CONTENTS

 1     Introduction
        1.1     Scope
        1.2     Structure of this Recommendation
        1.3     References
        1.4     Definitions
        1.5     Abbreviations
 2     Scenarios for radio digital section integration into SDH
        2.1     Architecture description
        2.2     Architectural principles
        2.3     Digital sections at 51.84 Mbit/s and other sub-STM-1 bit rates
 3     Satellite system as a wide-area SDH network node
        3.1     Architecture description
        3.2     Architectural principles
        3.3     Examples of satellite-system based digital cross-connects
                  3.3.1     Wide-area cross-connect with various S-IOS rates
                  3.3.2     Wide-area cross-connect with 51.84 Mbit/s S-IOS
 4     Guidelines for constructing sub-STM-1 multiplex structures and radio section layers           
        4.1     General
        4.2     SDH multiplex conversion
        4.3     Functions of radio section overhead (SOH)
        4.4     Media specific equipment interfaces (REI, SEI)
 5     SDH management aspects
        5.1     Network layer management principles
        5.2     General requirements
        5.3     NE layer management facilities
        5.4     Bandwidth efficiency
        5.5     Management communications and interfaces