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Power sourcing equipment (PSE) are devices that provide power on the Ethernet cable. This device may be a network switch, commonly called an endspan (IEEE 802.3af refers to it as endpoint), or an intermediary device between a non-PoE-capable switch and a PoE device, an external PoE injector, called a midspan device. [20]
Power over may refer to various forms of powering devices over data links: Power over eSATA (eSATAp), a variant of eSATA also delivering power over the same cable (but not the same wires inside the cable) Power over Ethernet (PoE), a method to power devices over their Ethernet cable (shared wires for data and power) Power over fiber (PoF ...
The NBASE-T effort also standardized how its switches can implement power over Ethernet according to the IEEE 802.3at and successor standards. This allows a single cable to provide both power and data for high-bandwidth wireless access points such as those that implement the 802.11ac and 802.11ax standards. [8]
The spare pairs may be used for power over Ethernet (PoE), for two plain old telephone service (POTS) lines, or for a second 10BASE-T or 100BASE-TX connection. In practice, great care must be taken to separate these pairs as 10/100-Mbit/s Ethernet equipment electrically terminates the unused pins ("Bob Smith Termination"). [19]
Using point-to-point copper cabling provides the opportunity to deliver electrical power along with the data. This is called power over Ethernet and there are several variations defined in IEEE 802.3 standards. Combining 10BASE-T (or 100BASE-TX) with Mode A allows a hub or a switch to transmit both power and data over only two pairs. This was ...
PowerDsine was a semiconductor and systems company, acquired by Microsemi in January 2007 [2] following its IPO in 2004. [3] It was established in 1994. [4] Its initial products were telephone ringing generators, [5] and it also developed DSL remote power feeding modules, [6] before inventing Power over Ethernet's (PoE) precursor Power over LAN.
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