Monitoring the DSU/CSU
4-12
7110-A2-GB20-00
June 1997
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
Health and Status Messages,
Table 4-2
.
Alarm:
ON – DSU/CSU has detected an alarm
condition on the received network
signal. Refer to
Troubleshooting
in
Chapter 6
.
EER – Excessive Error Rate:
ON – The EER threshold has been
exceeded on the network
interface. Refer to
Health and
Status Messages
,
Table 4-2.
