4. Using multiplexing in networks

4.1 Access network

The essential role of the access network is to collect subscriber signals using resources adapted to the type of distribution encountered in the field (dispersed subscribers, as in rural areas, or relatively grouped subscribers, as in urban or industrial areas) and to route them to the appropriate transmission networks or service provider networks.

With the emergence of new services, the multiservice aspects of the access network are being reinforced, and developments in this direction are being confirmed within existing networks.

This section presents the French Transmic dedicated link network, whose main multiplexing and cross-connect elements have already been described in the sections on low-speed multiplexing....