Table 5-2. Ds3 State Conditions; Table 5-3. Ds3 Alarm Conditions; Ds3 State; State - ADTRAN MX2820 System Manual

DS3 State

State

This field displays the current state of the DS3 network for the specified M13 MUX module.
Table 5-2 lists the possible conditions.
Condition
Normal

Alarm

Test
Alarm/Test
Alarm
This field displays the current alarm condition for the M13 module.
possible alarm conditions.
Alarm (Condition)
None
RAI
LOS
AIS
LOF
XCV
TLOS
IDLE
61186003L1-1D

Table 5-2. DS3 State Conditions

Description
The MX2820 (M13 MUX module) is ready to pass data.
The unit is currently receiving an alarm condition.
alarms.
The unit is currently in test mode.
The unit is in an alarm condition and in test mode.

Table 5-3. DS3 Alarm Conditions

Description
No alarms are currently being received.
This M13 MUX module is receiving an Remote Alarm Indication (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.
The M13 MUX module has lost the Rx signal.
The M13 MUX module is receiving an Alarm Indication Signal (AIS)
(blue) alarm from the network. AIS alarms occur when consecutive
1010s are received in the information bits. This indicates there is a
transmission fault located either at the transmitting terminal or
upstream from the transmitting terminal.
This alarm condition indicates the M13 MUX module detects a fram-
ing loss from the network.
The M13 MUX module is receiving excessive code violations from the
network, which are exceeding the threshold set by the XCV Threshold
parameter.
The transmitter has failed. This alarm condition indicates a Tx loss of
signal.
The M13 MUX module detects an idle sequence from the network.
Service is immediately available for use.
Section 5, User Interface Guide - UIG-510, Status
Table 5-3
Table 5-3
lists the
lists the
5-21