ADTRAN T3SU 300 User Manual Page 67

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Chapter 4. Status
61202217L1-1C T3SU 300 User Manual 67
Data Link State
This field displays the current state of the data link between the
local and the remote T3SU 300s. Possible states are listed in the
following chart:
Remote State
This field displays the current state of the remote link. Possible
states are listed in the following chart:
Condition Description
Normal The local unit’s data link is in sync with the remote unit.
Disabled The
DATA LINK option in the DS3 NETWORK
C
ONFIGURATION menu is set to DISABLED.
Down The local and remote units are not in sync.
Condition Description
Normal No alarms are currently being received.
RAI (Yellow
Alarm)
The unit is transmitting a 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.
LOS (Red
Alarm)
The unit has lost the Rx signal.
AIS (Blue
Alarm)
The unit is receiving a blue alarm condition from the
network. A blue alarm occurs when consecutive 1010s
are received in the information bits. This indicates that
there is a transmission fault located either at or
upstream from the transmitting terminal.
OOF The unit detects an out of frame condition from the
network.
Idle The unit detects an idle sequence from the network.
Service is immediately available for use.
Eqpt Fail (SA) The network has signaled a service affecting equipment
failure condition.
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