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 ?
Under the terms of the revised settlement, Juniper paid Network-1 $12.7M (reduced from $13.25M in the original settlement) and received a fully-paid license to the Remote Power Patent (and certain other patents owned by Network-1) for its full term which expires in March 2020, which will apply to its sales of Power over Ethernet products, including those PoE products which comply with the Institute of Electrical and Electronic Engineers 802.3af and 802.3at Standards.
The vendor's expanded line of low-cost, high-performance transformers support the full range of Power-over-Ethernet (PoE) applications including IEEE 802.3af (15.4 W max), IEEE 802.3at (30 W), Cisco UPoE, and other higherpower PoE extensions up to 60 W.
Recently Patton announced the new water-proof IP67- compliant CopperLink 1101 PoE Extender kits with outdoor enclosures that can extend 10/100 Ethernet and up to 15 Watts of 802.3af (or legacy) PoE up to 3,300 feet (915 meters).
Up to 15.4 W power at 48 V DC can be fed per PoE port according to IEEE 802.3af.
Patton's new PoE Extender kits can extend 10/100 Ethernet and up to 15 Watts of 802.3af (or legacy) PoE up to 3,300 feet (915 meters) to IP-enabled devices using a single pair of common copper telephone wires or coaxial cable.
Under the terms of the license, Shoretel will license the Remote Power Patent for its full term which expires in March 2020, and pay a license initiation fee and quarterly royalties based on its sales of Power over Ethernet ("PoE") products, including those PoE products which comply with the Institute of Electrical and Electronic Engineers ("IEEE") 802.3af and 802.3at Standards.
Ruckus ZoneFlex R700 operates with full functionality using standard 802.3af
The Cadyce's CA-PS800 is equipped with 8X 10/100BASE-T Ethernet ports with IEEE 802.3af PoE standard.
Configured as either an endpoint or midspan device, it is designed to extract power from a conventional twisted pair Category 5 Ethernet cable and conforms to the IEEE 802.3af Power-over-Ethernet standard.
Other benefits include support for Edge storage with the built-in SD/SDHC memory card slot, pixel counter, corridor format, Power over Ethernet (IEEE 802.3af) and I/O port for PIR sensor possibilities.
The cameras are powered using Power over Ethernet (IEEE 802.3af), which simplifies installation since a standard network cable--when connected to a switch with Power over Ethernet support--will carry power, video and PTZ controls.