Looks like you can pull some pretty valuable info out of your CSU card.

How often are you getting the line code violations?

How long did it take to reach the count you're showing?

There could be a mux mis-optioned some place, but I would think you'd also get bit errors.

If there is a mux mis-optioned it should show up when Telco does an all zero's test. Bad repeater should show up on an all one's test.

Retired phone dude