Power over Ethernet (POE) is a technology that lets network cables carry electrical power.
For example, a digital security camera normally requires two connections to be made when it is installed:
- A network connection, in order to be able to communicate with video recording and display equipment
A power connection, to deliver the electrical power the camera needs to operate
However, if the camera is POE-enabled, only the network connection needs to be made, as it will receive its electrical power from this cable as well.
Specifying Power over Ethernet brings many advantages to an installation:
- Time and cost savings – by reducing the time and expense of having electrical power cabling installed. Network cables do not require a qualified electrician to fit them, and can be located anywhere.
Flexibility – without being tethered to an electrical outlet, devices such as IP cameras and wireless access points can be located wherever they are needed most, and repositioned easily if required.
Safety – POE delivery is intelligent, and designed to protect network equipment from overload, underpowering, or incorrect installation.
Reliability – POE power comes from a central and universally compatible source, rather than a collection of distributed wall adapters. It can be backed-up by an uninterruptible power supply, or controlled to easily disable or reset devices.
Scalability – having power available on the network means that installation and distribution of network connections is simple and effective.
POE has many applications, but the three key areas are:
- VoIP phones – the original POE application. Using POE means phones have a single connection to a wall socket, and can be remotely powered down, just like with the older analog systems.
IP cameras – POE is now ubiquitous on networked surveillance cameras, where it enables fast deployment and easy repositioning.
Wireless – Wifi and Bluetooth APs and RFID readers are commonly PoE-compatible, to allow remote location away from AC outlets, and relocation following site surveys.
Nanosoft POE is best solution for power transmitting over LAN.
Power over Ethernet
Updated on 2015-10-27T10:28:25+00:00, by .