Chapter 4. Status
4-2 MX2800 User Manual 61200290L1-1
State
Displays the current condition of the network. Possible conditions
are listed in the following chart:
Alarm
This field displays the current alarm condition of the MX2800.
Possible conditions are given in the following chart:
Condition Description
Normal The MX2800 is ready to pass data.
Alarm The unit is currently receiving an alarm indica-
tion. Alarm types are discussed in the following
section,
Alarm
.
In Test The unit is currently in test mode. See
Diagnos-
tics
on page 6-1 for information on the test type.
Condition Description
Normal No alarms are currently being received.
RAI
(remote alarm
indication)
The unit is receiving an RAI (yellow) alarm from
the network. This alarm is a signal sent back to-
ward the source of a failed transmit circuit. The X-
bits (X1 and X2) are set to zero.
LOS
(loss of signal)
The unit has lost the Rx signal.
AIS
(alarm
indication
signal)
The unit is receiving an AIS (blue) alarm condi-
tion from the network. AIS alarms occur when
consecutive 1010s are received in the informa-
tion bits. This indicates that there is a transmis-
sion fault located either at or upstream from the
transmitting terminal.
LOF
(loss of
framing)
The unit detects a framing loss from the network.
Excessive
CV
The unit is receiving excessive code violations
from the network, exceeding the threshold set by
the user (see
XCV Threshold
on page 3-4).
To Next Page
Loading...
