Verilink DCSU 2911 (880-502647-001) Product Manual - Manual (Page 72)

Troubleshooting
5-6 Verilink DCSU 2911 User Manual
Interpreting Front Panel LEDs
The LED indicators on the front panel of the DCSU 2911 module
display errors caused by T1 line or data terminal equipment
problems. The errors are reflected in the alarm status and the
performance/status menus in the Craft interface. Node Manager
also has an alarm display.
There are five LEDs on the front panel:
• Two T1 port LEDs
• Two data port LEDs
• One system LED
Figure 5-2 DCSU Front Panel
Network Port
LEDs
The network port LEDs display minor, major, and critical alarm
conditions detected on the network line. Net LED 1 and Net LED 2
display alarm status for their respective network ports. Table 4-1
provides a brief description of the network port LED states:
Table 5-2 Network LED Indicators
MANAGEMENT
SYS
LOCAL
2
NET
DATA
1
2 1
DC SU
Port LEDs
System LED
PRI EXT
2911
State Color Alarm Class Action/Possible Error Condition
Solid Green All okay None
Solid Amber Diagnostic
mode with no
errors
None
Flashing Amber
and Red
Yellow Alarm Check the diagnostic performance status or alarm status
displays. The Yellow Alarm indicates that the unit is receiving
an RAI Signal, which indicates that the far end is not receiving a
signal from the near end.
Solid Red Major Check the performance status or alarm status display. Loss of
Signal (LOS) from far end transmits all-ones.
Off None None Port is not enabled.