SIST EN 300 417-3-1 V1.1.3:2003

• Abstract:

  Functional requirements for the regenerator section and multiplex sec tion layer of SDH interfaces on all types of equipment based on the ge neric principles described in part 1-1.

• 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 300 417-3-1 V1.1.3 (1999-05) - Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 3-1: Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions

SIST EN 300 417-3-1 V1.1.3:2003 is the Slovenian adoption of EN 300 417-3-1 Version 1.1.3 from ETSI, for Transmission and Multiplexing equipment. It specifies STM-N regenerator and multiplex section layer functions for Synchronous Digital Hierarchy (SDH) equipment, so designers, integrators, test teams and operators can describe and verify the transport functions of an interface in a common way.

What does SIST EN 300 417-3-1 V1.1.3:2003 specify?

SIST EN 300 417-3-1 V1.1.3:2003 specifies a library of basic building blocks and rules for combining them to describe transport functionality. In practice, it tells you how SDH equipment can be modelled as an interconnection of defined functional blocks that obey the combination rules.

The scope is limited to the regenerator section and multiplex section layer of SDH interfaces on all types of equipment based on the generic principles in EN 300 417-1-1. The document is organized as front matter, definitions and abbreviations, STM-1, STM-4, STM-16 and STM-64 layer function clauses, plus normative and informative annexes.

Annex	What it covers
Annex A	Generic specification of linear protection switching operation
Annex B	STM-16 regenerator functional model, example
Annex C	AU-4-Xc numbering scheme and pointer allocation
Annex D	MS protection examples

What are the key requirements of SIST EN 300 417-3-1 V1.1.3:2003?

The document’s main technical content is a set of atomic functions for section-layer behaviour. These functions matter because they define what an equipment block must insert, extract, monitor or pass through at the SDH access point.

Section framing, trace and parity

For STM-1 and STM-4 regenerator sections, the trail termination source functions build the section signal by adding frame alignment bytes A1/A2, inserting the trace identifier in J0, and calculating B1 with Bit Interleaved Parity 8 (BIP-8). The scrambler is defined with polynomial 1 + X6 + X7. In practice, this fixes how a transmitter formats the section overhead and how the receiver verifies it.

The corresponding sink functions descramble the incoming signal, recover the trace identifier, and compare the received B1 against the calculated value. They detect dTIM and can declare AIS output within the stated reaction time. For a reader, this means the equipment has to support trace checking, error detection and defined fail-safe output behavior.

Multiplex section monitoring and maintenance

For STM-1 and STM-4 multiplex sections, the trail termination source inserts error-monitoring and remote maintenance information into the MS overhead. The B2 bytes carry BIP-24 for STM-1 and BIP-96 for STM-4, while M1 carries REI and K2 carries RDI and AIS-related status. This matters because it defines how one end reports the error condition of the other direction of transmission.

The sink functions monitor B2, M1 and K2, detect dAIS, dDEG and dRDI, and apply consequent actions such as AIS output and status reporting. The document also defines performance monitoring counters for error blocks and signal defects. In practice, these functions are what operators use for maintenance and fault localization.

Adaptation of DCC, P0s and V0x

The adaptation functions map DCC, P0s and V0x signals into the section overhead. DCC uses D1-D3 in STM-1 and D1-D3 in STM-4, while P0s and V0x use E1, E2 or F1 depending on the layer and function. The P0s adaptation source and sink use slip buffering or data latching and smoothing to handle 64 kbit/s signals and wander.

That means the document tells implementers how to carry management and orderwire/user-channel traffic alongside the transport signal without breaking the timing rules.

VC-4 adaptation and pointer handling

The multiplex section adaptation functions for S4 and S4-4c describe frequency justification and bitrate adaptation for VC-4 and VC-4-4c payloads. They use AU-4 pointer generation and interpretation, fixed stuff bytes, and count pointer increments and decrements as performance events. This is the practical rule set for carrying payloads with slightly different timing through STM-N frames.

Linear trail protection

Clause 5.5 and clause 7.5 define linear trail protection functions, including 1+1 and 1:n protection. They use APS signalling, switching types, operation types, WTR time, and defined switching-time behavior. Annex A gives the generic protection switching process, including commands, states and APS signal fields, so protection implementations can be aligned across equipment.

What terms does SIST EN 300 417-3-1 V1.1.3:2003 define?

• AI - Adapted Information: The information combination that a layer presents at its access point after lower-layer adaptation.
• CI - Characteristic Information: The information stream associated with a layer at a connection point or access point.
• DCC - Data Communications Channel: The management communications channel carried in section overhead.
• APS - Automatic Protection Switch: The signalling and switching mechanism used for protection operation.
• BIP - Bit Interleaved Parity: The parity method used for section error monitoring such as B1, B2 and related counters.
• RS - Regenerator Section: The SDH section layer between regenerators, used here for STM-1, STM-4, STM-16 and STM-64.
• MS - Multiplex Section: The SDH section layer that carries payload and multiplex section overhead.
• STM-N - Synchronous Transport Module, level N: The SDH frame family covered by this document.

