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Alarm of a telecommunications terminal connected to a LAN

  • US 20030072438A1
  • Filed: 09/25/2002
  • Published: 04/17/2003
  • Est. Priority Date: 10/15/2001
  • Status: Active Grant
First Claim
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1. A method of supplying power to a terminal from Ethernet equipment via first and second pairs of wires that carry data between the terminal and the Ethernet equipment, the method comprising:

  • determining whether the Ethernet equipment is capable of meeting power requirements of the terminal;

    if the Ethernet equipment is not capable of meeting the power requirements, sending a first signal via the first and second pairs of wires to the terminal to notify that the Ethernet equipment is not capable of meeting the power requirements, wherein the first signal comprises a difference between bias voltages applied to the first and second pairs of wires, respectively.

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