ETSI EN 300 417-2-1 V1.1.3 (1999-05)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.XQNFLRQDOQRVWTransmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 2-1: Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physical section layer functions33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 300 417-2-1 Version 1.1.3SIST EN 300 417-2-1 V1.1.3:2003en01-december-2003SIST EN 300 417-2-1 V1.1.3:2003SLOVENSKI
STANDARD
EN 300 417-2-1 V1.1.3 (1999-05)European Standard (Telecommunications series)Transmission and Multiplexing (TM);Generic requirements of transport functionality of equipment;Part 2-1: Synchronous Digital Hierarchy (SDH) andPlesiochronous Digital Hierarchy (PDH)physical section layer functionsSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)2ReferenceREN/TM-01015-2-1a (3v0i9ie0.PDF)KeywordsSDH, transmission, interfaceETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1999.All rights reserved.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)3ContentsIntellectual Property Rights.6Foreword.61Scope.82References.83Definitions, abbreviations and symbols.93.1Definitions.93.2Abbreviations.93.3Symbols and diagrammatic conventions.143.4Introduction.144STM-1 Optical Section Layer Functions.144.1Optical Section Connection functions.154.2Optical Section Trail Termination functions.154.2.1Optical Section Trail Termination Source OS1-Xy.z_TT_So.154.2.2Optical Section Trail Termination Sink OS1-Xy.z_TT_Sk.174.3Optical Section Adaptation functions.184.3.1Optical Section to Regenerator Section Adaptation Source OS1/RS1_A_So.184.3.2Optical Section to Regenerator Section Adaptation Sink OS1/RS1_A_Sk.195STM-4 Optical Section Layer Functions.215.1Optical Section Connection functions.215.2Optical Section Trail Termination functions.225.2.1Optical Section Trail Termination Source OS4-Xy.z_TT_So.225.2.2Optical Section Trail Termination Sink OS4-Xy.z_TT_Sk.235.3Optical Section Adaptation functions.245.3.1Optical Section to Regenerator Section Adaptation Source OS4/RS4_A_So.245.3.2Optical Section to Regenerator Section Adaptation Sink OS4/RS4_A_Sk.256STM-16 Optical Section Layer Functions.276.1Optical Section Connection functions.286.2Optical Section Trail Termination functions.286.2.1Optical Section Trail Termination Source OS16-Xy.z_TT_So.286.2.2Optical Section Trail Termination Sink OS16-Xy.z_TT_Sk.296.3Optical Section Adaptation functions.306.3.1Optical Section to Regenerator Section Adaptation Source OS16/RS16_A_So.306.3.2Optical Section to Regenerator Section Adaptation Sink OS16/RS16_A_Sk.317STM-64 Optical Section Layer Functions.338STM-1 Electrical Section Layer Functions.338.1STM-1 Electrical Section Connection function ES1_C.338.2STM-1 Electrical Section Trail Termination functions.348.2.1STM-1 Electrical Section Trail Termination Source ES1_TT_So.348.2.2STM-1 Electrical Section Trail Termination Sink ES1_TT_Sk.358.3STM-1 Electrical Section Adaptation functions.368.3.1STM-1 Electrical Section to Regenerator Section Adaptation Source ES1/RS1_A_So.368.3.2STM-1 Electrical Section to Regenerator Section Adaptation Sink ES1/RS1_A_Sk.379E4 Section Layer Functions.399.1E4 Connection function E4_C.409.2E4 Trail Termination functions.409.2.1E4 Trail Termination Source E4_TT_So.409.2.2E4 Trail Termination Sink E4_TT_Sk.429.3E4 Adaptation functions.439.3.1E4 to P4x Adaptation Source E4/P4x_A_So.439.3.2E4 to P4x Adaptation Sink E4/P4x_A_Sk.449.3.3E4 to P4e Adaptation Source E4/P4e_A_So.45SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)49.3.4E4 to P4e Adaptation Sink E4/P4e_A_Sk.469.3.5E4 to P4s Adaptation Source E4/P4s_A_So.489.3.6E4 to P4s Adaptation Sink E4/P4s_A_Sk.4910E31 Section Layer Functions.5110.1E31 Connection function E31_C.5210.2E31 Trail Termination functions.5210.2.1E31 Trail Termination Source E31_TT_So.5210.2.2E31 Trail Termination