Who uses SIST EN 300 417-3-1 V1.1.3:2003?

SIST EN 300 417-3-1 V1.1.3:2003 is used by SDH equipment manufacturers, network designers, test laboratories, quality teams and operators. It helps them specify interface behaviour, check interoperability, verify fault handling, and confirm protection and maintenance functions in transport equipment.

The foreword says the family of documents supports inter-vendor and inter-operator compatibility. That makes the standard relevant when equipment from different suppliers has to work together on the same SDH network.

What changed in SIST EN 300 417-3-1 V1.1.3:2003 from the previous edition?

This version was published because the previous version had incorrect dates in the transposition table. The foreword also states that the EN series was converted from ETS 300 417 without technical changes, with editorial changes where needed.

Which standards are used with SIST EN 300 417-3-1 V1.1.3:2003?

• ETS 300 147 - Defines the SDH multiplexing structure and the byte locations used throughout the section-layer functions.
• ETS 300 166 - Defines the 64 kbit/s hierarchical digital interface used for P0s and V0x adaptation.
• EN 300 417-1-1 - Provides the generic processes, performance rules, trace identifier handling, pointer generation and defect definitions used throughout this part.
• EN 300 417-4-1 - Provides the SDH path layer functions referenced for VC-4 and VC-4-4c pointer-related behaviour.
• EN 300 417-6-1 - Provides synchronization distribution layer functions used for SD and clock-related adaptation.
• ETS 300 746 - Defines APS protocols and operation used with protection switching.
• ITU-T G.783 - Gives characteristics of SDH equipment functional blocks, aligned with the functions in this document.

What does the SIST EN 300 417-3-1 V1.1.3:2003 document contain?

The document contains functional block diagrams, signal-format figures, interface tables, process descriptions, defect handling, consequent actions and performance monitoring notes for each atomic function. It also includes protection-switching procedures in Annex A, an STM-16 functional example in Annex B, pointer numbering guidance in Annex C, and MS protection examples in Annex D.

For implementation work, the most useful parts are the per-function tables showing inputs and outputs, and the clauses that explain how each block processes framing, trace, parity, pointers and overhead bytes. For test and verification work, the defect, consequent action and performance-monitoring statements are the parts that translate most directly into checks on real equipment.

