Power supply for ethernet lan connected telephone

Details Power supply for ethernet lan connected telephone Power supply for ethernet lan connected telephone

H - Electricity

04

M

H04M 19/08 (2006.01) H04L 12/40 (2006.01)

Patent

CA 2325767

A powering arrangement for providing power to an Ethernet connected device, comprising a power unit connected via a first terminal to the device and via a second terminal to an Ethernet cable carrying two signal wire pairs and two spare wire pairs. A connection is provided within the power unit for interconnecting the signal wire pairs and a first one of the two spare wire pairs to the device, and a source of power is provided within the power unit connected to a second one of the spare wire pairs from the device for providing power thereto.

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