Sink E31_TT_Sk.5410.3E31 Adaptation functions.5510.3.1E31 to P31x Adaptation Source E31/P31x_A_So.5510.3.2E31 to P31x Adaptation Sink E31/P31x_A_Sk.5610.3.3E31 to P31e Adaptation Source E31/P31e_A_So.5710.3.4E31 to P31e Adaptation Sink E31/P31e_A_Sk.5810.3.5E31 to P31s Adaptation Source E31/P31s_A_So.6010.3.6E31 to P31s Adaptation Sink E31/P31s_A_Sk.6111E22 Section Layer Functions.6311.1E22 Connection function E22_C.6311.2E22 Trail Termination functions.6411.2.1E22 Trail Termination Source E22_TT_So.6411.2.2E22 Trail Termination Sink E22_TT_Sk.6511.3E22 Adaptation functions.6611.3.1E22 to P22x Adaptation Source E22/P22x_A_So.6611.3.2E22 to P22x Adaptation Sink E22/P22x_A_Sk.6711.3.3E22 to P22e Adaptation Source E22/P22e_A_So.6811.3.4E22 to P22e Adaptation Sink E22/P22e_A_Sk.6912E12 Section Layer Functions.7112.1E12 Connection function E12_C.7212.2E12 Trail Termination functions.7312.2.1E12 Trail Termination Source E12-Z_TT_So.7312.2.2E12 Trail Termination Sink E12-Z_TT_Sk.7412.3E12 Adaptation functions.7512.3.1E12 to P12x Adaptation Source E12/P12x_A_So.7512.3.2E12 to P12x Adaptation Sink E12/P12x_A_Sk.7612.3.3E12 to P12s Adaptation Source E12/P12s_A_So.7712.3.4E12 to P12s Adaptation Sink E12/P12s_A_Sk.7813T12 Section Layer Functions.8013.1T12 Connection function T12_C.8013.2T12 Trail Termination functions.8013.2.1T12 Trail Termination Source T12-Z_TT_So.8013.2.2T12 Trail Termination Sink T12-Z_TT_Sk.8213.3T12 Adaptation functions.8313.3.1T12 to SD Adaptation Source T12/SD_A_So.8313.3.2T12 to SD Adaptation Sink T12/SD_A_Sk.8314E0 Section Layer Functions.8314.1E0 Connection function E0_C.8314.2E0 Trail Termination functions.8414.2.1E0 Trail Termination Source E0_TT_So.8414.2.2E0 Trail Termination Sink E0_TT_Sk.8514.3E0 Adaptation functions.8614.3.1E0 to P0s Adaptation Source E0/P0s_A_So.8614.3.2E0 to P0s Adaptation Sink E0/P0s_A_Sk.87Annex A (informative):E32 Section Layer Functions.89A.1E32 Connection function E32_C.89A.2E32 Trail Termination functions.89A.2.1E32 Trail Termination Source E32_TT_So.89SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)5A.2.2E32 Trail Termination Sink E32_TT_Sk.91A.3E32 Adaptation functions.92A.3.1E32 to P32x Adaptation Source E32/P32x_A_So.92A.3.2E32 to P32x Adaptation Sink E32/P32x_A_Sk.93Annex B (informative):E11 Section Layer Functions.94B.1E11 Connection function E11_C.94B.2E11 Trail Termination functions.94B.2.1E11 Trail Termination Source E11_TT_So.94B.2.2E11 Trail Termination Sink E11_TT_Sk.96B.3E11 Adaptation functions.97B.3.1E11 to P11x Adaptation Source E11/P11x-L_A_So.97B.3.2E11 to P11x Adaptation Sink E11/P11x-L_A_Sk.98Bibliography.99History.100SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)6Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmissionand Multiplexing (TM).The present document is one of a family of documents that has been produced in order to provide inter-vendor andinter-operator compatibility of Synchronous Digital Hierarchy (SDH) equipment.The present document is part 2-1 of a multi-part EN covering the generic requirements of transport functionality ofequipment, as identified below:Part 1-1:"Generic processes and performance".Part 1-2:"General information about Implementation Conformance Statement (ICS) proforma".Part 2-1:"Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physicalsection layer functions".Part 2-2:"Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physical sectionlayer functions; Implementation Conformance Statement (ICS) proforma specification".Part 3-1:"Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions".Part 3-2:"Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions;Implementaion Conformance Statement (ICS) proforma specification".Part 4-1:"Synchronous Digital Hierarchy (SDH) path layer functions".Part 4-2:"Synchronous Digital Hierarchy (SDH) path layer