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 3-1: Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 300 417-3-1 Version 1.1.3SIST EN 300 417-3-1 V1.1.3:2003en01-december-2003SIST EN 300 417-3-1 V1.1.3:2003SLOVENSKI
STANDARD
EN 300 417-3-1 V1.1.3 (1999-05)European Standard (Telecommunications series)Transmission and Multiplexing (TM);Generic requirements of transport functionality of equipment;Part 3-1: Synchronous Transport Module-N (STM-N)regenerator and multiplex section layer functionsSIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)2ReferenceREN/TM-01015-3-1a (3v0r9ie0.PDF)Keywordstransmission, SDH, interfaceETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail]://www.etsi.orgCopyright 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 1998.All rights reserved.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)3ContentsIntellectual Property Rights.7Foreword.71Scope.92References.93Definitions, abbreviations and symbols.103.1Definitions.103.2Abbreviations.103.3Symbols and Diagrammatic Conventions.123.4Introduction.124STM-1 Regenerator Section Layer Functions.134.1STM-1 Regenerator Section Connection functions.144.2STM-1 Regenerator Section Trail Termination functions.144.2.1STM-1 Regenerator Section Trail Termination Source RS1_TT_So.144.2.2STM-1 Regenerator Section Trail Termination Sink RS1_TT_Sk.164.3STM-1 Regenerator Section Adaptation functions.184.3.1STM-1 Regenerator Section to Multiplex Section Adaptation Source RS1/MS1_A_So.184.3.2STM-1 Regenerator Section to Multiplex Section Adaptation Sink RS1/MS1_A_Sk.194.3.3STM-1 Regenerator Section to DCC Adaptation Source RS1/DCC_A_So.204.3.4STM-1 Regenerator Section to DCC Adaptation Sink RS1/DCC_A_Sk.214.3.5STM-1 Regenerator Section to P0s Adaptation Source RS1/P0s_A_So/N.224.3.6STM-1 Regenerator Section to P0s Adaptation Sink RS1/P0s_A_Sk/N.234.3.7STM-1 Regenerator Section toV0x Adaptation Source RS1/V0x_A_So.244.3.8STM-1 Regenerator Section to V0x Adaptation Sink RS1/V0x_A_Sk.255STM-1 Multiplex Section Layer Functions.265.1STM-1 Multiplex Section Connection functions.285.2STM-1 Multiplex Section Trail Termination functions.285.2.1STM-1 Multiplex Section Trail Termination Source MS1_TT_So.285.2.2STM-1 Multiplex Section Trail Termination Sink MS1_TT_Sk.295.3STM-1 Multiplex Section Adaptation functions.325.3.1STM-1 Multiplex Section to S4 Layer Adaptation Source MS1/S4_A_So.325.3.2STM-1 Multiplex Section to S4 Layer Adaptation Sink MS1/S4_A_Sk.355.3.3STM-1 Multiplex Section to DCC Adaptation Source MS1/DCC_A_So.375.3.4STM-1 Multiplex Section to DCC Adaptation Sink MS1/DCC_A_Sk.375.3.5STM-1 Multiplex Section to P0s Adaptation Source MS1/P0s_A_So.385.3.6STM-1 Multiplex Section to P0s Adaptation Sink MS1/P0s_A_Sk.405.3.7STM-1 Multiplex Section to Synchronization Distribution Adaptation Source MS1/SD_A_So.415.3.8STM-1 Multiplex Section to Synchronization Distribution Adaptation Sink MS1/SD_A_Sk.415.3.9STM-1 Multiplex Section Layer Clock Adaptation Source MS1-LC_A_So.415.4STM-1 Multiplex Section Layer Monitoring Functions.415.5STM-1 Multiplex Section Linear Trail Protection Functions.415.5.1STM-1 Multiplex Section Linear Trail Protection Connection Functions.415.5.1.1STM-1 Multiplex Section 1+1 Linear Trail Protection Connection MS1P1+1_C.415.5.1.2STM-1 Multiplex Section 1:n Linear Trail Protection Connection MS1P1:n_C.445.5.2STM-1 Multiplex Section Linear Trail Protection Trail Termination Functions.465.5.2.1Multiplex Section Protection Trail Termination Source MS1P_TT_So.465.5.2.2Multiplex Section Protection Trail Termination Sink MS1P_TT_Sk.475.5.3STM-1 Multiplex Section Linear Trail Protection Adaptation Functions.485.5.3.1STM-1 Multiplex Section to STM-1 Multiplex Section Protection Layer Adaptation SourceMS1/MS1P_A_So.485.5.3.2STM-1 Multiplex Section to STM-1 Multiplex Section Protection Layer Adaptation SinkMS1/MS1P_A_Sk.49SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)46STM-4 Regenerator Section Layer Functions.506.1STM-4 Regenerator Section Connection functions.516.2STM-4 Regenerator Section Trail Termination functions.516.2.1STM-4 Regenerator Section Trail Termination Source RS4_TT_So.516.2.2STM-4 Regenerator Section Trail Termination Sink RS4_TT_Sk.546.3STM-4 Regenerator Section Adaptation functions.566.3.1STM-4 Regenerator Section to Multiplex Section Adaptation Source RS4/MS4_A_So.566.3.2STM-4 Regenerator Section to Multiplex Section Adaptation Sink RS4/MS4_A_Sk.576.3.3STM-4 Regenerator Section to DCC Adaptation Source RS4/DCC_A_So.586.3.4STM-4 Regenerator Section to DCC Adaptation Sink RS4/DCC_A_Sk.596.3.5STM-4 Regenerator