Re: (PM) loss of sync
Kyle Platts (kwplat1@uswest.com)
Mon, 24 May 1999 09:30:24 -0500
Jeremy Malli wrote:
>
> I've had a ticket concerning LOS open for over 7 months now with US West.
> Have had them replace the housing the NI's are in, grounded the housing,
> checked for floating grounds, swapped chassis's, swapped cabling, inspected
> the HDSL span, checked the NI's for old firmware, new firmware, check the
> network clock, talk to ADC/Kentrox, checked problem reports from other
> areas, etc.
>
> We actually did repair one of them (1 down, 21 to go). The strange thing
> about this is that the DSL span wasn't pulling any errors, so the physical
> link was working correctly; it ended up that the dsl card in the CO was
> placed next to a repeater card or something of that nature and that
> adjacency was causing the errors (LOS) on the T1 portion of the span. We
> are moving our DS1 spans over to a DS3 and are then going to break them out
> (it's cheaper, cleaner, etc) Hopefully that will make this all go away.
>
> If you know the local CO tech it helps a great deal...
>
> Jeremy Malli
> Visionary Communications, Inc.
> > You too??? I've had a ticket open since the 30th of Apr. I'll have to
> > make a note of this :)
> >
> > Dave
> >
> > At 08:47 AM 5/21/99 -0700, you wrote:
> > >Two of my spans are clear, the other two experience about
> > >1 loss of sync/yellow alarm per day. US West shrugs.
> > >
> > >Don
> > >
> > >On 5/21/99, at 11:22 AM, Eric Scallin wrote:
> > >
> > >>On my PM3, I'm seeing a loss of sync on average of 1 per day. Is this
> > >>extreme?
> > >>
> > >>What is everyone else's average?
Attention!!
Anyone in U S WEST that is having this problem and happens to be on
HDSL, please contact me with the circuit ID's. There is a known bug with
the ADC HDSL remote cards that causes the loss of sync on the PM3. We
have worked with ADC and found the fix.
Thanks
--
Kyle Platts
Network Engineer
!NTERPRISE Networking Services
U S WEST Communications
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