Cross-connecting system.

摘要

A synchronous cross connect for a transmission network. In order to cross connect a plurality of digitial rates the rates are justified up to synchronous rates, the justified synchronous rates being chosen to have a specific whole number relationship with one another (harmonically justified). This allows a wide range of signals to be cross-connected in one array and results in a switch architecture (Fig. 6a) which gives near linear cost in growing from small to large switches.