functions; Implementation Conformance Statement(ICS) proforma specification".Part 5-1:"Plesiochronous Digital Hierarchy (PDH) path layer functions".Part 5-2:"Plesiochronous Digital Hierarchy (PDH) path layer functions; Implementation Conformance Statement(ICS) proforma specification".Part 6-1:"Synchronization layer functions".Part 6-2:"Synchronization layer functions; Implementation Conformance Statement (ICS) proforma specification".Part 7-1:"Auxiliary layer functions".Part 7-2:"Auxiliary layer functions; Implementation Conformance Statement (ICS) proforma specification".Parts 2 to 7 specify the layers and their atomic functions.NOTE 1:The present document does not currently address configuration management.NOTE 2:The SDH radio equipment functional blocks are addressed by ETSI WG TM4.Various of the above parts have previously been published as parts of ETS 300 417.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)7They have been converted into parts of EN 300 417 without technical changes, but some editorial changes have beennecessary (e.g. references). In particular:-Parts 2-1, 2-2 and 3-2 have been modified to take account of editorial errors present in edition 1.-Part 1-1 has had its title change of to align with other parts published at a later date.Also note that in the meantime parts 8-1 and 8-2 together will all parts x-3 (Abstract Test Suites) have been stopped.This version of the present document has been published because the previous version had incorrect dates in thetransposition table.National transposition datesDate of latest announcement of this EN (doa):31 August 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):29 February 2000Date of withdrawal of any conflicting National Standard (dow):29 February 2000SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)81ScopeThe present document specifies a library of basic building blocks and a set of rules by which they are combined in orderto describe transport functionality of equipment. The library comprises the functional building blocks needed tocompletely specify the generic functional structure of the European transmission hierarchies. Equipment which iscompliant with the present document needs to be describable as an interconnection of a subset of these functional blockscontained within the present document. The interconnections of these blocks need to obey the combination rules given.The generic functionality is described in the EN 300 417-1-1 [8].2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]ANSI T1.102 (1993): "Telecommunications; Digital Hierarchy; Electrical Interfaces".[2]ANSI T1.107 (1988): "Telecommunications; Digital Hierarchy; Formats Specifications".[3]ETS 300 147: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH);Multiplexing structure".[4]ETS 300 166 (1993): "Transmission and Multiplexing (TM); Physical and electrical characteristicsof hierarchical digital interfaces for equipment using the 2 048 kbit/s - based plesiochronous orsynchronous digital hierarchies".[5]ETS 300 167: "Transmission and Multiplexing (TM); Functional characteristics of 2 048 kbit/sinterfaces".[6]ETS 300 232 (1993): "Transmission and Multiplexing (TM); Optical interfaces for equipments andsystems relating to the Synchronous Digital Hierarchy [ITU-T Recommendation G.957 (1993)modified]".[7]ETS 300 337: "Transmission and Multiplexing (TM); Generic frame structures for the transport ofvarious signals (including Asynchronous Transfer Mode (ATM) cells and Synchronous DigitalHierarchy (SDH) elements) at the ITU-T Recommendation G.702 hierarchical rates of 2 048kbit/s, 34 368 kbit/s and 139 264 kbit/s".[8]EN 300 417-1-1: "Transmission and Multiplexing (TM); Generic requirements of transportfunctionality of equipment; Part 1-1: Generic processes and performance".