Subject: RE: Cat 5 wiring
From: stephen king (sking@chartercollege.edu)
Date: Wed Sep 18 2002 - 12:15:34 AKDT
I've seen implementations of 10BaseT functioning properly with one wire =
per two drops. Wouldn't trust it to work at 100BaseT. Another thing =
you've gotta keep in mind, though, is that some systems (like Cisco's =
IPTelephony) expect to be able to use the other pairs for other things =
(like providing power to the end stations). Shortcutting the wiring =
would make it so that in the future you'd have to rewire in order to =
upgrade to those services.
Stephen
-----Original Message-----
From: Joshua J.Kugler [mailto:isd@as.uaf.edu]
Sent: Wednesday, September 18, 2002 12:06 PM
To: aklug@aklug.org
Subject: Re: Cat 5 wiring
On Wednesday 18 September 2002 00:02, Arthur Corliss wrote:
> Keep in mind that there's multiple 100bT specs: 100bT4 and 100bTX. =
The
> latter does only use two pair, the wiring diagram is the same for both =
in
> order to reduce cross-band interference.
Right.
> Now, I've never tried to put two 100Mbps circuits on one cable, but =
I'd be
> surprised if you didn't run the risk of considerable packet loss.
You probably would degrade quality quite a bit, yes.
--=20
Joshua Kugler, Information Services Director
Associated Students of the University of Alaska Fairbanks
isd@asuaf.org, 907-474-7601
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