Your LBO should be set to 0db. Do not change that. Put a line loop up on
your csu/dsu and test to that. If you run patterns to the loop clean, then
you likely have a good csu. If you are not comfortable testing your csu,
swap it out and use a new one. What kind of are you using? It sounds as
if there might be some misoptioning on some equipment somewhere - could be
in telco land. Ask telco how provisioning designed the ckt. Is it optioned
esf/b8zs, d4/b8zs, esf/ami, etc.
Makeeda
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> John Neiberger
> Sent: Tuesday, June 27, 2000 1:05 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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>
>
>
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