[9]EN 300 417–6–1: "Transmission and Multiplexing (TM); Generic requirements of transportfunctionality of equipment; Part 6-1: Synchronization distribution layer functions".[10]CCITT Recommendation G.703 (1991): "Physical/electrical characteristics of hierarchical digitalinterfaces".[11]CCITT Recommendation G.742 (1988): "Second order digital multiplex equipment operating at8 448 kbit/s and using positive justification".SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)9[12]CCITT Recommendation G.751 (1988): "Digital multiplex equipments operating at the third orderbit rate of 34 368 kbit/s and the fourth order bit rate of 139 264 kbit/s and using positivejustification".[13]ITU-T Recommendation G.775 (1994): "Loss of signal (LOS) and alarm indication signal (AIS)defect detection and clearance criteria".[14]ITU-T Recommendation G.823 (1993): "The control of jitter and wander within digital networkswhich are based on the 2 048 kbit/s hierarchy".[15]ITU-T Recommendation G.825: "The control of jitter and wander within digital networks whichare based on the synchronous digital hierarchy (SDH)".[16]ITU-T Recommendation G.958 (1994): "Digital line systems based on the synchronous digitalhierarchy for use on optical fibre cables".3Definitions, abbreviations and symbols3.1DefinitionsThe functional definitions are described in EN 300 417-1-1 [8].3.2AbbreviationsFor the purposes of the present document, the following abbreviations apply:AAdaptation functionAcSLAccepted Signal LabelAcTIAccepted Trace IdentifierADMAdd-Drop MultiplexerAIAdapted InformationAISAlarm Indication SignalALSAutomatic Laser ShutdownANSIAmerican National Standards InstituteAPAccess PointAPIdAccess Point IdentifierAPSAutomatic Protection SwitchATMAsynchronous Transfer ModeAUAdministrative UnitAUGAdministrative Unit GroupAU-nAdministrative Unit, level nBBEBackground Block ErrorBBERBackground Block Error RatioBERBit Error RatioBFABasic Frame AlignmentBIPBit Interleaved ParityBIP-NBit Interleaved Parity, width NBITSBuilding Integrated Timing SupplyBNFBackus-Naur FormBSHRBi-directional Self Healing RingCConnection functionCHCHannelCICharacteristic InformationCIDConsecutive Identical DigitsCKClocKCMConnection MatrixCMICoded Mark InversionCoConnectionSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)10CPConnection PointCRC Cyclic Redundancy CheckCRC-NCyclic Redundancy Check, width NCssupervisory-unequipped Connection functionCSESConsecutive Severely Errored SecondsCTFCompound Timing FunctionCtrlControlDDataDCCData Communications ChannelDECDECrementDEGDEGradedDEGTHRDEGraded THResholdDLData LinkDPRINGDedicated Protection RINGDROPDecreased Received Optical PowerDXCDigital Cross ConnectE0Electrical interface signal 64 kbit/sE11Electrical interface signal 1 544 kbit/sE12Electrical interface signal 2 048 kbit/sE22Electrical interface signal 8 448 kbit/sE31Electrical interface signal 34 368 kbit/sE32Electrical interface signal 44 736 kbit/sE4Electrical interface signal 139 264 kbit/sEBCErrored Block CountECCEmbedded Communications ChannelECC(x)Embedded Communications Channel, layer xEDCError Detection CodeEDCVError Detection Code ViolationEFSEquipment Functional SpecificationEMFEquipment Management FunctionEPSEquipment Protection SwitchEQEQuipmentERSElementary Regenerator SectionESElectrical SectionESErrored SecondESRErrored Seconds RatioExCCITT Recommendation G.703 [10] type electrical signal, bit rate order xExSLExpected Signal LabelExTIExpected Trace IdentifierF_BFar-end BlockF_BBEFar-end Background Block ErrorF_DSFar-end Defect SecondF_EBCFar-end Errored Block CountF_ESFar-end Errored SecondF_SESFar-end Severely Errored SecondF_SESTHRFar-end Severely Errored Second THResholdF_UAT_cmdFar-end UnAvailable Time commandFASFrame Alignment SignalFEBEFar End Block ErrorFERFFar End Receive FailureFIFOFirst In First OutFITFailure In TimeFOFrame