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Date:      Fri, 9 Oct 1998 15:59:01 -0600 (MDT)
From:      Doug Russell <drussell@saturn-tech.com>
To:        Steve Kaczkowski <steve@inc.net>
Cc:        Kevin Lam <kevla@studentmail.dis.unimelb.edu.au>, freebsd-isp@FreeBSD.ORG
Subject:   Re: FreeBSD & DSL technology
Message-ID:  <Pine.BSF.3.96.981009155223.10299A-100000@calvin.saturn-tech.com>
In-Reply-To: <361E49BC.F6132AEA@inc.net>

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On Fri, 9 Oct 1998, Steve Kaczkowski wrote:

> > Does the PairGain unit use standard phone wiring or does it require special
> > wiring on the part of the telco?
> > 
> 
> Well, standard DRY copper, no coils or anything like that. Any flavor of
> xDSL that you go with is going to require the same thing, dry pairs with
> NOTHING on them (no coils,voltage,etc)..

Additionally, you often have to look out for bridged taps.  The lower
speed xDSL (or DSL-like) products often tolerate them, but must full rate
DSL requires a bundle without them to be used, or for them to be removed.

Removing them gets tricky sometimes.  For example, there is one area of
Calgary that is soooo funky, the TELCO has NO idea what is going on with
the cables in the area.  There are bridged taps all over the place, but
nobody knows where... and half the wires run under/over/around a large
shopping mall, and two main roads which intersect there.  Basically,
NOTHING except voice lines is available in that whole area.  :)

OTOH, just about everywhere else in town works, at least for the "last
mile".  I'm having a devil of a time trying to get them to admit that they
have pairs leaving downtown towards the exhange my house is on.  grrrr

How can you tell I'm currently battling the TELCO over dry copper?  :)

Later......						<Doug>



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