Patent ID: 8635473
Filing Date: 2014-01-21
Classification: G06F,H04L

Abstract:
1. A method of operating a power sourcing equipment (PSE) to implement 4-conductor pair power for a powered device (PD) receiving inline power from and coupled to the PSE in a wired data telecommunications network having at least four pairs of conductors coupling the PD and the PSE, comprising: initiating an inline power discovery cycle; discovering that the PD is adapted to receive inline power from the PSE; conducting a plurality of inline power classification cycles, each comprising: combining the plurality of classes determined into a classification code for the PD; determining that the classification code corresponds to a request for 4-conductor power; and configuring the PSE in response to said determining to provide 4-conductor inline power to the PD, wherein a voltage applied to the PD by the PSE ramps to a marker level voltage between successive ones of the inline power classification cycles, the marker level voltage being outside the classification voltage range and above a reset logic level for the PD.