Offset informationFOPFailure Of ProtocolFSFrame Start signalHDB3High Density Bipolar of order 3HDLCHigh-level Data Link Control procedureHOHigher OrderHOVCHigher Order Virtual ContainerHPHigher order PathSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)11IDIDentifierIFIn Frame stateINCINCrementIOSIntra-Office SectionISIntermediate SystemISDNIntegrated Services Digital NetworkISOInternational Standardization OrganizationITU-TInternational Telecommunications Union - Telecommunications SectorLANLocal Area NetworkLBCLaser Bias CurrentLCLink ConnectionLLCLogical Link ControlLMCLaser Modulation CurrentLOLower OrderLOALoss Of Alignment; generic for LOF, LOM, LOPLOFLoss Of FrameLOMLoss Of MultiframeLOPLoss Of PointerLOSLoss Of SignalLOTLoss of Octet TimingLOVCLower Order Virtual ContainerLPxLower order Path for VC-x (x = 11, 12, 2, 3)LTLine TerminationM&CFManagement & Communication FunctionMCMatrix ConnectionMCFMessage Communications FunctionMDTMean Down Timemeimaintenance event informationMIManagement InformationMOManaged ObjectMONMONitoredMPManagement PointMSMultiplex SectionMS1STM-1 Multiplex SectionMS16STM-16 Multiplex SectionMS4STM-4 Multiplex SectionMSBMost Significant BitMSOHMultiplex Section OverHeadMSPMultiplex Section ProtectionMSPGMultiplex Section Protection GroupMTBFMean Time Between FailuresMTTRMean Time To RepairN_BNear-end BlockN_BBENear-end Background Block ErrorN_DSNear-end Defect SecondN_EBCNear-end Errored Block CountN_ESNear-end Errored SecondN_SESNear-end Severely Errored SecondN_SESTHRNear-end Severely Errored Second THResholdN_UAT_cmdNear-end UnAvailable Time commandNCNetwork ConnectionNCMNo CRC-4 Multiframe alignment signalNDFNew Data FlagNENetwork ElementNMONNot MONitoredNNINetwork Node InterfaceNPDUNetwork Protocol Data UnitNRZNon-Return to ZeroNRZINon-Return to Zero InvertedNSAPNetwork Service Access PointSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)12NUNational Use (bits, bytes)NUxNational Use, bit rate order xOAMOperation, Administration and ManagementOFSOut of Frame SecondOOFOut Of Frame stateOSOptical SectionOSCOscillatorOSI(x)Open Systems Interconnection, Layer xOWOrder WirePProtectionP_AProtection AdaptationP_CProtection ConnectionP_TTProtection Trail TerminationP0_31c1 984 kbit/s layerP0ssynchronous 64 kbit/s layerP11x1 544 kbit/s layer (transparent)P12s2 048 kbit/s PDH path layer with synchronous 125 ms frame structure according toETS 300 167 [5]P12x2 048 kbit/s layer (transparent)P22e8 448 kbit/s PDH path layer with 4 plesiochronous 2 048 kbit/sP22x8 448 kbit/s layer (transparent)P31e34 368 kbit/s PDH path layer with 4 plesiochronous 8 448 kbit/sP31s34 368 kbit/s PDH path layer with synchronous 125 ms frame structure according toETS 300 337 [7]P31x34 368 kbit/s layer (transparent)P32x44 736 kbit/s layer (transparent)P4e139 264 kbit/s PDH path layer with 4 plesiochronous 34 368 kbit/sP4s139 264 kbit/s PDH path layer with synchronous 125 ms frame structure according toETS 300 337 [7]P4x139 264 kbit/s layer (transparent)PDCPhoto Diode CurrentPDHPlesiochronous Digital HierarchyPJEPointer Justification EventPLMPayLoad MismatchPMPerformance MonitoringPnPlesiochronous signal, Level nPOHPath OverHeadPRCPrimary Reference ClockPSProtection SwitchingPSCProtection Switch CountPSVPower Supply VoltagePTRPoinTeRPUPDH UnitQOSQuality Of ServiceRDIRemote Defect IndicatorREIRemote Error IndicatorRIRemote InformationRLTRegenerated Line TerminationRPRemote PointRSRegenerator SectionRS1STM-1 Regenerator SectionRS16STM-16 Regenerator SectionRS4STM-4 Regenerator SectionRSOHRegenerator Section OverHeadRTGRegenerator Timing GeneratorRTRReset Threshold ReportRxSLReceived Signal LabelRxTIReceived Trace identifierS11VC-11 path layerS12VC-12 path layerSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)13S2VC-2 path layerS3VC-3 path layerS4VC-4 