Section to P0s Adaptation Source RS4/P0s_A_So/N.606.3.6STM-4 Regenerator Section to P0s Adaptation Sink RS4/P0s_A_Sk/N.616.3.7STM-4 Regenerator Section to V0x Adaptation Source RS4/V0x_A_So.626.3.8STM-4 Regenerator Section to V0x Adaptation Sink RS4/V0x_A_Sk.637STM-4 Multiplex Section Layer Functions.647.1STM-4 Multiplex Section Connection functions.667.2STM-4 Multiplex Section Trail Termination functions.677.2.1STM-4 Multiplex Section Trail Termination Source MS4_TT_So.677.2.2STM-4 Multiplex Section Trail Termination Sink MS4_TT_Sk.697.3STM-4 Multiplex Section Adaptation functions.727.3.1STM-4 Multiplex Section to S4 Layer Adaptation Source MS4/S4_A_So/N.727.3.2STM-4 Multiplex Section to S4 Layer Adaptation Sink MS4/S4_A_Sk/N.757.3.3STM-4 Multiplex Section to S4-4c Layer Adaptation Source MS4/S4-4c_A_So.777.3.4STM-4 Multiplex Section to S4-4c Layer Adaptation Sink MS4/S4-4c_A_Sk.807.3.5STM-4 Multiplex Section to DCC Adaptation Source MS4/DCC_A_So.827.3.6STM-4 Multiplex Section to DCC Adaptation Sink MS4/DCC_A_Sk.837.3.7STM-4 Multiplex Section to P0s Adaptation Source MS4/P0s_A_So.847.3.8STM-4 Multiplex Section to P0s Adaptation Sink MS4/P0s_A_Sk.857.3.9STM-4 Multiplex Section to Synchronization Distribution Adaptation Source MS4/SD_A_So.867.3.10STM-4 Multiplex Section to Synchronization Distribution Adaptation Sink MS4/SD_A_Sk.867.3.11STM-4 Multiplex Section Layer Clock Adaptation Source MS4-LC_A_So.867.4STM-4 Multiplex Section Layer Monitoring Functions.867.5STM-4 Multiplex Section Linear Trail Protection Functions.867.5.1STM-4 Multiplex Section Linear Trail Protection Connection Functions.867.5.1.1STM-4 Multiplex Section 1+1 Linear Trail Protection Connection MS4P1+1_C.867.5.1.2STM-4 Multiplex Section 1:n Linear Trail Protection Connection MS4P1:n_C.897.5.2STM-4 Multiplex Section Linear Trail Protection Trail Termination Functions.917.5.2.1Multiplex Section Protection Trail Termination Source MS4P_TT_So.917.5.2.2Multiplex Section Protection Trail Termination Sink MS4P_TT_Sk.927.5.3STM-4 Multiplex Section Linear Trail Protection Adaptation Functions.937.5.3.1STM-4 Multiplex Section to STM-4 Multiplex Section Protection Layer Adaptation SourceMS4/MS4P_A_So.937.5.3.2STM-4 Multiplex Section to STM-4 Multiplex Section Protection Layer Adaptation SinkMS4/MS4P_A_Sk.948STM-16 Regenerator Section Layer Functions.958.1STM-16 Regenerator Section Connection functions.968.2STM-16 Regenerator Section Trail Termination functions.968.2.1STM-16 Regenerator Section Trail Termination Source RS16_TT_So.968.2.2STM-16 Regenerator Section Trail Termination Sink RS16_TT_Sk.998.3STM-16 Regenerator Section Adaptation functions.1018.3.1STM-16 Regenerator Section to Multiplex Section Adaptation Source RS16/MS16_A_So.1018.3.2STM-16 Regenerator Section to Multiplex Section Adaptation Sink RS16/MS16_A_Sk.1028.3.3STM-16 Regenerator Section to DCC Adaptation Source RS16/DCC_A_So.1038.3.4STM-16 Regenerator Section to DCC Adaptation Sink RS16/DCC_A_Sk.1048.3.5STM-16 Regenerator Section to P0s Adaptation Source RS16/P0s_A_So/N.1058.3.6STM-16 Regenerator Section to P0s Adaptation Sink RS16/P0s_A_Sk/N.1068.3.7STM-16 Regenerator Section to V0x Adaptation Source RS16/V0x_A_So.1078.3.8STM-16 Regenerator Section to V0x Adaptation Sink RS16/V0x_A_Sk.108SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)59STM-16 Multiplex Section Layer Functions.1099.1STM-16 Multiplex Section Connection functions.1149.2STM-16 Multiplex Section Trail Termination functions.1149.2.1STM-16 Multiplex Section Trail Termination Source MS16_TT_So.1149.2.2STM-16 Multiplex Section Trail Termination Sink MS16_TT_Sk.1169.3STM-16 Multiplex Section Adaptation functions.1189.3.1STM-16 Multiplex Section to S4 Layer Adaptation Source MS16/S4_A_So/N.1189.3.2STM-16 Multiplex Section to S4 Layer Adaptation Sink MS16/S4_A_Sk/N.1219.3.3STM-16 Multiplex Section to S4-4c Layer Adaptation Source MS16/S4-4c_A_So/N.1239.3.4STM-16 Multiplex Section to S4-4c Layer Adaptation Sink MS16/S4-4c_A_Sk/N.1269.3.5STM-16 Multiplex Section to DCC Adaptation Source MS16/DCC_A_So.1289.3.6STM-16 Multiplex Section to DCC Adaptation Sink MS16/DCC_A_Sk.1299.3.7STM-16 Multiplex Section to P0s Adaptation Source MS16/P0s_A_So.1309.3.8STM-16 Multiplex Section to P0s Adaptation Sink MS16/P0s_A_Sk.1319.3.9STM-16 Multiplex Section to Synchronization Distribution Adaptation Source MS16/SD_A_So.1329.3.10STM-16 Multiplex Section to Synchronization Distribution Adaptation Sink MS16/SD_A_Sk.1329.3.11STM-16 Multiplex Section Layer Clock Adaptation Source MS16-LC_A_So.1329.4STM-16 Multiplex Section Layer Monitoring