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The following alarm counts are provided in this menu:
Condition
LOS
LOF
AIS
RAI
IDLE
.an
The count given reflects the number of times the alarm or state has occurred
(rather than the number of seconds the alarm was active).
61200290L1-1
Description
Number of times the unit has lost the receive sig-
nal.
Number of times the unit has detected a loss of
framing from the network.
Number of times the unit has received an AIS
(blue) alarm condition from the network. AIS
alarms occur when consecutive 1010s are re-
ceived in the information bits. This indicates that
there is a transmission fault located either at or
upstream from the transmitting terminal.
Number of times the unit has received an RAI
(yellow) alarm from the network. This alarm is a
signal sent back toward the source of a failed
transmit circuit. The X-bits (X1 and X2) are set to
zero.
Number of times the unit has detected an idle se-
quence from the network.
Figure 5-3. DS3 Current Alarm Count Screen
MX2800 User Manual
Chapter 5. Statistics
5-3
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