path layerSASEStand-Alone Synchronization EquipmentSDSynchronization Distribution layer, Signal DegradeSD-22 048 kbit/s based timing source referenceSDASynchronization Distribution AdaptationSD-C2 048 kHz based timing source referenceSDHSynchronous Digital HierarchySD-NSTM-N based timing source referenceSDTSynchronization Distribution TerminationSECSDH Equipment ClockSESSeverely Errored SecondSESRSeverely Errored Seconds RatioSFSignal FailSHRSelf Healing RingSkSinkSLMSignal Label MismatchSMFSub-Multi FrameSMUXSynchronous MUltipleXerSNCSub-Network ConnectionSNC/IInherently monitored Sub-Network Connection protectionSNC/NNon-intrusively monitored Sub-Network Connection protectionSoSourceSOHSection OverHeadSPRINGShared Protection RINGSSDServer Signal DegradeSSFServer Signal FailSSMSynchronization Status MessageSSUSynchronization Supply UnitSTMSynchronous Transport ModuleSTM-NSynchronous Transport Module, level NT122 048 kHz signalTCAThreshold Crossing AlertTCFTiming Connection FunctionTCNThreshold Crossing NotificationTCPTermination Connection PointTDTransmit DegradeTFTransmit FailTFAStrail Trace identifier Frame Alignment SignalTGTiming GeneratorTITiming InformationTIMTrace Identifier MismatchTMTransmission_MediumTMNTelecommunications Management NetworkTPTiming PointTPmodeTermination Point modeTPSTransmission Protection SwitchTRThreshold ReportTSTime SlotTSDTrail Signal DegradeTSFTrail Signal FailTSLTrail Signal LabelTTTrail Termination functionTTITrail Trace IdentifierTTPTrail Termination PointTTsTrail Termination supervisory functionTUTributary UnitTUGTributary Unit GroupTUG-mTributary Unit Group, level mSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)14TU-mTributary Unit, level mTxSLTransmitted Signal LabelTxTITransmitted Trace IdentifierUASUnAvailable SecondUATUnAvailable TimeUAT_cmdUnAvailable Time commandUFUnit FailureUIUnit IntervalUNEQUnEQuippedUNIUser to Network InterfaceURLTUnRegenerated Line TerminationUSRUSeR channelsUVCUnequipped VCVCVirtual ContainerVC-nVirtual Container, level nVMRViolation Monitoring and RemovalVPVirtual PathWWorking3.3Symbols and diagrammatic conventionsThe symbols and diagrammatic conventions are described in EN 300 417-1-1 [8].3.4IntroductionThe atomic functions defining the physical interface section layers are described below. They describe the physical andlogical characteristics of the optical and electrical interfaces used in SDH equipments also with their adaptationfunctionality of PDH multiplex equipments described in the CCITT Recommendations G.751 [12] and G.742 [11] forsignal hierarchies P4, P31 and P22, and adaptation functionality for SDH over PDH specified by ETS 300 337 [7] forsignal hierarchies P4s and P31s and ETS 300 167 [5] for P12s layer signals.The physical interface layers are defined for each of the synchronous and plesiochronous rates as defined inETS 300 147 [3] and ETS 300 166 [4]. References to the signal structure are mentioned in the appropriate textsubclauses.4STM-1 Optical Section Layer FunctionsOS1-Xy.zOS1/RS1RS1_CIOS1_AIOS1_CIOS1-Xy.zOS1/RS1OS1_AIRS1_CIOS1_CIOS1OS1_CIOS1_CINOTE:Xy.z will be one value out of the set: {I1, S1.1, S1.2, L1.1, L1.2, L1.3}.Figure 1: STM-1 Optical Section atomic functionsSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)15STM-1 Optical Section Layer CPCharacteristic Information OS1_CI of the optical layer CP (see figure 2) is a digital, optical signal of defined power, bitrate, pulse width and wavelength. A range of such characteristic signals for different optical power budgets is defined inETS 300 232 [6].12345678910.2701A1A1A1A2A2A22345scrambled STM-1 bytes6789Figure 2: OS1 characteristic information OS1_CI (optical) and adapted information OS1_AI (electrical)STM-1 Optical Section Layer APThe information passing across the OS1 AP takes the form of a