Which IEEE standard implements PoE+?
IEEE standard 802.3at, also known as PoE+ (Power over Ethernet Plus), is the specific standard that implements the capability of providing higher power levels over Ethernet cables.
It was introduced in 2009 as an enhancement over the earlier PoE standard (802.3af).
PoE+ enables devices to receive up to 25.5 Watts of power, whereas the original PoE standard only provided up to 15.4 Watts. This increased power allows for the efficient delivery of power to more power-hungry devices such as wireless access points, IP phones, and pan-tilt-zoom cameras.
The standard specifies methods for detecting whether a device is PoE+ capable and for negotiating power levels between the power sourcing equipment (PSE) and the powered device (PD). It utilizes the same principles as PoE, such as using unused wire pairs in Ethernet cables to carry power in addition to data.
By implementing the IEEE 802.3at standard, network administrators can deploy PoE+ enabled devices without the need for additional power outlets near the device’s location. This simplifies installation, reduces cabling complexity, and provides flexibility in the placement and movement of powered devices within the network infrastructure.
Overall, PoE+ expands the capabilities of Power over Ethernet and allows for the efficient and reliable delivery of power to a variety of networked devices, contributing to the ease of deployment and management of network infrastructure.
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