(PM) Euro PRI issues with Worldcom solved...

Bert Driehuis (bert_driehuis@nl.compuware.com)
Tue, 02 Mar 1999 15:43:18 +0100

Thanks to your feedback Worldcom has been able to resolve the issues with
excessive CRC4 and E-bit errors I reported in this forum a few days ago.
It turned out to be a defective card in their switch, and I have learned a
lot in the process.

My special thanks goes to James Courtier-Dutton, whose succinct
description was the hammer I used to beat my telco engineers over the head
with:

> The CRC4 errors indicate that you are receiving Frames with errors in them.
> The E-Bits indicates that the other end is receiving errors from you.
> On a good line, you should get none of these.
> Normally the inward and outward data paths on ISDN30 PRI are down separate
> cables.
> So CRC4 indicates a bad link to you from the telco.
> E-Bits indicates a bad link from you to the telco.
> To get the telco to fix this would probably mean getting them to put a bert
> tester on the line for 24 hours, but, during this time, your line would
> problably be down.
> I would say this is a telco issue.

Cheers,

-- Bert

-- 
Bert Driehuis, MIS -- bert_driehuis@nl.compuware.com -- +31-20-3116119
The grand leap of the whale up the Fall of Niagara is esteemed, by all
who have seen it, as one of the finest spectacles in nature.
                -- Benjamin Franklin.
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