802.3af

802.3af

An IEEE standard for powering network devices via Ethernet cable. Also known as "Power-over-Ethernet," it provides 48 volts over 4-wire or 8-wire twisted pair. The 8-wire cable uses one twisted pair for the power, while the 4-wire transmits the power over the same pair as the data, but uses different frequencies. Designed with IP phones and wireless access points in mind, it allows devices such as these to be placed in locations that have no electrical outlets. Only the Ethernet cable needs to be connected to the device. See inline power.
Mentioned in ?
References in periodicals archive ?
Perle offers the only PoE Ethernet Extenders on the market that have a fully compliant IEEE 802.
The device is compatible with powered devices that comply with the IEEE 802.
The new Draft N Aironet 1140 Series Access Point, shipping since last month, functions within the standard 802.
The technology was pioneered by PowerDsine, a founding member of the IEEE 802.
The midspan features diagnostic LEDs and the same safety and protection systems as with the IEEE 802.
An IT administrator can plug a standard Cat5 cable into our tester and an RJ-45 outlet, and immediately identify the presence of power, the source of the power, and whether the power is IEEE 802.
Two physical-layer implementations of PoE are supported by 802.
EAP300 Business-Class Indoor High-Power (up to 29dBm) Long-Range Wireless-N Access Point/WDS/Repeater with Smoke Detector Housing and 802.
It provides the capability for Ethernet switch makers to increase the supplied port power output to 30 watts and is meant to supersede the previous 15 watt 802.
4W of power per port over two pairs in compliance with IEEE 802.
Linear Technology's Power over Ethernet controllers fully meet the industry standard for this major emerging market, known as IEEE 802.
Via Licensing is issuing this patent call for the purpose of identifying the owners of patents that are determined to be essential to the practice of the IEEE 802.