CPC H04L 12/10 (2013.01) [H01R 13/6581 (2013.01); H01R 24/64 (2013.01); H02J 9/061 (2013.01); H02M 3/315 (2013.01); H01R 2107/00 (2013.01)] | 28 Claims |
1. A power source equipment (PSE) network device comprising:
a power over ethernet (POE) port for receiving and connecting to an ethernet cable for carrying DC power to a device connected to other end of the ethernet cable; and
a POE injector connected to the POE port, wherein the POE injector is configured to introduce the DC power from a DC power supply onto the ethernet cable, wherein the POE injector includes a modem and a transformer that are configured to:
modulate first perturbations into the DC power, wherein the first perturbations are longitudinal common mode signals for the device connected to other end of the ethernet cable; and
demodulate second perturbations in the DC power, wherein the second perturbations are longitudinal common mode signals from the device connected to other end of the ethernet cable.
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