ITU-T Rec. G.782 TYPES AND GENERAL CHARACTERISTICS OF SYNCHRONOUS DIGITAL HIERARCHY (SDH) MULTIPLEXING ...
FOREWORD
1 Introduction
    1.1 Scope
    1.2 Abbreviations
    1.3 Definitions
        1.3.1 Administrative unit (AU)
        1.3.2 Administrative unit group (AUG)
        1.3.3 Data communications channel (DCC)
        1.3.4 higher order path
        1.3.5 higher order path adaptation (HPA)
        1.3.6 higher order path connection (HPC)
        1.3.7 higher order path termination (HPT)
        1.3.8 Lower order path
        1.3.9 lower order path adaptation (LPA)
        1.3.10 lower order path connection (LPC)
        1.3.11 lower order path termination (LPT)
        1.3.12 Message communications function (MCF)
        1.3.13 multiplex section overhead (MSOH)
        1.3.14 multiplex section protection (MSP)
        1.3.15 multiplex section termination (MST)
        1.3.16 multiplexer timing physical interface (MTPI)
        1.3.17 multiplexer timing source (MTS)
        1.3.18 Path overhead (POH)
        1.3.19 regenerator section overhead (RSOH)
        1.3.20 regenerator section termination (RST)
        1.3.21 section adaptation (SA)
        1.3.22 Synchronous digital hierarchy (SDH)
        1.3.23 synchronous equipment management function (SEMF)
        1.3.24 Section overhead (SOH)
        1.3.25 SDH physical interface (SPI)
        1.3.26 Synchronous transport module (STM)
        1.3.27 Telecommunications management network (TMN)
        1.3.28 Tributary unit (TU)
        1.3.29 Tributary unit group (TUG)
        1.3.30 Virtual container (VC)
2 Overview of equipment functions
    2.1 Multiplexing method
        2.1.1 Generalized logical blocks
        2.1.2 Signal flow G.703 input to STM-N output: multiplexing
        2.1.3 Signal flow STM-N input to G.703 output: demultiplexing
    2.2 Operations, administration, maintenance and provisioning (OAM&P)
        2.2.1 Overhead applications
        2.2.2 TMN access
        2.2.3 Order-wire
        2.2.4 User channel
    2.3 STM-N protection switching
        2.3.1 MSP architectures
        2.3.2 Operation modes
    2.4 Integrated interfaces
3 Multiplexing equipment types
    3.1 Type I (Figure 3-1/G.782)
    3.2 Type Ia (Figure 3-2/G.782)
    3.3 Type II (Figure 3-3/G.782)
    3.4 Type IIa (Figure 3-4/G.782)
    3.5 Types IIIa and IIIb
        3.5.1 Type IIIa (Figure 3-5/G.782)
        3.5.2 Type IIIb (Figure 3-6/G.782)
    3.6 Type IV (Figure 3-7/G.782)
4 General performance requirements
    4.1 Timing and synchronization overview
        4.1.1 General
        4.1.2 Guidelines for synchronization
        4.1.3 Specification of jitter and wander
    4.2 Equipment error performance
    4.3 Availability and reliability
    4.4 Environmental conditions