ITU-T Rec. G.958 (12/1990) – DIGITAL LINE SYSTEMS BASED ON THE SYNCHRONOUS DIGITAL HIERARCHY FOR USE ON ...
FOREWORD
1 Introduction
    1.1 General
    1.2 Abbreviations
    1.3 Definitions
        1.3.1 Agent
        1.3.2 automatic laser shutdown (ALS)
        1.3.3 Bit interleaved parity order 8 (BIP-8)
        1.3.4 consecutive identical digit (CID) immunity
        1.3.5 Data communications channel (DCC)
        1.3.6 Embedded control channel (ECC)
        1.3.7 Loss of frame (LOF)
        1.3.8 Message communications function (MCF)
        1.3.9 Multiplex section alarm indication signal (MS-AIS)
        1.3.10 Network element (NE)
        1.3.11 Operations system/mediation device (OS/MD)
        1.3.12 Out of frame (OFF)
        1.3.13 Overhead access (OHA)
        1.3.14 Regenerator section overhead (RSOH)
        1.3.15 Regenerator section termination (RST)
        1.3.16 regenerator timing generator (RTG)
        1.3.17 S/R reference points
        1.3.18 SDH management subnetwork (SMS)
        1.3.19 SDH physical interface (SPI)
        1.3.20 Section overhead (SOH)
        1.3.21 Synchronous digital hierarchy (SDH)
        1.3.22 Synchronous equipment management function (SEMF)
        1.3.23 Synchronous transport module (STM-N)
        1.3.24 Telecommunications management network (TMN)
2 Applications
    2.1 System types
    2.2 System components
3 Type of transmission medium
4 Overall design features
    4.1 System design and optical parameters
    4.2 Transverse compatibility (Recommendation G.957)
    4.3 Joint engineering
    4.4 Pattern dependence testing
5 Transmission overheads
    5.1 Regenerator section model
    5.2 Regenerator model and functionality
        5.2.1 Scrambling in the regenerator
        5.2.2 Alarm indication signal (AIS)
        5.2.3 Medium dependent use of overhead bytes
        5.2.4 Intra-office link
        5.2.5 Management
    5.3 Regenerator interfaces
6 General characteristics of synchronous optical line systems
    6.1 Synchronization and timing signal
    6.2 Regenerator timing
    6.3 Jitter performance
        6.3.1 Jitter generation
        6.3.2 Jitter transfer
        6.3.3 Jitter tolerance
    6.4 Error performance
    6.5 Availability and reliability
    6.6 Environmental conditions
    6.7 Laser safety
7 Operational overview
    7.1 Overview
    7.2 General management functions
    7.3 Fault (maintenance) management
        7.3.1 Alarm surveillance
        7.3.2 Testing
        7.3.3 External events
    7.4 Performance management
    7.5 TMN interfaces
    7.6 Orderwire
APPENDIX I – Implementation of the cid immunity measurement
APPENDIX II – Description of automatic laser shutdown (ALS) capability in case of cable break
Reference