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132
A
A: T
PPENDIX
ROUBLESHOOTING
Errors Indicated by
the WAN LEDs
This section describes how the WAN LEDs indicate errors on systems
using ISDN or CSU/DSU connections.
WAN
(CSU/DSU)
Line
Act
Line
Amber
Error
Meaning:
Indicates a loss of signal, possibly due to a disconnected
cable.
Action:
Check all cable connections.
WAN
(CSU/DSU)
Line
Act
Line
Error
Meaning:
An error in received frames has been detected on either
channel B1 or channel B2.
B2
B1
Link
Connect
Fault
B2
B1
Link
Connect
Fault
Amber
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Troubleshooting
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