Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Power Over Ethernet
References: <[email protected]>
[email protected] (razor) writes:

> Hi guys, im just new in this forum. Im looking info about Power Over
> Ethernet. It would be great if someone will give me a link for this.
> I wanted to know . . . 
> 
> 1. What's with this technology? 

Nowadays standardized and starts to be pretty widely supported by devices. 

Proprietary implementations that were used earler are going out. 

> 2. Will this boom in the market?

I don't know. Maybe at least some small boom. 

> 3. Pros and cons.

Pros: 
Can supply power though same wiring as Ethernet signal to 
power devices like IP phones, WLAN access points etc.. 
Less wiring needed for those devices (just net cable), 
possibly for easier power backup systems (PoE powered WLAN 
stations receiver power from one point from switch, just put 
UPS/generator there and you whole wireless network infrastructure 
does not stop if mains power goes out).

Cons: 
Switches that can supply power tend to be quite expansive. 


More information on power over ethernet system can be found at
http://www.epanorama.net/links/tele_lan.html#poe

-- 
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at 
http://www.epanorama.net/