I read you original post and just kinda scratched my head. But now that
Teunis brought up the building wiring I remember a colleague with the same
problem that boiled to an oxidized terminal block in the damp basement of
his building.
Tim
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Tony van Ree
> Sent: Tuesday, March 06, 2001 11:06 PM
> To: Stephen Robichaud; [EMAIL PROTECTED]
> Subject: Re: CRC errors on ISDN Interface
>
>
> Hi,
>
> There are several places this can break. IF the line tests ok I
> can understand this.
>
> Here is a couple of things you might look at.
>
> Are the CRC's seen on both ends of the link. (If so then there
> is a chance it is on the line side)
>
> If not then almost certainly the problem will be at the end with
> the CRC's between the NT1 and the router. My experience has been
> most often this is a cable and/or the comb in the RJ45 socket.
>
> Another common problem is dry joints in the building wiring.
> Often these are not picked up in tests as the voltages used by
> test equipment 'blows trhe dust out'. In one case I had it was
> indeed water.
>
> We are really trying to identfy is it in the two wire cct between
> the sites or the 4 wire cct within a site.
>
>
> Just some thoughts.
>
> Teunis
> Hobart, Tasmania
> Australia
>
>
>
> On Tuesday, March 06, 2001 at 01:38:35 PM, Stephen Robichaud wrote:
>
> > I have a problem with an ISDN circuit that keeps on dropping
> off. When I
> > look at the BRI interface I see CRC errors. I have swapped out
> the patch
> > cable going to the providers jack, I swapped out the router and
> the ISDN WIC
> > but I still keep on getting the CRC errors. The provider has
> checked the
> > line and they said the line is ok. This router keeps on
> dropping off and the
> > customer is now getting upset. Any idea have any ideas what I
> can check or
> > try next?
> >
> > Thanks
> >
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