scrambled, digital bitstream (including a block framecharacter at 125 ms intervals) with co-directional bit timing (see figure 2). Frame characters and the synchronous,scrambling polynomial are defined in ETS 300 147 [3].4.1Optical Section Connection functionsFor further study.4.2Optical Section Trail Termination functions4.2.1Optical Section Trail Termination Source OS1-Xy.z_TT_SoNOTE 1:Xy.z will be one value out of the set: {I1, S1.1, S1.2, L1.1, L1.2, L1.3}.Symbol:OS1-Xy.zOS1_AIOS1_CIOS1_TT_So_MIX: I,S,Ly: 1z: 1,2,3Figure 3: OS1-Xy.z_TT_So symbolSIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)16Interfaces:Table 1: OS1-Xy.z_TT_So input and output signalsInput(s)Output(s)OS1_AI_DOS1_CI_DOS1_TT_So_MI_cTDOS1_TT_So_MI_cTFProcesses:This function forms the optical STM-1 signal for transmission over the optical cable as defined in ETS 300 232 [6].Optical characteristics: The function shall generate an optical STM-1 signal that meets the Xy.z characteristics definedin ETS 300 232 [6].Defects:dTD, dTF:NOTE 2:Degraded signal implies that the output although still operational has fallen below some threshold ofacceptability which requires maintenance intervention. The definition of the acceptability will in generalbe specific to a particular design or maintenance philosophy and is not defined in the present document.The defects are equipment specific.Consequent Actions:None.Defect Correlations:cTF¬dTF;cTD¬dTD and (not dTF).Performance Monitoring: None.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)174.2.2Optical Section Trail Termination Sink OS1-Xy.z_TT_SkNOTE 1:Xy.z will be one value out of the set: {I1, S1.1, S1.2, L1.1, L1.2, L1.3}.Symbol:OS1-Xy.zOS1_AIOS1_CIOS1_TT_Sk_MIX: I,S,Ly: 1z: 1,2,3Figure 4: OS1-Xy.z_TT_Sk symbolInterfaces:Table 2: OS1-Xy.z_TT_Sk input and output signalsInput(s)Output(s)OS1_CI_DOS1_TT_Sk_MI_PortModeOS1_AI_DOS1_AI_TSFOS1_TT_Sk_MI_cLOSProcesses:This function recovers the optical STM-1 signal transmitted over the optical cables. The physical characteristics of theinterface signal are defined in ETS 300 232 [6].The function shall convert the received STM-1 signal, normally complying to the Xy.z characteristics defined inETS 300 232 [6], into the internal OS1_AI signal.Port Mode:The function shall have a port mode as specified by subclause 8.5 of EN 300 417-1-1 [8].NOTE 2:The AUTO state of the port mode process is optional.Defects:The function shall detect Loss Of Signal defect (dLOS) according the optical STM-1 dLOS specification insubclause 8.2.1.6 of EN 300 417-1-1 [8].Consequent Actions:aTSF¬dLOS.Defect Correlations:cLOS¬MON and dLOS.Performance Monitoring:None.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)184.3Optical Section Adaptation functions4.3.1Optical Section to Regenerator Section Adaptation SourceOS1/RS1_A_SoSymbol:OS1/RS1RS1_CIOS1_AIFigure 5: OS1/RS1_A_So symbolInterfaces:Table 3: OS1/RS1_A_So input and output signalsInput(s)Output(s)RS1_CI_DRS1_CI_CKOS1_AI_DProcesses:None.The function shall not add any jitter.NOTE:Jitter at the NNI is the combination of the jitter generated and transferred via the client layers.Defects:None.Consequent Actions:None.Defect Correlations:None.Performance Monitoring:None.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)194.3.2Optical Section to Regenerator Section Adaptation SinkOS1/RS1_A_SkSymbol:OS1/RS1RS1_CIOS1_AIOS1/RS1_A_Sk_MIFigure 6: OS1/RS1_A_Sk symbolInterfaces:Table 4: OS1/RS1_A_Sk input and output signalsInput(s)Output(s)OS1_AI_DOS1_AI_TSFOS1/RS1_A_Sk_MI_1secondRS1_CI_DRS1_CI_CKRS1_CI_FSRS1_CI_SSFOS1/RS1_A_Sk_MI_cLOFOS1/RS1_A_Sk_MI_pOFSProcesses:This function regenerates the received signal, recovers bit timing (CK) and Frame Start reference (FS) from the receivedsignal.Regeneration: The function shall operate with a maximum BER as specified in EN 300 417-1-1 [8], subclause 