.

• Interface presentation - Clause 1 defines the leased-line provider interface at the NTP and says the document should be used with EN 301 164 for the connection characteristics between NTPs. This means the present standard covers the interface functions, while EN 301 164 covers the link between network termination points.

• Relevant SDH physical layers - Clause 1 and Clause 4 identify STM-1 electrical, STM-1 optical intra-office and 1300 nm short-haul, and STM-4 optical intra-office and 1300 nm short-haul interfaces. Interworking between different optical interfaces is allowed when suitable attenuation is inserted, so the interface plan has to match the actual optical budget.

• Network and terminal layer functions - Clause 4 separates Network Termination (NT) and TE functions for section layers and path layers. That structure matters because the network side and customer side do not necessarily terminate the same layers in the same place.

• VC-4 and lower-order VC path behavior - Clause 4.2 and 4.3 link VC-4 and lower-order VC behavior to timing by the appropriate TI signal, and they note that timing criteria from EN 300 417-4-1 cannot be applied directly to leased-line interfaces when remote indication depends on processing delay and round-trip delay. For a reader, this means test timing must reflect the leased-line interface arrangement, not only the abstract equipment model.

• Connector requirements - Clause 4.4 requires two 75 ohm coaxial sockets for electrical STM-1, one transmit and one receive, using either type 1.6/5.6 sockets or BNC sockets with the stated mating dimensions. For optical STM-N interfaces, two optical sockets are required, one transmit and one receive, but the sockets themselves are not fixed here.

• Safety and earthing context - Clause 4.5 keeps safety requirements outside the standard and points to CENELEC and related guidance. Clause 4.4 also connects the coaxial outer conductor to signal ground and warns about ground potential differences on customer premises.

• Numbering scheme - Clause 4.6 uses the AU-4, VC-4 and TU numbering scheme from EN 300 417-1-1. This matters for configuration records, testing, and fault tracing.

What terms does SIST EN 301 165 V1.1.2:2003 define?

• Atomic function - A function that is indivisible from the network point of view and is used to model SDH behavior at one layer.
• Trail termination function (TT) - An atomic function that generates, adds, and monitors integrity and supervision information for adapted information.
• Connection function (C) - An atomic function that relays information within a layer when connectivity exists, without modifying the information itself.
• Adaptation function (A) - An atomic function that transfers information between layer networks by changing how the information is represented.
• Characteristic Information (CI) - Signal information of a specific rate and format that is carried within and between sub-networks.
• Access Point (AP) - The reference point where an adapted signal is bound to trail termination or vice versa.
• Remote Defect Indication (RDI) - A signal that carries defect status back toward the originating network element.
• Remote Error Indication (REI) - A signal that carries the error count information detected at the sink back to the source side.

Who uses SIST EN 301 165 V1.1.2:2003?

SIST EN 301 165 V1.1.2:2003 is used by SDH network operators, transmission equipment manufacturers, interface designers, and test engineers. It is also relevant to buyers and quality teams who need to confirm that leased-line equipment presents the right electrical or optical STM-N interface and follows the same VC layer model as the network.

What changed in SIST EN 301 165 V1.1.2:2003 from the previous edition?

SIST EN 301 165 V1.1.2:2003 is recorded as a publication of version 1.1.2 after version 1.1.1. The revision is described as editorial and restricted to safety-related provisions, with no technical change stated in the scope.

Which standards are used with SIST EN 301 165 V1.1.2:2003?

SIST EN 301 165 V1.1.2:2003 relies on several named references for equipment, connectors, timing, and companion SDH behavior:

• EN 301 164 - connection characteristics between NTPs
• EN 300 417-2-1 - SDH and PDH physical section layer functions
• EN 300 417-3-1 - STM-N regenerator and multiplex section layer functions
• EN 300 417-4-1 - SDH path layer functions
• EN 300 417-6-1 - synchronization layer functions
• EN 60950 - information technology equipment safety
• IEC 60169-8 / IEC 60169-13 - coaxial connector types
• ISO/IEC 10173 - connector and contact assignments
• ITU-T G.825 / G.704 - jitter and framed signal behavior
• IEC 60364-5-548 - earthing arrangements
• EG 201 212 - interface safety classification

What does the SIST EN 301 165 V1.1.2:2003 document contain?