Functions.1329.5STM-16 Multiplex Section Linear Trail Protection Functions.1329.5.1STM-16 Multiplex Section Linear Trail Protection Connection Functions.1329.5.1.1STM-16 Multiplex Section 1+1 Linear Trail Protection Connection MS16P1+1_C.1329.5.1.2STM-16 Multiplex Section 1:n Linear Trail Protection Connection MS16P1:n_C.1359.5.2STM-16 Multiplex Section Linear Trail Protection Trail Termination Functions.1379.5.2.1Multiplex Section Protection Trail Termination Source MS16P_TT_So.1379.5.2.2Multiplex Section Protection Trail Termination Sink MS16P_TT_Sk.1389.5.3STM-16 Multiplex Section Linear Trail Protection Adaptation Functions.1399.5.3.1STM-16 Multiplex Section to STM-16 Multiplex Section Protection Layer Adaptation SourceMS16/MS16P_A_So.1399.5.3.2STM-16 Multiplex Section to STM-16 Multiplex Section Protection Layer Adaptation SinkMS16/MS16P_A_Sk.1409.6STM-16 Multiplex Section 2 Fibre Shared Protection Ring Functions.1419.6.1STM-16 Multiplex Section 2 Fibre Shared Protection Ring Connection MS16P2fsh_C.1419.6.2STM-16 Multiplex Section 2 Fibre Shared Protection Ring Trail Termination Functions.1459.6.2.1STM-16 Multiplex Section 2 Fibre Shared Protection Ring Trail Termination SourceMS16P2fsh_TT_So.1459.6.2.2STM-16 Multiplex Section 2 Fibre Shared Protection Ring Trail Termination SinkMS16P2fsh_TT_Sk.1469.6.3STM-16 Multiplex Section 2 Fibre Shared Protection Ring Adaptation Functions.1479.6.3.1STM-16 Multiplex Section to STM-16 Multiplex Section 2 Fibre Shared Protection RingAdaptation Source MS16/MS16P2fsh_A_So.1479.6.3.2STM-16 Multiplex Section to STM-16 Multiplex Section 2 Fibre Shared Protection RingAdaptation Sink MS16/MS16P2fsh_A_Sk.1489.7STM-16 Multiplex Section 4 Fibre Shared Protection Ring Functions.1499.7.1STM-16 Multiplex Section 4 Fibre Shared Protection Ring Connection MS16P4fsh_C.1499.7.2STM-16 Multiplex Section 4 Fibre Shared Protection Ring Trail Termination Functions.1499.7.2.1STM-16 Multiplex Section 4 Fibre Shared Protection Ring Trail Termination SourceMS16P4fsh_TT_So.1499.7.2.2STM-16 Multiplex Section 4 Fibre Shared Protection Ring Trail Termination SinkMS16P4fsh_TT_Sk.1499.7.3STM-16 Multiplex Section 4 Fibre Shared Protection Ring Adaptation Functions.1499.7.3.1STM-16 Multiplex Section to STM-16 Multiplex Section 4 Fibre Shared Protection RingAdaptation Source MS16/MS16P4fsh_A_So.1499.7.3.2STM-16 Multiplex Section to STM-16 Multiplex Section 4 Fibre Shared Protection RingAdaptation Sink MS16/MS16P4fsh_A_Sk.149SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)610STM-64 Regenerator Section layer functions.14911STM-64 Multiplex Section layer functions.149Annex A (normative):Generic specification of linear protection switching operation.150A.1Protection process overview.151A.2External switch commands definition.152A.3Conditions of working and protection trail / connections.153A.4States within protection process.153A.5Numbering of working, protection, normal, extra traffic, null signals.154A.6Priority of request types (conditions, external commands, states).155A.7APS signal definition.156A.7.1APS signal fields.156A.7.2STM-N MS-APS.157A.7.3STM-N VC-APS.158A.8Switch performance: switching and holdoff times.158A.9Subprocesses.158Annex B (informative):STM-16 regenerator functional model (example).166Annex C (informative):AU-4-Xc numbering scheme & pointer allocation.167Annex D (informative):MS protection examples.171Bibliography.173History.174SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)7Intellectual 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 3-1 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) physical sectionlayer 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 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)8They 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 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)91ScopeThe 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 EN 300 417-1-1 [3].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]ETS 300 147: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH);Multiplexing structure".[2]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".[3]EN 300 417-1-1: "Transmission and Multiplexing (TM); Generic requirements of transportfunctionality of equipment; Part 1-1: Generic processes and performance".[4]EN 300 417-4-1: "Transmission and Multiplexing (TM); Generic requirements of transportfunctionality of equipment; Part 4-1: Synchronous Digital Hierarchy (SDH) path layer functions".[5]EN 300 417–6–1: "Transmission and Multiplexing (TM); Generic requirements of transportfunctionality of equipment; Part 6-1: Synchronization distribution layer functions".