Power-over-Ethernet (PoE) — Logitel

Power-over-Ethernet (PoE)

Power-over-Ethernet (PoE)

With the introduction of new Ethernet-enabled devices expanding geometrically, the need to power these devices from standard AC power outlets has become a limiting factor. IP telephones, wireless access points, IP cameras and device servers are examples of devices limited by the need to have an AC power outlet nearby to plug in a DC power adapter.

Power over Ethernet (POE) supplies power to network devices over the same communications lines (standard Category 5e, CAT-5) that carries the data. Devices can be installed wherever structured Ethernet wiring is located, without the need for AC power outlets nearby.

This technology is especially useful for powering IP telephones, wireless LAN access points, cameras with pan tilt and zoom (PTZ), remote Ethernet switches, embedded computers, thin clients and LCDs.

The benefits of PoE include increased mobility for end devices, added safety (no AC power involved), simplicity of installation, reliability, security and cost savings. These advantages have led to the development of a variety of new PoE-enabled products


Advantages of POE

  • Cheaper cabling
  • A Gigabit of data per second to every device is possible
  • Direct injection from standard 48 V DC battery power arrays
  • Symmetric distribution is possible.
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