[lug] Line quality?

Dan Radom dradom at redback.com
Sun Feb 4 11:50:28 MST 2001


The only requirement that a LEC (local exchange carrier) has is to provide
dial tone and data communications of somewhere around 2400 bps.  Above and
beyond that is gravy.  They'll tell you your line tests fine, and that you
should replace your inside wiring.

Dan

-----Original Message-----
From: lug-admin at lug.boulder.co.us [mailto:lug-admin at lug.boulder.co.us]On
Behalf Of Matt Clauson
Sent: Sunday, February 04, 2001 11:44 AM
To: lug at lug.boulder.co.us
Subject: Re: [lug] Line quality?


On Sun, Feb 04, 2001 at 10:09:45AM -0700, Timothy C. Klein wrote:
> Tony,
>
> I think the telco is only, stritcly speaking, obligated to give you 1 POTS
> capable line.  That being said, it usually seems to me hit and miss about
> these.  If you get a friendly repair screener at Qwest (that's who it is,
> right?) they will send out a net tech to try and figure it out.  If the
> the screener is grumpy or a up-tight, they will tell you your modem
> connection speed is none of their problem if the voice is working.
>
> If you want to be really certain that someone comes out, you could say you
hear
> noise on the line, and that it causes problems.  Even if you don't, hear,
it is
> likely something is wrong with your line (grounded, unbalanced, crossed,
or
> something like that).  2400 is REALLY slow.  Now you do mean 2400 bps?  If
you
> mean 24000 bps, then I wouldn't be too optimistic about getting it fixed.
Those
> kinds of speeds often seem to be the result of Pair Gain (subcriber loop
> carrier, your POTS leaves the CO as digital, gets converted to analog at
your
> cross box.  Said D to A conversion is less then perfect for digital data
on your
> modem).  Or a UDC, which is similar, but only for your house.  In these
cases a
> nice net tech may try to give you a copper pair, but in Pair Gain cross
boxes
> they are often not available, or if they are they may be worse.

I need to backtrack this, because I dunno if it's legit...  However, I
could swear that a few years back, I read something that said that
telcos are required by FCC regs to provide a line that is at least DS0
(56k) capable...  And that's usually useful in helping turn up t1's
and stuff on dirty lines, since some specs are similar.

I'll see if I can find it again.

--mec
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