E1 - RJ45 pinout with ethernet crossover cable

Alex Bligh alex at alex.org.uk
Fri Feb 25 15:32:21 UTC 2005




--On 25 February 2005 09:43 -0500 "Hannigan, Martin" 
<hannigan at verisign.com> wrote:

> Not that I know of, but I've never attempted what you
> describe. Putting the baluns in the loop will destroy the
> framing i.e. it's going to try and convert b8zs/ami to 802.x.

How does a balun destroy the framing (or rather line coding)? It's just a
pair of transformers, and hence AC characteristics pass through intact.
All you've done is converted impedance (and, IIRC, line voltage).

Alex



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