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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