The only errors that I get on the T1 controller are these numerous line code violations, and on the corresponding serial0/0/0:23 I get a lot of input CRC errors. No output errors.
The configuration is pretty generic: primary-ni switch type, B8ZS and ESF. Clocking for the single T1 is the line.
I've already replaced the cables and VWIC. The telco states loopback tests clean to the CSU/DSU. Below is the show controller output:
T1 0/0/0 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20051006, FPGA: 20, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (666 seconds elapsed):
0 Line Code Violations, 322 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 11 Degraded Mins
265 Errored Secs, 33 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
I would appreciate any direction for my next steps. Thanks!