Multiplex communications – Pathfinding or routing – Through a circuit switch
Patent
1997-05-05
1998-03-03
Hsu, Alpus H.
Multiplex communications
Pathfinding or routing
Through a circuit switch
370398, 370422, H04L 1256
Patent
active
057243484
ABSTRACT:
A data switch is described with a multi-port data switching element, one or more input/output adapters for receiving user data cells from outside the switch and for transmitting cells switched through the switching element to a network outside the switch, and a control element including a control processor. To reduce the complexity of the data switch, the single control processor is used to control operations of hardware modules on both the the control element on which the processor is located and on the input/output adapters. The control is provided by means of control cells which generally traverse the same data paths as user data cells and generally conform to the format of user data cells, at least within the data switch. Both the control processor and the hardware modules are capable of generating control cells and transmitting them toward a target, either the control processor or hardware modules.
REFERENCES:
patent: 4821259 (1989-04-01), DeBruler et al.
patent: 5315588 (1994-05-01), Kajiwara et al.
patent: 5430720 (1995-07-01), Larsson et al.
patent: 5539884 (1996-07-01), Robrok, II
Basso Claude
Calvignac Jean
Girard Mathieu
Orsatti Daniel
Susini Michel
Hsu Alpus H.
International Business Machines - Corporation
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