Hi - I have an voice e1 interface having slipping error in Cisco 3845
voicegate-1#sh controller e1 0/0/1
E1 0/0/1 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20071011, FPGA: 13, spm_count = 0
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (751 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
37 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
37 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Could you point to the right direction to fix the issue?