User`s manual

Chapter 4 Monitoring and Maintenance
83
Message Description Corrective Actions Type Class
M Multi-frames
defect
TX_LCAS_ADD_
NOR_timeout
Defect of RS_
NORMAL after
ADD
Informative alert Event
TX_LCAS_ADD_
ACK_timeout
Defect of RS_ACK
after ADD
Informative alert Event
Table 4-2 shows the alarm messages generated by the E1 module, specifies their
class (major or minor), type (alarm or performance monitoring), and explains their
meaning.
Table 4-2 E1 Alarm Messages
Message Description Corrective Actions Type Class
ET1_LOS Loss of Synchronous –
Local lost of multi-frame
synchronization alarm on
the specified link
1. Check cable
connections to the
link connector.
2. Check line
and/or other
communication
equipment
providing the link to
the specified E1
module.
3. Replace the E1
module.
Alarm Major
ET1_AIS E1 AIS Informative alert. Alarm Major
ES_QTR_TCA Error Seconds – Counting
Error Seconds over 15
-minute threshold.
Informative alert. P.M. Minor
SES_QTR_TCA Severely Error Seconds –
Counting Severe Error
Seconds over
15-minute threshold.
Informative alert. P.M. Major
UAS_QTR_TCA Unavailable Second –
Counting Unavailable
Second over 15-minute
Informative alert. P.M. Major