Figure 3-15 – ADTRAN MX2800 M13 User Manual
Page 74
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61200290L1-1G
Section 3, Configuration
MX2800 M13 Multiplexer User Manual
Figure 3-15.
Alarm Relay Configuration Menu
describes the alarm conditions found in the
Alarm Relay Configuration
menu.
Table 3-5. Types of Alarms in Alarm Relay Configuration
Alarm
Level
Description
DS3 Alarms
RAI
Critical
The unit is receiving 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.
AIS
Critical
The unit is receiving an AIS (blue) alarm from the network. This alarm
occurs when consecutive 1010s are received in the information bits,
indicating the fault lies at or upstream from the transmitting source.
LOS
Critical
The unit has lost the network Rx signal.
LOF
Critical
The unit detects a framing loss from the network.
XCV
Noncritical
The controller card is receiving code violations in excess of the user
specified threshold. Refer to
TLOS
Critical
The controller card transmitter has failed.
DS2 Alarms
RAI
Noncritical
The unit is receiving an RAI (yellow) alarm from the network across a
DS2. This alarm is a signal sent back toward the source of a failed trans-
mit circuit. The X-bits (X1 and X2) are set to zero.
AIS
Noncritical
The unit is receiving unframed all ones across a DS2.