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6-3
Cisco AS5350 and Cisco AS5400 Universal Gateway Card Installation Guide
78-13311-01
Chapter 6 Troubleshooting
LEDs
Ta b l e 6 - 1 L E D s
DFC LED State Description
T1 or E1 DFC ACTIVITY (ACT) Fast flicker (Green) Indicates DFC is up and running.
Slow flicker (Green) Indicates DFC is not yet fully
functional.
OK/MAINT Green The T1 or E1 DFC has passed initial
power-up diagnostics tests and is
operating normally.
Yellow The T1 or E1 DFC is not functioning.
See the console for messages.
Off Indicates that all calls associated
with the card are shut down and it is
safe to remove the card with the
system powered on.
Remote Alarm
(RA), Local Alarm
(LA), or Loopback
(LB)
On (Yellow) One LED below each T1/E1 port
indicates one of the following:
• A local or remote loopback
diagnostic test is running on the
associated T1 port.
• An alarm is received on the
associated T1/E1 port, indicating
loss of signal (LOS) or loss of
multiframe alignment (LOF) at
the local or remote node.