SIST EN 301 165 V1.1.2:2003 contains clause-by-clause applications of EN 300 417-2-1, -3-1, -4-1 and -6-1, with tables that mark items as normative, informative, or not relevant. It also contains figures that model STM-1 and STM-4 electrical and optical sections, VC-4 and lower-order VC path layers, and the related trail termination and adaptation functions.

The document uses these figures and tables to show how leased-line interfaces are built from SDH atomic functions, how remote indications and error indications are represented, and where timing or scrambling rules apply. The annexes add worked topic areas for jitter and wander, SDH/PDH interconnection, protection models, and extra VC adaptation cases.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); SDH leased lines; Connection Characteristics33.040.50Vodi, zveze in tokokrogiLines, connections and circuits33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 301 165 Version 1.1.2SIST EN 301 165 V1.1.2:2003en01-december-2003SIST EN 301 165 V1.1.2:2003SLOVENSKI
STANDARD
ETSIEN301165V1.1.2(2000-06)EuropeanStandard(Telecommunicationsseries)TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);SDHleasedlines;ConnectionCharacteristicsSIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)2ReferenceREN/TM-01087Keywordsleasedline,ONP,SDH,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.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)3ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.63Definitions,symbolsandabbreviations.73.1Definitions.73.2Symbols.93.3Abbreviations.104NetworkandterminalinterfacesforVirtualContainer(VC)leasedlineconnection.114.1SectionlayerfunctionsforNetworkTermination(NT)andTerminalEquipment(TE).114.1.1STM-1sectionlayersfunctionsforNTandTE.114.1.2STM-4sectionlayersfunctionsforNTandTE.144.2PathlayerfunctionsforNT.154.2.1NetworkpathlayerfunctionsforVC-4leasedlineconnections.154.2.2NetworkpathlayerfunctionsforlowerorderVCleasedlineconnections.154.3PathlayersfunctionsforTE.164.3.1TerminalpathlayerfunctionsforVC-4leasedlineconnections.164.3.2TerminalpathlayerfunctionsforlowerorderVCleasedlineconnections.164.4MechanicalcharacteristicsforNTandTEinterfaces.174.4.1ConnectorsfortheelectricalSTM-1interface.174.4.2ConnectorsforopticalSTM-Ninterfaces.174.5Safety.184.6AU/TUnumberingscheme.185ApplicationofEN300417-2-1.186ApplicationofEN300417-3-1.207ApplicationofEN300417-4-1.228ApplicationofEN300417-6-1.28Bibliography.30History.31SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).NationaltranspositiondatesDateoflatestannouncementofthisEN(doa):30September2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2001DateofwithdrawalofanyconflictingNationalStandard(dow):31March2001SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)51ScopeThepresentdocumentdefinestheatomicfunctionsrelevantfortheinterfacepresentationsofSynchronousDigitalHierarchy(SDH)leasedlinesattheNetworkTerminationPoint(NTP)andtheTerminalEquipment(TE).Itspecifiesthetechnicalrequirementsforelectrical,optical,regeneratorandmultiplexsectionlayerandSDHpathlayers.Thespecificationispresentedasadeltainformationoftheequipmentspecificationof:− EN300417-