What Is Power Over Ethernet Used For

Power over ethernet poe stands for a proven method of delivering dc power over the same twisted pair cabling used for lan data transmission.

What is power over ethernet used for. It is used for connecting remote devices that don t have a convenient local power source like ip cameras voip phones etc. Power data what power over ethernet is and why you might want to use it power over ethernet poe is a feature supported by devices that enable them to be powered by ethernet cabling. For example if you have 10 spy cameras distributed across the entire building in that case it needs 10 power supply units to. Poe capable devices can be power sourcing equipment pse powered devices pds or sometimes both.

Ethernet cable cat 5 6 7 uses 4 twisted pairs. This relatively high voltage allows efficient power transfer along the cable while still being low enough to be regarded as safe. A midspan power supply also known as a poe power injector is an additional poe power source that can be used in combination with a non poe switch. A phantom power technique is used to allow the powered pairs to also carry data.

Our power without the struggle white paper makes the case for poe deployment in more detail and explains how poe can be used effectively. Power over ethernet or poe describes any of several standards or ad hoc systems that pass electric power along with data on twisted pair ethernet cabling. 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. What is power over ethernet poe and what is it used for.

Power over ethernet allows an ethernet cable to carry dc power as well as data signals to attached devices. How power over ethernet works and why it is used. Power over ethernet is injected onto the cable at a voltage between 44 and 57 volts dc and typically 48 volts is used. Standards based power over ethernet is implemented following the specifications in ieee 802 3af 2003.

The main reason to use poe over the conventional power supply system is to reduce the cost of providing power supply to each peripheral that connects to the network. On early ethernet networks operating using 10base t and 100base tx only 2 pairs were. To find out about the myths and misconceptions about power over ethernet options for high power poe and a little more about how the technology works please continue to poe explained part 2. Poe technology allows a single poe network cable to provide the required communication and electrical power to a variety of devices.

Power over ethernet poe is a networking feature defined by the ieee 802 3af and 802 3at standards.