#show controllers t1
T1 1/0 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
Description: Voice PRINo alarms detected.
alarm-trigger is not set
Version info Firmware: 20010629, FPGA: 15
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (185 seconds elapsed):
4503 Line Code Violations,
3901 Path Code Violations
0 Slip Secs,
0 Fr Loss Secs,
184 Line Err Secs,
3 Degraded Mins
183 Errored Secs,
182 Bursty Err Secs,
1 Severely Err Secs,
0 Unavail Secs
Total Data (last 24 hours)794073 Line Code Violations,
710946 Path Code Violations,
0 Slip Secs,
0 Fr Loss Secs, 4
7624 Line Err Secs,
974 Degraded Mins,
47598 Errored Secs,
45475 Bursty Err Secs,
34 Severely Err Secs,
Looking at the current 15 minute period captured by issuing the show controllers command, there are a large number of Path Code Violations (PCVs) and Line Code Violations (LCVs) and corresponding errored and bursty errored seconds.
Ensure that the line code type matches that of the carrier. To change the line code type, issue the linecode command on the controller. For more information on resolving the digital line, refer to T1 Error Events Troubleshooting.
In rare cases, these problems can also occur when a short cable (50 feet or less) is used to connect to the next device. With short cables, the Line Interface Unit (LIU) receiver may be saturated and result in LCVs. This is particularly true if the LIU receiver is overly sensitive to a far-end equipment's transmitted signal. In these cases, change the line buildout with reference to the cablelength long section of T1/E1 Controller Commands.
If these actions do not resolve the problem, try replacing the cable and gateway hardware.
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