What Is Power Over Ethernet Poe
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Doing so minimizes the number of wires that must be strung in order to install the network.
What is power over ethernet poe. While poe doesn t add ethernet data capabilities it does offer expanded options for how and where ethernet end devices can be placed. Power over ethernet poe technology sends 10 100 1000 mbps of data and 15w 30w 60w and up to 90w of power budget to devices over cat5e and cat6 ethernet cables for a maximum distance of 100m. Power over ethernet poe is a technology for wired ethernet local area networks that allows the electrical current necessary for the operation of each device to be carried by the data cables rather than by power cords. What is power over ethernet poe and what is it used for.
What is power over ethernet. Poe technology relies on the ieee 802 3af and 802 3at standards which are set by the institute of electrical and electronics engineers and. Power over ethernet poe is a technique for delivering dc power to devices over copper ethernet cabling eliminating the need for separate power supplies and outlets. It has been standardised by the ieee but there are also vendor implementations that are non standard.
The original ieee poe standard 802 3af 2003 specifies how to deliver up to 15 4w of dc power per switch port to each device at up to 33 feet over category 3 5 5e and 6 ethernet cables. Simply connect other network devices to the switch as normal and the switch will detect whether they are poe compatible and enable power automatically. This allows a single cable to provide both data connection and electric power to devices such as wireless access points waps internet protocol ip cameras and voice over internet protocol voip phones. Power over ethernet poe is a networking feature defined by the ieee 802 3af and 802 3at standards.
Power is supplied in common mode over two or more of the differential pairs of wires found in the ethernet cables and comes from a power supply within a poe enabled networking device such as an ethernet switch or can be injected into a cable run with a midspan power supply. Poe lets ethernet cables supply power to network devices over the existing data connection. Poe capable devices can be power sourcing equipment pse powered devices pds or sometimes both. A poe switch is a network switch that has power over ethernet injection built in.
A midspan power supply also known as a poe power injector is an.
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