[6]ETS 300 746: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH);Network protection schemes; Automatic Protection Switch (APS) protocols and operation".[7]ITU-T Recommendation G.783: "Characteristics of synchronous digital hierarchy (SDH)equipment functional blocks".SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)103Definitions, abbreviations and symbols3.1DefinitionsThe functional definitions are described in EN 300 417-1-1 [3].3.2AbbreviationsFor the purposes of the present document, the following abbreviations apply:AAdaptation functionAcTIAccepted Trace IdentifierADMAdd-Drop MultiplexerAIAdapted InformationAISAlarm Indication SignalAPAccess PointAPIdAccess Point IdentifierAPSAutomatic Protection SwitchAUAdministrative UnitAUGAdministrative Unit GroupAU-nAdministrative Unit, level nBERBit Error RatioBIPBit Interleaved ParityBIP-NBit Interleaved Parity, width NCConnection functionCICharacteristic InformationCKClocKCMConnection MatrixCPConnection PointCSClock SourceDDataDCC Data Communications ChannelDECDECrementDEGDEGradedDEGTHRDEGraded THResholdEBCErrored Block CountECCEmbedded Communications ChannelECC(x)Embedded Communications Channel, layer xEDCError Detection CodeEDCVError Detection Code ViolationEMFEquipment Management FunctionEQEQuipmentESElectrical SectionESErrored SecondExTIExpected Trace IdentifierF_BFar-end BlockFASFrame Alignment SignalFOPFailure Of ProtocolFSFrame Start signalHOHigher OrderHOVCHigher Order Virtual ContainerHPHigher order PathIDIDentifierIFIn Frame stateINCINCrementINVINValidLCLink ConnectionLOLower OrderSIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)11LOALoss Of Alignment; generic for LOF, LOM, LOPLOFLoss Of FrameLOPLoss Of PointerLOSLoss Of SignalLOVCLower Order Virtual ContainerMCMatrix 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 GroupNCNot ConnectedN_BNear-end BlockNCNetwork ConnectionNDFNew Data FlagNENetwork ElementNMONNot MONitoredNNINetwork Node InterfaceNUNational Use (bits, bytes)NUxNational Use, bit rate order xOAMOperation, Administration and MaintenanceOFSOut of Frame SecondOOFOut Of Frame stateOSOptical SectionOSI(x)Open Systems Interconnection, layer xOWOrder WirePProtectionP_AProtection AdaptationP_CProtection ConnectionP_TTProtection Trail TerminationPDHPlesiochronous Digital HierarchyPJEPointer Justification EventPMPerformance MonitoringPnPlesiochronous signal, level nPOHPath OverHeadPRCPrimary Reference ClockPSProtection SwitchingPSCProtection Switch CountPTRPoinTeRQOSQuality Of ServiceRDIRemote Defect IndicationREIRemote Error IndicationRIRemote InformationRPRemote PointRSRegenerator SectionRS1STM-1 Regenerator SectionRS16STM-16 Regenerator SectionRS4STM-4 Regenerator SectionRSOHRegenerator Section OverHeadRxTIReceived Trace IdentifierSIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)12S4VC-4 path layerSASEStand-Alone Synchronization EquipmentSDSynchronization Distribution layer, Signal DegradeSDHSynchronous Digital HierarchySECSDH Equipment ClockSFSignal FailSkSinkSNCSub-Network ConnectionSNC/IInherently monitored Sub-Network Connection protectionSNC/NNon-intrusively monitored Sub-Network Connection protectionSNC/SSublayer monitored Sub-Network Connection protectionSoSourceSOHSection OverHeadSPRINGShared Protection RINGSRSelected ReferenceSSDServer Signal DegradeSSFServer Signal FailSSMSynchronization Status MessageSSUSynchronization Supply UnitSTMSynchronous Transport ModuleSTM-NSynchronous Transport Module, level NTCPTermination Connection PointTITiming InformationTIMTrace Identifier MismatchTMTransmission_MediumTMNTelecommunications Management NetworkTPTiming PointTPmodeTermination Point modeTSTime SlotTSDTrail Signal DegradeTSFTrail Signal FailTTTrail Termination functionTTITrail Trace IdentifierTTsTrail Termination supervisory functionTxTITransmitted Trace IdentifierUNEQUNEQuippedUNIUser Network InterfaceUSRUSeR channelsV064 kbit/s contradirectional data layerVCVirtual ContainerVC-nVirtual Container, level-nWWorking3.3Symbols and Diagrammatic ConventionsThe symbols and diagrammatic conventions are described in EN 300 417-1-1 [3].3.4IntroductionThe atomic functions defining the regenerator and multiplex section layers are described below (clause 4 onwards).SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)134STM-1 Regenerator Section Layer FunctionsRS1RS1/MS1RS1RS1/MS1MS1_CIMS1_CIRS1_CIRS1_CIRS1/V0xRS1/V0xRS1/P0s-NP0s_CISTM1_TIRS1/P0s-NP0s_CIE1,F1E1,F1V0x_CIV0x_CIRS1/DCCDCC_CIF1D1-D3RS1/DCCDCC_CID1-D3F1RS1_AIRS1_AIRS1Figure 1: STM-1 Regenerator Section atomic functionsRS1 