Multiplex communications – Wide area network – Packet switching
Patent
1991-08-29
1993-11-02
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 581, 370 65, 340826, 3408258, 379272, H04J 324
Patent
active
052589773
ABSTRACT:
A switching network for an asynchronous time-division multiplex transmission system includes a first stage having a plurality of switching blocks (4 to 7), to which are applied over auxiliary lines cells and routing information intended for various trunk lines and which are coupled to at least one switching block (8, 9) of a second stage. Inputs of switching blocks (4 to 7) of the first stage are coupled to auxiliary lines and at least one output of a switching block (8, 9) of the second stage. Outputs of switching blocks of the first stage are coupled to trunk lines and to at least one input of a switching block of the second stage. A cell extraction circuit (56 to 61) which is always coupled to a control circuit (10 to 15) of the associated switching block is coupled either to at least one input or to at least one output of each switching block.
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patent: 5091903 (1992-02-01), Schrodi
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Mertelmeier Christine
Wolker Roland
Hsu Alpus H.
Olms Douglas W.
Slobod Jack D.
U.S. Philips Corp.
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