Apparatus and method for remotely powering access equipment over a 10/100 switched ethernet network
DC CAFC
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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Abstract
Apparatus for remotely powering access equipment over a 10/100 switched Ethernet network comprises an Ethernet switch card with a phantom power supply for remote access equipment and added circuitry for automatic detection of remote equipment being connected to the network; determining whether the remote equipment is capable of accepting remote power in a non-intrusive manner; delivering the phantom power to the remote equipment over the same wire pairs that deliver the data signals, and automatically detecting if the remote equipment is removed from the network.
461 Citations
9 Claims
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1. Apparatus for remotely powering access equipment in a data network, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. Method for remotely powering access equipment in a data network, comprising,
providing 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, and a secondary power source arranged to supply power from the data node via said data signaling pair to the access device, delivering a low level current from said main power source to the access device over said data signaling pair, sensing a voltage level on the data signaling pair in response to the low level current, and controlling power supplied by said secondary power source to said access device in response to a preselected condition of said voltage level.
Specification
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Litigation Data
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Current AssigneeNetwork-1 Technologies, Inc.
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Original AssigneeMerlot Communications Incorporated
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InventorsKatzenberg, Boris, Deptula, Joseph A.
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Primary Examiner(s)Hofsass, Jeffery A.
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Assistant Examiner(s)Nguyen, Tai T.
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Application NumberUS09/520,350Time in Patent Office406 DaysField of Search340/310.01, 340/310.07, 340/825.16, 340/310.02, 340/310.06, 379/386, 379/400, 379/32US Class Current370/200CPC Class CodesH04L 12/10 Current supply arrangementsH04L 49/351 for local area network [LAN...H04L 49/40 Constructional details, e.g...