Layer CPThe CI at this point is an octet structured, 125 ms framed data stream with co-directional timing. It is the entire STM-1signal as defined in ETS 300 147 [1]. Figure 2 depicts only bytes handled in the RS1 layer.NOTE 1:The unmarked bytes [2, 6], [3, 6], [3, 8], [3, 9] in rows 2,3 (figure 2) are reserved for future internationalstandardization. Currently, they are undefined.NOTE 2:The unmarked bytes [2, 2], [2, 3], [2, 5], [3, 2], [3, 3], [3, 5] in rows 2,3 (figure 2) are reserved for mediaspecific usage (e.g. radio sections). In optical and electrical section applications they are undefined.NOTE 3:The bytes for National Use (NU) in rows 1,2 (figure 2) are reserved for operator specific usage. Theirprocessing is not within the province of the present document. If NU bytes [1, 8] and [1, 9] are unused,care should be taken in selecting the binary content of the bytes which are excluded from the scramblingprocess of the STM-N signal to ensure that long sequences of "1"s or "0"s do not occur.12345678910.2701A1A1A1A2A2A2J0NUNU2B1E1F1NUNU3D1D2D3456MS1_CI789Figure 2: RS1_CI_D signalRS1 Layer APThe AI at this point is octet structured and 125 ms framed with co-directional timing and represents the combination ofadapted information from the MS1 layer (2 403 bytes per frame), the management communication DCC layer (3 bytesper frame if supported), the OW layer (1 byte per frame if supported) and the user channel F1 (1 byte per frame ifsupported). The location of these four components in the frame is defined in ETS 300 147 [1] and depicted in figure 3.NOTE 4:Bytes E1, F1 and D1-D3 will be undefined when the adaptation functions sourcing these bytes are notpresent in the network element.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)1412345678910.2701NUNU2E1F1NUNU3D1D2D3456MS1_CI789Figure 3: RS1_AI_D signal4.1STM-1 Regenerator Section Connection functionsFor further study.4.2STM-1 Regenerator Section Trail Termination functions4.2.1STM-1 Regenerator Section Trail Termination Source RS1_TT_SoSymbol:RS1RS1_AIRS1_CIRS1_TT_So_MIFigure 4: RS1_TT_So symbolInterfaces:Table 1: RS1_TT_So input and output signalsInput(s)Output(s)RS1_AI_DRS1_AI_CKRS1_AI_FSRS1_TT_So_MI_TxTIRS1_CI_DRS1_CI_CKProcesses:The function builds the STM-1 signal by adding the frame alignment information, bytes A1A2, the STM Section TraceIdentifier (STI) byte J0, computing the parity and inserting the B1 byte.J0: In this byte the function shall insert the Transmitted Trail Trace Identifier TxTI. Its format is described inEN 300 417-1-1 [3], subclause 7.1.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)15B1: The function shall calculate a Bit Interleaved Parity 8 (BIP-8) code using even parity. The BIP-8 shall be calculatedover all bits of the previous STM-1 frame after scrambling and is placed in byte position B1 of the current STM-1 framebefore scrambling (figure 5).A1A2: The function shall insert the STM-1 frame alignment signal A1A1A1A2A2A2 into the regenerator sectionoverhead as defined in ETS 300 147 [1].Scrambler: This function provides scrambling of the RS1_CI. The operation of the scrambler shall be functionallyidentical to that of a frame synchronous scrambler of sequence length 127 operating at the line rate. The generatingpolynomial shall be 1 + X6 + X7. The scrambler shall be reset to "1111 1111" on the most significant bit (MSB) of thebyte [1, 10] following the last byte of the STM-1 SOH in the first row. This bit and all subsequent bits to be scrambledshall be modulo 2 added to the output of the X7 position of the scrambler. The scrambler shall run continuouslythroughout the remaining STM-1 frame.SCRAMBLERBIP-8COMPUTATIONB1RS_CIRS TRACE IDINSERTIONJ0FAS INSERTIONRS_AIA1A2TxTIFigure 5: Some processes within RS1_TT_SoDefects:None.Consequent Actions:None.Defect Correlations:None.Performance Monitoring:None.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)164.2.2STM-1 Regenerator Section Trail Termination Sink RS1_TT_SkSymbol:RS1RS1_AIRS1_CIRS1_TT_Sk_MIFigure 6: RS1_TT_Sk symbolInterfaces:Table 2: RS1_TT_Sk input and output signalsInput(s)Output(s)RS1_CI_DRS1_CI_CKRS1_CI_FSRS1_CI_SSFRS1_TT_Sk_MI_ExTIRS1_TT_Sk_MI_TPmodeRS1_TT_Sk_MI_TIMdisRS1_TT_Sk_MI_ExTImodeRS1_TT_Sk_MI_1secondRS1_AI_DRS1_AI_CKRS1_AI_FSRS1_AI_TSFRS1_TT_Sk_MI_AcTIRS1_TT_Sk_MI_cTIMRS1_TT_Sk_MI_pN_EBCRS1_TT_Sk_MI_pN_DSProcesses:This function monitors the STM-1 signal for RS errors, and recovers the RS trail termination status. It extracts thepayload independent overhead bytes (J0, B1) from the RS1 layer Characteristic Information:Descrambling: The function shall