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Power over Ethernet (PoE) describes any of several standards or ad hoc systems that pass electric power along with data on twisted-pair Ethernet cabling. This allows a single cable to provide both a data connection and enough electricity to power networked devices such as wireless access points (WAPs), IP cameras and VoIP phones .
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 ...
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 ...
A modern switch may implement power over Ethernet (PoE), which avoids the need for attached devices, such as a VoIP phone or wireless access point, to have a separate power supply. Since switches can have redundant power circuits connected to uninterruptible power supplies , the connected device can continue operating even when regular office ...
IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet.The standards are produced by the working group of the Institute of Electrical and Electronics Engineers (IEEE).
PoE—Power over Ethernet; PoS—Point of Sale; POCO—Plain Old Class Object; POID—Persistent Object Identifier; POJO—Plain Old Java Object; POP—Point of Presence; POP3—Post Office Protocol v3; POSIX—Portable Operating System Interface, formerly IEEE-IX; POST—Power-On Self Test; PPC—PowerPC; PPI—Pixels Per Inch; PPM—Pages Per ...