my router is coonected to the pabx thru e1. Iam suddenly getting the below output of my sh controller e1 0/0/0
sh controllers e1 0/0/0
E1 0/0/0 is down.
Applique type is Channelized E1 - balanced
Far End Block Errors Detected
Transmitter is sending remote alarm.
Receiver has loss of frame.
alarm-trigger is not set
Version info Firmware: 20090113, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (218 seconds elapsed):
3769310 Line Code Violations, 30126 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 218 Unavail Secs
HOW WILL I KNOW WHICH ONE IS FAULTY? MY E1 OR THE PABX E1?