�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