2-1[8]forSTM-1electricalandopticalandSTM-4opticalsectionlayer;− EN300417-3-1[9]forSTM-1andSTM-4regeneratorsectionandmultiplexsectionlayer;− EN300417-4-1[10]forSDHpathlayers(VC-4,VC-3,VC-2andVC-12);− EN300417-6-1[11]forsynchronizationlayerfunctions.Thefollowingphysicalsectionlayersareused:− STM-1electricalinterface;− STM-1opticalintra-officeinterface;− STM-1opticalshorthaulinterfacesat1300nm;− STM-4opticalintra-officeinterface;− STM-4opticalshorthaulinterfacesat1300nm.Theinterfacemarginsaredefinedsuch,thatinterconnectionofdifferentopticalinterfacesispossiblewhenanappropriateattenuationisinserted.AconnectionispresentedviainterfacesatNTPs.Thepresentdocumentdefinesthenetworkinterfaceaspresentedbytheleasedlineproviderandshouldbeusedinconjunctionwiththecompanionstandard,EN301164[5],specifyingtheconnectioncharacteristicsbetweenNTPsoftheleasedline.Thepresentdocumentandtheconnectioncharacteristicstandardtogetherdescribethetechnicalcharacteristicsoftheleasedline.Thepresentdocumentisapplicableforleasedlines,includingparttimeleasedlines,forwhichtheestablishmentorreleasedoesnotrequireanyprotocolexchangeorotherinterventionattheNTP.ThepresentdocumentistoensurethattheinterfaceoftheterminalequipmentiscompatiblewiththeSDHleasedlineinterface.ThepresentdocumentisapplicabletoallinterfacesdesignedforconnectiontotheSDHleasedlines.CustomerpremiseswiringandinstallationbetweenterminalequipmentandtheNTPareoutsidethescopeofthepresentdocument.TheconformancetestofthesectionandpathlayerfunctionswillbeaddressedunderworkitemsEN300417-x-3(x=2,3,4and6).SomeofthetestsdescribedinthoseENsarenotdesignedtobeappliedtotheinterfaceofaninstalledleasedline;suchtestsmaybeappliedtoequipmentofthekindusedtoprovidetheinterface.Thepresentdocumentdoesnotincludeextradetailsconcerningtheimplementationoftests,nordoesitincludeinformationofanyrelevantregulations.ThepresentdocumentdoesnotspecifythecircumstancesinwhichthetestsgiveninEN300417-x-3(x=2,3,4and6)aretobeperformed.SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)62ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]EN60950:"Safetyofinformationtechnologyequipment,includingelectricalbusinessequipment".[2]IEC60169-8(1978):"Radio-frequencyconnectors-Part8:R.F.coaxialconnectorswithinnerdiameterofouterconductor6.5mm(0.256in)withbayonetlock-Characteristicimpedance50Ω(TypeBNC)".[3]IEC60169-13(1976):"Radio-frequencyconnectors-Part13:R.F.coaxialconnectorswithinnerdiameterofouterconductor5.6mm(0.22in)-Characteristicimpedance75Ω(Type1.6/5.6)-Characteristicimpedance50Ω(Type1.8/5.6)withsimilarmatingdimensions".[4]ISO/IEC10173(1998):"Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-InterfaceconnectorandcontactassignmentsforISDNprimaryrateaccessconnectorlocatedatreferencepointsSandT".[5]ETSIEN301164:"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);SDHleasedlines;Connectioncharacteristics".[6]ETSIETS300147(1997):"TransmissionandMultiplexing(TM);SynchronousDigitalHierarchy(SDH);Multiplexingstructure".[7]ETSIEN300417-1-1:"TransmissionandMultiplexing(TM);Genericrequirementsoftransportfunctionalityofequipment;Part1-1:Genericprocessesandperformance".