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Switching node for a communications switching network

  • US 5,119,370 A
  • Filed: 09/28/1989
  • Issued: 06/02/1992
  • Est. Priority Date: 09/28/1989
  • Status: Expired due to Fees
First Claim
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1. A switching node comprising:

  • circuit switching means (20) for establishing circuit-switched connection paths between inputs and outputs of the switching node;

    message switching means (22) for communicating messages via the switching node; and

    control means (28) arranged to control the circuit switching means to establish the circuit-switched connection paths in dependence upon connection signalling messages communicated via the message switching means;

    wherein the control means (28) comprises;

    means (60) for receiving a connection signalling message from the message switching means;

    means (70) for maintaining at least one queue identifying free connection paths at the outputs of the switching node;

    means (62) responsive to an identification of a free connection path from said queue for supplying an outgoing connection signalling message to the message switching means in response to a received connection signalling message; and

    means (52) responsive to an identification of a free connection path from said queue for establishing a connection via the circuit switching means in response to a received connection signalling message.

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