Patent ID: 8867523

Claim:
A method carried out in a device that is coupled to first and second wirings, the device including a single enclosure housing first and second transceivers, a transformer, and a device power supply, the method comprising: carrying out a first full-duplex serial data communication over the first wiring that simultaneously carries DC power and first data signals, the first full-duplex serial data communication enabled by the first transceiver; carrying out a second full-duplex serial data communication over the second wiring, the second full-duplex serial data communication enabled by the second transceiver; employing the transformer to pass only the first data signals between the first wiring and the first transceiver; receiving the DC power from the first wiring; providing the DC power to the device power supply, the device power supply coupled to the first and second transceivers to power the first and second transceivers; and addressing the device in a network.