Multiplex communications – Wide area network – Packet switching
Patent
1990-04-10
1992-06-02
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 68, 370112, H04J 302
Patent
active
051193680
ABSTRACT:
A non-blocking broadband broadcast time-division switching system (10) comprises a time-slot replication stage (12) followed by a conventional TMS stage (11). The replication stage replaces the TSI stage of conventional switching systems. Time division multiplexed links (16) are connected to inputs of the system. Each input link is connected to the input of a different replicator (14). Each replicator has as many outputs as there are time slots (202) in a frame (201) on an input link. Replicators' outputs are connected each to a different input of the TMS stage. In one embodiment, a replicator generates each time slot of a received frame at a different output and replicates the individual time slot at the individual output during each time-slot interval of a frame interval. In another embodiment, a replicator generates each time slot of a received frame at a different time at each output, thus generating a delayed replica of the received frame at the outputs. In either embodiment, during each time-slot interval, each replicator transmits a frame of different received time slots to the TMS stage.
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Hiltner Jeffrey A.
Pawelski Robert L.
AT&T Bell Laboratories
Jung Min
Olms Douglas W.
Volejnicek David
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