CONTENTS

 1     Scope
 2     Abbreviations
 3     Concept of layers within a network architecture
        3.1     Layer classification
 4     Optical fibre cable
 5     Passive optical components
 6     Network installation and maintenance
 7     Electrical power supply
 8     Optical safety
 9     Other local distribution network references
References
Annex A
        A.1     Introduction
        A.2     Network architectures