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Monitoring the DSU/CSU
6-4
7112-A2-GB20-20
March 1998
Network LEDs
SIG – Network Signal
ON – A recoverable signal is present on the
network interface.
OFF – The network signal cannot be recovered. A
Loss of Signal condition exists.
OOF – Out of Frame:
ON – An out of frame condition was detected
on the network interface. Refer to
Table 6-2, Health and Status Messages.
Alarm:
ON – DSU/CSU has detected an alarm
condition on the received network
signal. Refer to
Troubleshooting
in
Chapter 8.
EER – Excessive Error Rate:
ON – The EER threshold has been
exceeded on the network
interface. Refer to Table 6-2,
Health and Status Messages.