descramble the incoming STM-1 signal. The operation of the descrambler shall befunctionally identical to that of a scrambler in OS1/RS1_A_So.B1: Even bit parity is computed for each bit n of every byte of the preceding scrambled STM-1 frame and comparedwith bit n of B1 recovered from the current frame (n = 1 to 8 inclusive) (figure 7). A difference between the computedand recovered B1 values is taken as evidence of one or more errors (nN_B) in the computation block.J0: The Received Trail Trace Identifier RxTI shall be recovered from the J0 byte and shall be made available as AcTIfor network management purposes. The application and acceptance and mismatch detection process shall be performedas specified in EN 300 417-1-1 [3], subclauses 7.1 and 8.2.1.3.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)17DESCRAMBLERBIP-8COMPUTATIONB1J0RS1_CICOMPARISONBIP-8violationsAcTIdTIMExTIRS1_AITIMdisRS TRACE IDPROCESSExTImodeFigure 7: Some processes within RS1_TT_SkDefects:The function shall detect for dTIM defect according the specification in EN 300 417-1-1 [3], subclause 8.2.1.Consequent Actions:aAIS¬CI_SSF or dTIM.aTSF¬CI_SSF or dTIM.On declaration of aAIS the function shall output an all-ONEs (AIS) signal within 250 ms; on clearing of aAIS thefunction shall output normal data within 250 ms.NOTE 1:The term "CI_SSF" has been added to the conditions for aAIS while the descrambler function has beenmoved from the e.g. OS1/RS1_A_Sk to this function. Consequently, an all-ONEs (AIS) pattern inserted inthe mentioned adaptation function would be descrambled in this function. A "refreshment" of all-ONEs isrequired.NOTE 2:The insertion of AIS - especially due to detection of dTIM - will cause the RS-DCC channel to be"squelched" too, so that control of the NE via this channel is lost. If control is via this channel only, thereis a risk of a dead-lock situation if dTIM is caused by a misprovisioning of ExTI.Defect Correlations:cTIM¬MON and dTIM.Performance Monitoring:For further study.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)184.3STM-1 Regenerator Section Adaptation functions4.3.1STM-1 Regenerator Section to Multiplex Section Adaptation SourceRS1/MS1_A_SoSymbol:RS1/MS1MS1_CIRS1_AIFigure 8: RS1/MS1_A_So symbolInterfaces:Table 3: RS1/MS1_A_So input and output signalsInput(s)Output(s)MS1_CI_DMS1_CI_CKMS1_CI_FSMS1_CI_SSFRS1_AI_DRS1_AI_CKRS1_AI_FSProcesses:The function multiplexes the MS1_CI data (2 403 bytes / frame) into the STM-1 byte locations defined inETS 300 147 [1] and depicted in figure 2.NOTE 1:There might be cases in which the network element knows that the timing reference for a particularSTM-1 interface can not be maintained within ±4,6 ppm. For such cases MS-AIS can be generated. Thisis network element specific and outside the scope of the present document.Defects:None.Consequent Actions:aAIS¬CI_SSF.On declaration of aAIS the function shall output all ONEs signal within 250 µs; on clearing of aAIS the function shalloutput normal data within 250 µs. The frequency of the all ONEs signal shall be within 155 520 kHz ± 20 ppm.NOTE 2:If CI_SSF is not connected (when RS1/MS1_A_So is connected to a MS1_TT_So), SSF is assumed to befalse.Defect Correlations:None.Performance Monitoring:None.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)194.3.2STM-1 Regenerator Section to Multiplex Section Adaptation SinkRS1/MS1_A_SkSymbol:RS1/MS1MS1_CIRS1_AIFigure 9: RS1/MS1_A_Sk symbolInterfaces:Table 4: RS1/MS1_A_Sk input and output signalsInput(s)Output(s)RS1_AI_DRS1_AI_CKRS1_AI_FSRS1_AI_TSFMS1_CI_DMS1_CI_CKMS1_CI_FSMS1_CI_SSFProcesses:The function separates MS1_CI data from RS1_AI as depicted in figure 2.Defects:None.Consequent Actions:aSSF¬AI_TSF.Defect Correlations:None.Performance Monitoring: None.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)204.3.3STM-1 Regenerator Section to DCC Adaptation SourceRS1/DCC_A_SoSymbol:RS1/DCCDCC_CI_DRS1_AISTM-1_TIDCC_CI_CKFigure 10: RS1/DCC_A_So symbolInterfaces:Table 5: RS1/DCC_A_So input and output signalsInput(s)Output(s)DCC_CI_DSTM1_TI_CKSTM1_TI_FSRS1_AI_DDCC_CI_CKProcesses:The function multiplexes the DCC CI data (192 kbit/s) into the byte locations D1, D2 and D3 as defined inETS 300 147 [1] and depicted in figure 3.NOTE:DCC transmission can be "disabled" when the matrix connection in the connected DCC_C function isremoved.Defects:None.Consequent Actions:None.Defect Correlations:None.Performance Monitoring:None.SIST EN 300 417-3-1 V1.1.3:2003

ETSIEN 300 417-3-1 V1.1.3 (1999-05)214.3.4STM-1 Regenerator Section to DCC Adaptation Sink
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