Patent ID: 6452945
Filing Date: 2002-09-17
Classification: H04J,H04L

Abstract:
An FDM node for use in optical communications networks comprising:an O/E converter for converting a first optical high-speed channel to a first electrical high-speed channel; a frequency division demultiplexer coupled to the O/E converter for frequency division demultiplexing the first electrical high-speed channel into a first plurality of low-speed channels; an electrical ADM crosspoint having a plurality of low-speed inputs coupled to the frequency division demultiplexer, a plurality of low-speed outputs, a plurality of tributary inputs, and a plurality of tributary outputs, for switchably coupling the low-speed inputs and tributary inputs to the low-speed outputs and tributary outputs; a frequency division multiplexer coupled to the low-speed outputs of the ADM crosspoint for converting a second plurality of low-speed channels into a second electrical high-speed channel; and an E/O converter coupled to the frequency division multiplexer for converting the second electrical high-speed channel to a second optical high-speed channel.