[8]ETSIEN300417-2-1:"TransmissionandMultiplexing(TM);Genericrequirementsoftransportfunctionalityofequipment;Part2-1:SynchronousDigitalHierarchy(SDH)andPlesiochronousDigitalHierarchy(PDH)physicalsectionlayerfunctions".[9]ETSIEN300417-3-1:"TransmissionandMultiplexing(TM);Genericrequirementsoftransportfunctionalityofequipment;Part3-1:SynchronousTransportModule-N(STM-N)regeneratorandmultiplexsectionlayerfunctions".[10]ETSIEN300417-4-1:"TransmissionandMultiplexing(TM);Genericrequirementsoftransportfunctionalityofequipment;Part4-1:SynchronousDigitalHierarchy(SDH)pathlayerfunctions".[11]ETSIEN300417-6-1:"TransmissionandMultiplexing(TM);Genericrequirementsoftransportfunctionalityofequipment;Part6-1:Synchronizationlayerfunctions".[12]ITU-TRecommendationG.825(1993):"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthesynchronousdigitalhierarchy(SDH)".[13]ITU-TRecommendationG.704(1995):"Synchronousframestructuresusedat1544,6312,2048,8488and44736kbit/shierarchicallevels".[14]IEC60364-5-548(1996):"Electricalinstallationsofbuildings-Part5:Selectionanderectionofelectricalequipment-Section548:Earthingarrangementsandequipotentialbondingforinformationtechnologyinstallations".SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)7[15]ETSIEG201212:"Electricalsafety;Classificationofinterfacesforequipmenttobeconnectedtotelecommunicationnetworks".3Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply.process:generictermforanactionoracollectionofactionsfunction:"process"definedfordigitaltransmissionhierarchies(e.g.PlesiochronousDigitalHierarchy(PDH),SynchronousDigitalHierarchy(SDH)),whichactsonacollectionofinputinformationtoproduceacollectionofoutputinformation.Afunctionisdistinguishedbythewayinwhichcharacteristicsofthecollection,orofmembersofthecollectionofoutputinformationdifferfromcharacteristicsofmembersofthecollectionofinputinformationatomicfunction:"function"whichifdividedintosimpler"functions"wouldceasetobeuniquelydefinedfordigitaltransmissionhierarchies.Itisthereforeindivisiblefromanetworkpointofview.Thefollowingatomicfunctionsaredefinedineachnetworklayer:− bi-directionalTrailTerminationfunction(._TT),TrailTerminationSourcefunction(._TT_So),TrailTerminationSinkfunction(._TT_Sk)andConnectionfunction(._C);− betweenclientandserverlayernetworksthreeadaptationfunctionsaredefined:AdaptationSinkfunction._A_Sk,AdaptationSourcefunction._A_So,andthebi-directionalAdaptationfunction._A.adaptationfunction:"atomicfunction"whichpassesacollectionofinformationbetweenlayernetworksbychangingthewayinwhichthecollectionofinformationisrepresentedtrailterminationfunction:"atomicfunction"withina"layer"whichgenerates,adds,andmonitorsinformationconcerningtheintegrityandsupervisionof"adaptedinformation"connectionfunction:"atomicfunction"withinalayerwhich,ifconnectivityexists,relaysacollectionofitemsofinformationbetweengroupsofatomicfunctions.Itdoesnotmodifythemembersofthiscollectionofitemsofinformationalthoughitmayterminateanyswitchingprotocolinformationandactuponit.Anyconnectivityrestrictionsbetweeninputsandoutputsshallbestatedlayer:conceptusedtoallowthetransportnetworkfunctionalitytobedescribedhierarchicallyassuccessivelevels;eachlayerbeingsolelyconcernedwiththegenerationandtransferofits"characteristicinformation"client/serverlayer:anytwoadjacentnetworklayersareassociatedinaclient/serverrelationship.Eachtransportnetworklayerprovidestransporttothelayeraboveandusestransportfromthelayersbelow.Thelayerprovidingtransportistermeda"server",thelayerusingtransportistermed"client"RemoteDefectIndication(RDI):signalwhichconveysthedefectstatusofthecharacteristicinformationreceivedbytheTrailTerminationsinkfunctionbacktothenetworkelementwhichcontainsthecharacteristicinformationoriginatingtrailterminationsourcefunction.ExamplesofRDIsignalsaretheFarEndReceiveFailure(FERF)bit(s)inSDHsignals,theA-bitinITU-TRecommendationG.704[13]structured2048kbit/ssignalsandthealarmindicationbitinotherPDHmultiplexsignalsRemoteErrorIndication(REI):signalwhichconveyseithertheexactortruncatednumberoferrordetectioncodeviolationswithinthecharacteristicinformation(asdetectedbythetrailterminationsinkfunction)backtothenetworkelementwhichcontainsthecharacteristicinformationoriginatingtrailterminationsourcefunction.ExamplesofREIsignalsaretheFarEndBlockError(FEBE)bit(s)inSDHsignalsandtheE-bitinITU-TRecommendationG.704[13]structured2048kbit/ssignalsall-ONEs:entirecapacityoftheadaptedorcharacteristicinformationissettologic"1"SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)8AU-4-AIS:STM-NsignalinwhichtheentirecapacityofanAdministrativeUnit4(AU-4)issettologic"1"TU-m-AIS:STM-NsignalinwhichtheentirecapacityofaTU-missettologic"1"CharacteristicInformation(CI):signalofspecificrateandformatwhichistransferredwithinandbetween"sub-networks",andpresentedtoan"adaptation"functionfor"transport"bytheserverlayernetworkRemoteInformation(RI):informationflowfromsinkdirectiontosourcedirectionofthesameatomicfunctioninunidirectionalrepresentation,containinginformationtobetransportedtotheremoteend,suchasRDIandREIAccessPoint(AP):"referencepoint"wheretheoutputofan"adaptation"sourcefunctionisboundtotheinputofa"TrailTermination(TT)source",orwheretheoutputofa"trailterminationsink"isboundtotheinputofan"adaptation"sinkfunction.The"accesspoint"ischaracterizedbytheadaptedclientlayer"characteristicinformation"whichpassesacrossit.Abi-directional"accesspoint"isformedbyanassociatedcontra-directionalpairConnectionPoint(CP):"referencepoint"wheretheoutputofa"trailterminationsource"ora"connection"isboundtotheinputofanother"connection",orwheretheoutputofa"connection"isboundtotheinputofa"trailterminationsink".The"connectionpoint"ischaracterizedbytheinformation,whichpassesacrossit.Abi-directional"connectionpoint"isformedbytheassociationofacontra-directionalpairNOTE1:IntheinformationmodeltheconnectionpointiscalledConnectionTerminationPoint(CTP).TerminationConnectionPoint(TCP):specialcaseofa"connectionpoint"wherea"trailtermination"functionisboundtoan"adaptation"functionora"connection"functionNOTE2:IntheinformationmodeltheterminationconnectionpointiscalledTrailTerminationPoint(TTP).defect:densityofanomalieshasreachedalevelwheretheabilitytoperformarequiredfunctionhasbeeninterrupted.Defectsareusedasinputforperformancemanagement,thecontrolofconsequentactions,andthedeterminationoffaultcauseSIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)93.