[SI-LIST] Re: Home-brewed Power-Over-Ethernet? OT?
- From: "Gupta, Anurag x4500" <agupta@xxxxxxxxxxxxxxxxxxx>
- To: "'steven@xxxxxxxxxxxxxxxxxxxx'" <steven@xxxxxxxxxxxxxxxxxxxx>,SI-List <si-list@xxxxxxxxxxxxx>
- Date: Thu, 21 Nov 2002 09:51:06 -0800
Hi Steve,
I have seen this on Voip phones and similar devices....
The relevant standard for this is IEEE 802.3af.
Following is link to a company that makes this kind of stuff.....
http://www.red-hawk.com/products/copper/network/network_product.htm#power
<http://www.red-hawk.com/products/copper/network/network_product.htm#power>
For home brew applications - you should be OK
Anurag Gupta
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx@ROCKWELLCOLLINS On Behalf
Of "Steven Kan" <steven@xxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, November 21, 2002 9:13 AM
To: SI-List
Subject: [SI-LIST] Home-brewed Power-Over-Ethernet? OT?
I use an Apple Airport Base Station (802.11b access point)
in my home, and I
want to position it more centrally. In order to mount it on
the ceiling
where I want it, I'll have to run Ethernet from the hub and
run power from
the wall.
Can I run DC over the unused pairs of the Ethernet cable? Or
would the noise
from the switching adapter cause problems? The adapter is a
pretty
generic-looking wall-wart, and cable would be unshielded,
solid-core CAT5.
The Ethernet is slow Ethernet (10 Mbps), and I'd be running
it about 30
feet.
Ethernet uses two of the four pairs in the CAT5, and I could
wire the
remaining pairs in whatever way would be best. Any
suggestions? Thanks!
--
Steven Kan
Pulse Research Lab
The Quickest Way To Go Fast
(310) 515-5330
mailto:steven@xxxxxxxxxxxxxxxxxxxx
http://www.pulseresearchlab.com
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