11.3.2.1when any combination of the following signal conditions exist at the input:-any input optical power level within the range specified in ETS 300 232 [6];-jitter modulation applied to the input signal as specified in EN 300 417-1-1 [8], subclause 11.3.2.1;-the input signal bit rate has any value in the range 155 520 kbit/s ± 20 ppm.NOTE:The frequency and jitter / wander tolerance might be further constrained by the requirements of the clientlayers.To ensure adequate immunity against the presence of Consecutive Identical Digits (CID) in the STM-1 signal, thefunction shall comply with the specification in ITU-T Recommendation G.958 [16], section 7.4.The function shall process the signal such that in the absence of input jitter, the intrinsic jitter at the STM-1 outputinterface (in a regenerative repeater) shall not exceed:-0,5 UI peak-to-peak when measured through a bandpass filter with corner frequencies at 500 Hz and 1,3 MHzand low pass roll off of 60 dB / decade and high pass roll off of 20 dB / decade;-0,1 UI peak-to-peak when measured through a bandpass filter with corner frequencies at 65 kHz and 1,3 MHzand low pass roll off of 60 dB / decade and high pass roll off of 20 dB / decade.The function shall process the signal such that the jitter transfer (measured between an STM-1 input and STM-1 outputin a regenerative repeater) shall be as specified in ITU-T Recommendation G.958 [16], subclause 9.3.2, Type A.SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)20Frame alignment: The frame alignment shall be found by searching for the A1, A2 bytes contained in the STM-1 signal.The framing pattern searched for may be a subset of the A1 and A2 bytes contained on the STM-1 signal. The framesignal shall be continuously checked with the presumed frame start position for the alignment. If in the In-Frame state(IF), the maximum Out-Of-Frame (OOF) detection time shall be 625 µs for a random unframed signal. The algorithmused to check the alignment shall be such that, under normal conditions, a 10-3 (Poisson type) error ratio will not cause afalse OOF more then once per 6 minutes. If in the OOF state, the maximum frame alignment time shall be 250 µs for anerror-free signal with no emulated framing patterns. The algorithm used to recover from the OOF state shall be such,that the probability for false frame recovery with a random unframed signal shall be no more than 10-5 per 250 µs timeinterval.In Frame(IF)Out Of Frame(OOF)max 5 Errored FASs2 Error Free FASsFigure 7: Frame alignment processThe frame start signal (RS1_CI_FS) shall be maintained during the OOF state and only updated upon successfultransition form OOF to the IF state.Defects:If the OOF anomaly persists for 3 ms, a STM-1 Loss Of Frame defect (dLOF) shall be detected. To provide for the caseof intermittent OOFs, the integrating timer shall not be reset to zero until an IF condition persists continuously for 3 ms.The dLOF defect shall be cleared when the IF state persists continuously for 3 ms.Loss Of FrameCleared(dLOF=false)Loss Of FrameSet(dLOF=true)Out Of Frame for >3msIn Frame for >3msNOTE:Out-Of-Frame integrating timer is not reset to zero until an In-Frame condition persists continuously for3 ms.Figure 8: Loss of frame processConsequent Actions:aAIS¬dLOF or AI_TSF;aSSF¬dLOF or AI_TSF.On declaration of an aAIS the function shall output an all-ONEs (AIS) signal - complying to the frequency limits for thisinterface - within 250 µs; on clearing of aAIS the function shall output normal data within 250 µs.Defect Correlations:cLOF¬dLOF and (not AI_TSF).Performance Monitoring:Any second with at least one OOF event shall be reported as an pOFS (Out of Frame Second).SIST EN 300 417-2-1 V1.1.3:2003

ETSIEN 300 417-2-1 V1.1.3 (1999-05)215STM-4 Optical S
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