Verilink DCSU 2911 (880-502647-001) Product Manual - Manual (Page 73)

Troubleshooting
Verilink DCSU 2911 User Manual 5-7
Data Port LEDs Data Port LEDs display alarm conditions detected at the data ports.
Data Port LEDs 1 and 2 display the status for their respective ports.
Table 5-3 Data Port LED Indicators
System LED The System LED displays node controller assignments and node
communication conditions.
Table 5-4 System LED Indicators
State Color Alarm Class Possible Error Condition
Solid Green All okay None. (DTE connected and in sync)
Solid Red Major Port active; Signal designated for LOS is not detected. For
example, if you have enabled DTR monitoring (to detect a Loss
of Signal) and you disconnect the cable, a major alarm is
declared.
Solid Amber Diagnostic
mode
Port is active and in loopback.
Off None None Port is not enabled.
State Color Alarm Class Possible Error Condition
Solid Green None Module is okay and another module is the shelf controller.
Solid Red Critical System failure. You may need to reseat the card in the shelf.
Off None None Module is not on; no power.
Flashing Green None The module is acting as the controller (that is, it is the shelf
master controlling the ACP bus usage in the shelf).