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Adtran MX2800 M13 User Manual

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61200290L1-1G
Section 4, Status
MX2800 M13 Multiplexer User Manual
State
This field displays the current condition of the network. Possible conditions are listed in 
Alarm
This field displays the current alarm condition of the MX2800. Possible conditions are given in 
.
Table 4-1.  Network State Conditions
Condition
Description
Normal
The MX2800 is ready to pass data.
Alarm
The unit is currently receiving an alarm indication. For alarm types, refer to the 
In Test
The unit is currently in test mode. Refer to 
 for information 
on the test type.
Table 4-2.   Alarm Conditions
Condition
Description
Normal
No alarms are currently being received.
RAI
The unit is receiving an RAI (yellow) alarm from the network. This alarm is a sig-
nal sent back toward the source of a failed transmit circuit. The X-bits (X1 and X2) 
are set to zero.
LOS
The unit has lost the Rx signal.
AIS
The unit is receiving an AIS (blue) alarm condition from the network. AIS alarms 
occur when consecutive 1010s are received in the information bits, indicating that 
there is a transmission fault located either at or upstream from the transmitting ter-
minal.
LOF
The unit detects a framing loss from the network.
XCV 
The unit is receiving excessive code violations from the network, exceeding the 
threshold set by the user. For more information, refer to 
TLOS
The transmitter has failed.
Idle
The unit detects an idle sequence from the network.