3Com NETBuilder SI Using Manual - Wan
Other manuals for NETBuilder SI:
User Manual
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A
PPENDIX
A: T
ROUBLESHOOTING
Errors Indicated by
the WAN LEDs
This section describes how the WAN LEDs indicate errors on systems
using ISDN or CSU/DSU connections.
Meaning:
Indicates a loss of signal, possibly due to a disconnected
cable.
Action:
Check all cable connections.
Meaning:
An error in received frames has been detected on either
channel B1 or channel B2.
Connect
Fault
(CSU/DSU)
B1
Link
Line
Act
Line
Error
WAN
B2
Amber
Connect
Fault
(CSU/DSU)
B1
Link
Line
Act
Line
Error
WAN
B2
Amber