Patent ID: 8316223
Filing Date: 2012-11-20
Classification: G06F,H04L

Abstract:
1. A powered device (PD) adapted to operate in conjunction with a coupled power sourcing equipment (PSE) so that it can receive inline power from the PSE in a wired data telecommunications network having at least two pairs of conductors coupling the PD and the PSE, the PD comprising: an identity network responsive to a signal from the PSE for confirming that the PD is adapted to receive inline power from the PSE; circuitry responsive to a series of classification cycles carried out by the PSE, the circuitry presenting a series of responsive currents over the conductors to the PSE, the currents corresponding to predetermined inline power classes and the classes not all being the same; and a nonvolatile memory capable of retaining its contents for at least a period of time while a voltage signal from the PSE drops below a predetermined voltage.