Misconceptions about POE

Misconceptions about POE

Power_on_the_factory_floorPower over Ethernet (POE), allows you to seamlessly power remote devices without the use of AC power. There are several benefits to be derived from incorporating POE into your network design. However, some organizations have delayed adopting    POE, due to the various myths and misconceptions that surround it. It is therefore important to understand exactly what POE installation requires.

POE is a technology for sending data and power over Ethernet cable, to devices such as voice over IP phones, wireless access points, and security cameras. With POE you can supply electricity to devices in remote areas, where there is no AC outlet close by.

Setting the record straight on popular misconceptions about POE:

  1. POE requires the installation of new network equipment. This is not so, because POE power devices and power sourcing equipment can be added to your existing infrastructure with the use of POE switches, or POE mid-span injectors.
  2. All POE standards are the same. There are different POE standards. The original POE (IEEE 802.3af), delivers power to 15.4W, but there is also POE Plus (IEEE 802.3at) that increases the available power to 30W. POE Plus satisfies the power requirements for more demanding applications such as outdoor cameras, while POE can power IP phones and wireless access  points.
  3. POE requires special wiring. This is not the case, as POE operates over standard Ethernet cable. Therefore if you are already using Cat 5e or Cat 6, you don’t have to modify your existing cabling.
  4. POE requires specific electrical knowledge. POE lines don’t have to be installed by an electrician. Most of the equipment is plug-and-play, and you don’t need any additional equipment or power supply.
  5. POE has compatibility issues. There were some problems when POE was just introduced, but IEE 802.3af is now a universal standard.

Now that you know the facts, it’s easy to understand why POE is such an efficient solution for today’s businesses.

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