Asynchronous transfer mode switching system capable of reducing

Details Asynchronous transfer mode switching system capable of reducing Asynchronous transfer mode switching system capable of reducing

1995-03-03

1996-05-28

Kizou, Hassan

Multiplex communications

Wide area network

Packet switching

370 941, 3701101, H04L 1256

Patent

active

055219179

ABSTRACT:
In an ATM (asynchronous transfer mode) switching system, a memory capacity of an ATM switch control information management table is reduced without any limitation in values of VPI and VCI even when a total number of these VPI and VCI is restricted. In this ATM switching system, a resource management unit 12 announces resource hunt information containing the VPI and the VCI to a call control unit, and further hunts a connection ID (identification) number via a switch control unit from a connection ID management table during a call-originating resource hunting operation. When the call control unit requests the switch control unit 13 to make a connection of an ATM switch at a call-originating side, or a call-terminating side, the call control unit designates this connection ID number together with these VPI and VCI. The switch control unit sets control information containing the VPI and the VCI to an ATM switch control information management table while using this connection ID number as key information, whereby this switch control unit controls the path connection of the ATM switch. As a result, the ATM switch control information management table may require such a memory capacity equal only to a value for allowing the path connections, but not equal to the maximum values of these VPI and VCI.

REFERENCES:
patent: 5067123 (1991-11-01), Hyodo et al.
patent: 5390184 (1995-02-01), Morris
patent: 5394397 (1995-02-01), Yanagi et al.
patent: 5432777 (1995-07-01), Le Boudec et al.
patent: 5440547 (1995-08-01), Easki et al.
"Introduction To B-ISDN", published by the Japan ITU Foundation, vol. 1, 1992, pp. 130-131.

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