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:Thediagrammaticconventionsandnomenclatureusedinthepresentdocumentforadaptation,terminationandconnectionfunctions(usedtodescribetheatomicfunctions)aretakenfromEN300417-1-1[7]andareshowninFigure1.SinkSinkSourceSourcebidirectionalbidirectionalbidirectionalunidirectionalAdaptationfunctionsfromServerlayerYtoClientlayerZY/ZY/ZY/ZYYYTrailTerminationfunctionsinlayerYConnectionfunctionsinlayerYYYY/ZYY/ZYY/ZYbidirectionalSourceSinkTrailTerminationfunctioninlayerYandAdaptationfunctiontolayerZSinkSourcebidirectionalCompoundAdaptationfunctionsfromServerlayerYtoClientlayerZY/ZY/ZY/ZNOTE:Iftheabovesymbolsareusedforgenericfigures,i.e.notforspecificlayers,thelayerreferencesYandZmaybeomitted.Alternatively,thereferencesmaybetothetypeoffunctionorlayer,e.g.supervision,protection.Figure1:SymbolsanddiagrammaticconventionsSIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)103.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:AAdaptationfunctionAIAdaptedInformationAISAlarmIndicationSignalAPAccessPointAUAdministrativeUnitAU-nAdministrativeUnit,levelnAUGAdministrativeUnitGroupCConnectionfunctionCICharacteristicInformationCPConnectionPointCTPConnectionTerminationPointESElectricalSectionES1STM-1ElectricalSectionFEBEFarEndBlockErrorFERFFarEndReceiveFailureIInformativeLCLayerClockLOFLossOfFrameLOMLossOfMultiframeLOPLossOfPointerLOSLossOfSignalMSMultiplexSectionMS1STM-1MultiplexSectionMS4STM-4MultiplexSectionNNormativeN/RNotRelevantNNINetworkNodeInterfaceNTNetworkTerminationNTPNetworkTerminationPointOSOpticalSectionOS1STM-1OpticalSectionOS4STM-4OpticalSectionPDHPlesiochronousDigitalHierarchyPLMPayLoadMismatchRDIRemoteDefectIndicationREIRemoteErrorIndicationRIRemoteInformationRSRegeneratorSectionRS1STM-1RegeneratorSectionRS4STM-4RegeneratorSectionRSOHRegeneratorSectionOverheadS12VC-12pathlayerS2VC-2pathlayerS3VC-3pathlayerS4VC-4pathlayerS4/SXVC-4pathlayertolowerorderVCpathlayerSDHSynchronousDigitalHierarchySkSinkSoSourceSSFServerSignalFailSTMSynchronousTransportModuleSTM-NSynchronousTransportModule,levelNTCPTerminationConnectionPointTETerminalEquipmentTITimingInformationTSFTrailSignalFailSIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)11TTTrailTerminationfunctionTTsTrailTerminationsupervisoryfunctionTTPTrailTerminationPointTUTributaryUnitTU-mTributaryUnit,levelmTUGTributaryUnitGroupTUG-mTributaryUnitGroup,levelmUNEQUnequippedVCVirtualContainerVC-nVirtualContainer,leveln4NetworkandterminalinterfacesforVirtualContainer(VC)leasedlineconnection4.1SectionlayerfunctionsforNetworkTermination(NT)andTerminalEquipment(TE)4.1.1STM-1sectionlayersfunctionsforNTandTETherelevantsectionlayerfunctionsofelectricalandopticalSTM-1interfacesforNTandTEareshowninFigure2andFigure3respectively.Thedetailsoftheatomicfunctionsshowninthesefiguresaregiveninclauses5and6ofthepresentdocument.Twotypesofopticalinterfacesarerelevantforleasedlineconnections.Thesearetheintraofficeinterface(I1)andtheshorthaulinterfaceat1300nm(S1.1).SIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)12RS1RS1/MS1RS1RS1/MS1RS1_CIRS1_CIRS1_AIRS1_AIES1ES1ES1/RS1ES1/RS1ES1_CRS1_CES1_CIES1_CIES1_AIES1_AIMS1MS1/S4MS1MS1/S4MS1_CIMS1_CIMS1/SDMS1/SDSD_CISD_CIS1[5-8]S1[5-8]RI_RDIRI_REIMS1_CSTM1_TIMS1-LCFigure2:SectionlayersofaSTM-1electricalinterfaceforNTandTESIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)13RS1RS1/MS1RS1RS1/MS1RS1_CIRS1_CIRS1_AIRS1_AIOS1OS1OS1/RS1OS1/RS1OS1_CRS1_COS1_CIOS1_CIOS1_AIOS1_AIMS1MS1/S4MS1MS1/S4MS1_CIMS1_CIMS1/SDMS1/SDSD_CISD_CIS1[5-8]S1[5-8]RI_RDIRI_REIMS1_CSTM1_TIMS1-LCFigure3:SectionlayersofanopticalSTM-1interfaceforNTandTESIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)144.1.2STM-4sectionlayersfunctionsforNTandTETherelevantsectionlayerfunctionsofopticalSTM-4interfacesforNTandTEareshowninFigure4.Thedetailsoftheatomicfunctionsshowninthesefiguresaregiveninclauses5and6ofthepresentdocument.Twotypesofopticalinterfacesarerelevantforleasedlineconnections.Thesearetheintraofficeinterface(I4)andtheshorthaulinterfaceat1300nm(S4.1).RS4RS4/MS4RS4RS4/MS4RS4_CIRS4_CIRS4_AIRS4_AIOS4OS4OS4/RS4OS4/RS4OS4_CRS4_COS4_CIOS4_CIOS4_AIOS4_AIMS4MS4S4_CIMS4_CIMS4_CIMS4/SDMS4/SDSD_CISD_CIS1[5-8]S1[5-8]RI_RDIRI_REIMS4_CMS4/S4STM4_TI14MS4-LCSD_CIS4_CIMS4/S414Figure4:SectionlayersofanSTM-4interfaceforNTandTESIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)154.2PathlayerfunctionsforNT4.2.1NetworkpathlayerfunctionsforVC-4leasedlineconnectionsTherearenorequirementsontheVC-4pathlayerfunctionsforVC-4leasedlineconnectionsunderthepresentdocument.NOTE:TheconnectioncharacteristicsoftheVC-4pathlayerarespecifiedinthecompanionstandardEN301164[5].4.2.2NetworkpathlayerfunctionsforlowerorderVCleasedlineconnectionsTherelevantVC-4pathlayerfunctionsofanNTareshowninFigure5.Theirdetailsarespecifiedinclause7ofthepresentdocument.ThetimetakenforappearanceofremoteindicationofdefectsandblockerrorsdependsontheprocessingtimeoftheequipmentterminatingtheVC-4andtheroundtripdelaybetweenthatequipmentandtheleasedlineinterface.ThereforethetimingcriteriaforsettingandclearingofVC-4-RDIandVC-4-REIasgivenintheequipmentspecificationEN300417-4-1[10]cannotbedirectlyappliedtothepresentdocument.TherearenorequirementsonthelowerorderVCpathlayerfunctionsforlowerorderVCleasedlineconnectionsunderthepresentdocument.NOTE:TheconnectioncharacteristicsofthelowerorderVCpathlayersarespecifiedinthecompanionstandardEN301164[5].S4RI_RDIRI_REIS4/SXS4_AIS2_CIS12_CIS3_CIS4/SXS2_CIS12_CIS3_CIS4_CS4_CIS4_CIS4_AIS4S4-LCSD_CIS4_TIFigure5:NTpathlayerforlowerorderVCconnectionsSIST EN 301 165 V1.1.2:2003

ETSIETSIEN301165V1.1.2(2000-06)164.3PathlayersfunctionsforTE4.3.1TerminalpathlayerfunctionsforVC-4leasedlineconnectionsTherelevantVC-4pathlayerfunctionsofaTEareshowninFigure6.Theirdetailsarespecifiedinclause7ofthepresentdocument.Therearenorequirementsontheadaptationfunctionswithtwoexceptions:− theyshallbetimedbytheS4-TIsignal;− VC-4payloadsignalsthemappingofwhichisnotdefinedinETS300147[6]shallbescrambledwhenemulationoftheSTM-Nscramblerpolynomial1+x6+x7inmorethan8consecutivebytesoftheVC-4payloadcouldoccur.Scramblingisnotnecessarywhentheclientlayertakeactionstoexcludetheemulationofthescramblerpolynomialinmorethan8consecutivebytesoftheVC-4payload.NOTE:Scramblingprovidessecurityag
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