Bruce N wrote:
Issue with a Bell PRI left me with few bad channels that I thought is never
possible with a digital link like PRI.
What's at the other end of the PRI?
The only things those alarm lights check are framing and bipolar
errors. They do not perform any data integrity checks. That's the
responsibility of the end devices. You can run Bit Error Rate Tests
(BERT) to verify the line is good. However, as you mentioned, line
problems should cause random noise. Noise on a specific channel would
indicate it's coming from the other end. Also, with a PRI, it's
entirely possible that the various channels may be connected to
different end points. Regardless, the switching equipment should be
transparent and not introduce any noise.
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