Table of Contents

Foreword
1 Scope
2 References
3 Abbreviations
4 Structure of this ETR
5 Vocabulary for SDH network architecture
6 Transport functional architecture of SDH-based networks
   6.1 General
   6.2 SDH transport network layers
7 Application of concepts to network topologies and structures
8 Transport network availability enhancement techniques
   8.1 SDH trail protection examples
   8.2 SDH sub-network connection protection examples
9 Choice of primary rate mapping
   9.1 Features of the primary rate mappings
   9.2 Selection of mapping options
10 Introduction of SDH-based transport networks
   10.1 General
   10.2 Types of circuit layer signals
   10.3 Initial introduction of SDH-based equipment
   10.4 Interworking between PDH- and SDH-based transport
        networks
   10.5 Introduction STM-N interfaces on 64 kbit/s switches
        (and DXCs)
History

Abstract

Equivalent to parts G.sna1 and G.sna2. Identifies main applications, describes network architecture, topologies, structures, synchronisation, evolution and access point identification and performance capabilities.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TM 3