Network link endpoint capability detection

  • US RE39,405 E1
  • Filed: 11/12/1999
  • Issued: 11/21/2006
  • Est. Priority Date: 11/02/1992
  • Status: Expired due to Term
First Claim
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1. In a data communication network comprising a hub coupled to at least one node, an apparatus for establishing communication between the hub and a node comprising:

  • a hub transmitter coupled to the hub for transmitting a hub protocol signal to the node, the hub protocol signal indicating a communication protocol, including a format for a data transmission, with which the hub is capable of communicating;

    a node receiver coupled to the node for receiving the hub protocol signal;

    a node transmitter coupled to the node for transmitting a node protocol signal to the hub, the node protocol signal indicating a communication protocol, including a format for a data transmission, with which the node is capable of communicating;

    wherein the communication protocol indicated by the node protocol signal is different from the communication protocol indicated by the hub protocol signal;

    a hub receiver coupled to the hub for receiving the node protocol signal;

    a protocol identifying circuit coupled to the hub receiver for identifying the communication protocol indicated by the node protocol signal from among a plurality of possible communication protocols with which the hub is capable of communicating; and

    wherein the hub transmitter includes a communication circuit for communicating with the node using the communication protocol indicated by the node protocol signal in response thereto.

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