Space-division switching network for high data rate signals
First Claim
1. A space switching network for high data rate digital signals, the network having inlet lines and outlet lines connected thereto and comprising a plurality of stages with at least two consecutive stages being interconnected by a set of intermediate lines, each stage including switching matrices, said network further including regenerator modules, respectively at its inlets, at its outlets, and at each end of its intermediate lines, the regenerator modules at its inlets and at its outlets being connected to respective input lines and output lines, each regenerator module including means for recovering a clock rate from the high data rate digital signals passing therethrough and serving to correct amplitude, phase and wave shape degradation in the digital signals due to their passage through the inlet lines, the switching matrices and through the intermediate lines.
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Abstract
A multi-stage space-division switching network comprises groups of regenerators (RE1 to RE16) connected to input lines and to output lines of the switching network, it further includes groups of regenerators (RS1 to RS16) connected to a first end of intermediate links (LI1 to LI28) interconnecting two stages and groups of regenerators (R3.1 to R3.16) connected to the other ends of the intermediate links. A monitoring device comprises sampling devices (P) connected to the groups of regenerators and to a comparator circuit (CC). A main marker (MQP) receives connection instructions and sampling instructions and transmits these instructions to auxillary markers (MQ) which control the sampling circuits (P) and the switching circuits (C1, C2) of the switching network.
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5 Claims
- 1. A space switching network for high data rate digital signals, the network having inlet lines and outlet lines connected thereto and comprising a plurality of stages with at least two consecutive stages being interconnected by a set of intermediate lines, each stage including switching matrices, said network further including regenerator modules, respectively at its inlets, at its outlets, and at each end of its intermediate lines, the regenerator modules at its inlets and at its outlets being connected to respective input lines and output lines, each regenerator module including means for recovering a clock rate from the high data rate digital signals passing therethrough and serving to correct amplitude, phase and wave shape degradation in the digital signals due to their passage through the inlet lines, the switching matrices and through the intermediate lines.
Specification