Verilink AS2000: The Basics (880-502981-001) Product Manual - Manual (Page 87)

Monitoring and Troubleshooting
Verilink Access System 2000: The Basics 5-21
• The application module cannot frame up on the equipment
signal (LOF condition).
• Detection of a Yellow Alarm.
• LOS, low ones-density, or excessive frame-bit error detection
in the incoming signal.
Check the operation of the equipment connected to the application
module. Check the cabling from the equipment to the rear
connector module.
If the application module can not frame up on the signal from the
equipment, verify that the local and far-end application modules
are configured correctly. If the application modules are configured
correctly, troubleshoot the local equipment.
The Stat LED indicates the current application module status. The
Stat LED is green or not illuminated during normal application
module operation (if the application module is not accessed by an
operator and is not in an alarm state).
If the Stat LED is red, and the Equipment (EQPT) or Net LEDs are not,
the application module alarm condition is cleared, but the BER, ES,
ES-L, or UAS thresholds have not been cleared. The STAT LED will
go out after 15 minutes, and will pass with no new alarm
conditions.