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Signaling frequency detection for a communications network

  • US 5,537,098 A
  • Filed: 03/16/1995
  • Issued: 07/16/1996
  • Est. Priority Date: 04/14/1993
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting signaling frequencies in a communications network, comprising:

  • a token ring communications network, the token ring communications network including nodes for transmitting and receiving communications signals and a signaling medium for transporting the communications signals, the signaling medium including lobe circuits for connecting to the nodes and a trunk circuit having trunk segments for connecting to the lobe circuits in a ring configuration,a plurality of ports including an input port connected to an input trunk segment of said trunk segments, and an output port connected to an output trunk segment of said trunk segments, and a plurality of lobe ports connected to the lobe circuits;

    an internal trunk circuit for connecting said plurality of ports to each other;

    means, connected to each of said plurality of ports, for sensing a frequency of the communications signals at each of said plurality of ports; and

    a controller, connected to each of said means for sensing, said controller responsive to said frequency of the communications signals, sensed at each of said plurality of ports, said controller connecting a particular one of said plurality of ports to said internal trunk circuit, while said frequency of the communications signals at said particular port are within a valid predetermined frequency range.

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