Apparatus and method for remotely powering access equipment over a 10/100 switched ethernet network

  • US 6,218,930 B1
  • Filed: 03/07/2000
  • Issued: 04/17/2001
  • Est. Priority Date: 03/10/1999
  • Status: Expired due to Term
First Claim
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1. Apparatus for remotely powering access equipment in a data network, comprising:

  • a data node adapted for data switching, an access device adapted for data transmission, at least one data signaling pair connected between the data node and the access device and arranged to transmit data therebetween, a main power source connected to supply power to the data node, a secondary power source arranged to supply power from the data node via said data signaling pair to the access device, sensing means for delivering a low level current from said main power source to the access device over said data signaling pair and sensing a resulting voltage level thereon, and control means responsive to said voltage level and adapted to control power supplied by said secondary power source to said access device in response to a preselected condition of said voltage level.

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