An In-Depth Look At Power Over Ethernet (PoE)

Enable-IT explains Power over Ethernet and the applications in which it is used

If you need a better understanding of what Power over Ethernet is, what it’s used for and how Enable-IT patented the technology so that traditional distances could go beyond the limitations seen with regular Ethernet, then look no further.

Power over Ethernet (or PoE, for short) is an ever-changing technology that goes beyond the ultra-brand functionality of Ethernet, providing steady DC power using the same cables that Ethernet data is already using. Enable-IT, who invented PoE extension technology, have become and remain the industry leaders for advanced PoE solutions.

IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) – Defining Power over Ethernet

PoE is a way to securely leverage or bring together electrical current into structured wiring designed for and used by LAN (Local Area Network). Based on this idea, the spared wire pairs can be used for negative and positive voltage or be connected on the same wire pairs for Ethernet data signaling.

Both PoE and PoE+ technology can use any copper wiring. Electricity principals do apply – the thicker the copper wiring, the more powerful a current can be sent and for greater distances. A number of networking centric companies use PoE technically have a limited understanding of this idea, using the Ethernet data standards.

PoE power begins with a Power Sourcing Module (PSE) that changes any International Mains Electrical outlets into a run of transistors that supplements the Main’s source of power to a safer level to provide the electrical current for a LAN standard RJ-45 jack. This means that the connector pins of the RJ-45 can go beyond one-pair to four-pair, enabling the current to be safely transmitted to a PoE powered device. There are all kinds of PDs in existence: wireless LAN access points, IP network cameras, voice over IP phones, etc.