Method and system for furnishing backup power and data from power sourcing equipment to powered device

摘要

A power sourcing equipment is connected to a powered device via a cable. The power sourcing equipment is configured to provide power to different types of devices and the powered device is configured to receive power from different types of power sourcing equipment. The power sourcing equipment has a control system for determining the type of powered device that is connected to the cable and furnishes power in response to the determination. The powered device has a detection resistance that is detectable by different types of power sourcing equipment. Also described is a powered device capable of establishing communication with PSEs of multiple types.

主权项

1. A system, comprising:
an adaptive power sourcing equipment (APSE) coupled to a cable having at least a first wire pair, a second wire pair, and a third wire pair, the APSE configured to furnish power over the first wire pair to a powered device (PD) of a first type for receiving power over the first wire pair and to furnish power over the second and third wire pairs to a PD of a second type for receiving power over the second and third wire pairs; and an adaptive PD (APD) configured to function as a PD of the first type and as a PD of the second type; wherein the APSE is configured to furnish power over the first, second, and third wire pairs to the APD in response to a determination that the APD is functioning as a PD of the first type and as a PD of the second type.