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Protocol analyzer pod for the ISDN U-interface

  • US 5,260,970 A
  • Filed: 06/27/1991
  • Issued: 11/09/1993
  • Est. Priority Date: 06/27/1991
  • Status: Expired due to Term
First Claim
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1. In a communication system having a first site and a second site which communicate via a full duplex twisted pair wire according to an Integrated Services Digital Network (ISDN) U-interface standard, wherein said twisted pair wire has a first end coupled to a second end and to the first site, and a third end coupled to a fourth end and to the second site, an apparatus for enabling a protocol analyzer to monitor U-interface data streams on the twisted pair wire, said apparatus comprising:

  • (1) first transceiver means, coupled to the second end, comprising a first data-in port and a first data-out port;

    (2) second transceiver means, coupled to the fourth end, comprising a second data-in port and a second data-out port, wherein said first data-out port is coupled to said second data-in port and said second data-out port is coupled to said first data-in port;

    wherein said first and second transceiver means separate the U-interface data streams into separate input and output data streams, such that a first data stream received by said first transceiver means is transmitted out said first data-out port, and a second data stream received by said second transceiver means is transmitted out said second data-out port; and

    wherein the protocol analyzer is coupled to said first data-out port and said second data-out port or said first data-in port and said second data-in port.

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