Verilink HDM 2182 (880-502925-001) Product Manual - Manual (Page 78)

Troubleshooting
6-8 Verilink HDM 2182 User Manual
Far-End Alarms The following far-end alarms are detected and reported:
FEBE Far End Block Error
FEAC DS3 Equipment Failure (SA)
FEAC DS3 LOS/HBER
FEAC DS3 OOF
FEAC DS3 AIS Received
FEAC DS3 IDLE Received
FEAC DS3 Equipment Failure (NSA)
Common Equipment Failure (NSA)