Sounds as if your wiring from the demarc to your equipment is rather long.
Many folks use Cat5 cable for these connections. If you suspect that you are
picking up interference locally then a possible solution is a shielded pair
wire called something like t-shield that is designed to protect such
connections. Ground the shield at one end only.
> -----Original Message-----
> From: John Neiberger [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, June 27, 2000 12:05 PM
> To: [EMAIL PROTECTED]
> Cc: Dingeldey, Michael
> Subject: RE: Slightly OT: Telco Line Problems
>
>
> My guess is that yest, it is the fault of USWorst, but proving it is
> difficult in this case. :-(
>
> The demarc is on the second floor of a supermarket on one side of the
> building, while the extended demarc is on the bottom floor,
> opposite side of
> the building. LBO is set to 0db. Perhaps I should change
> this? That is
> one option that hadn't occured to me yet. If that were the
> case, though,
> wouldn't be experience problems all the time? Hmm...if the signal is
> getting dangerously low, I suppose if there were some sort of
> intermittent
> interference in the building, that might cause the symptoms we're
> experiencing. Food for thought!
>
> Thanks for the tips!
>
> John Neiberger, CCNA/CCDA
>
> > Hmm.... and it's not the fault of USWorst?
> >
> > A couple of things come to mind -
> > You may in fact have a bad CSU; can you replace it with
> another unit
> > and see what happens? How far are you from your demarc
> (where the line
> > enters the building)? And how is your line build-out set?
> Are you running
> > hot?
> >
> > BTW - what haven't they replaced? I have had arguments in the past
> > with Telcos and providers who swear that their equipment
> is not at fault.
>
> > Once they finally replace their equipment (usually their
> line interface),
> > everything works fine.
> >
> > HTH - that's my $.02
> >
> > Mike Dingeldey
> >
> > -----Original Message-----
> > From: John Neiberger [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, June 27, 2000 12:11 PM
> > To: [EMAIL PROTECTED]
> > Subject: Slightly OT: Telco Line Problems
> >
> >
> > We are having some odd line problems at one of our
> branches that none of
> us
> > have been able to figure out so I thought I'd throw this
> one out to the
> > group.
> >
> > From time to time, sometimes many weeks in between events,
> our csu/dsu
> > begins to report OOF and AIS (T1 yellow alarm) errors, but
> the line will
> > stay up for a while. Then, at some point, we'll get a T1
> red alarm and
> the
> > circuit will die. We call USWest who then tests the line.
> According to
> > them, they've replaced just about everything between the CO and our
> > location, and the line tests clean. Friday it was
> bouncing every 30-60
> > seconds so we had them test it again. Since the test, it
> has been error
> > free but they claim not to have discovered any problems.
> >
> > This is the endless cycle so far: the line dies, they
> test, they report
> no
> > problems, line mysteriously works fine after test for a
> several weeks,
> the
> > line has problems, the line dies, they test...etc.
> >
> > My only remaining guesses are these two: bad csu/dsu that
> isn't bad all
> the
> > time, or intermittent problems at the location (we share
> it with a very
> > large supermarket.)
> >
> > Any thoughts?
> >
> > TIA,
> > John Neiberger, CCNA/CCDA
> >
> >
> >
> >
> >
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