134237746 Tu-Ais - Zte ZXMW NR8250 Manual

ZXMW NR8250 Alarm and Notification Handling Reference
Possible Causes
1. The signals sent from the upstream equipment to NR8250 equipment contains the
MS_AIS signal.
2. The RTU board that reports the alarm fails.
Handling Procedure
1. Check whether NR8250 upstream equipment detects the MS_AIS signal.
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If yes, it indicates that the upstream equipment is faulty. Remove the fault and
replace the faulty board.
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If no, go to step 2.
2. The alarm is caused by RTUB board failure. Replace the board.

2.2.13 134237746 TU-AIS

Alarm Property
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Alarm Code: 134237746
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Alarm Information: Tributary Unit Alarm Indication Signal (TU-AIS)
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Alarm Level: Major
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Alarm Type: Communications Alarm
Sub-code Description
Each subcode represents a timeslot. The former 63 timeslots are used for optical port
1,and the latter 63 timeslots are used for optical port 2.
Effect on the System
The receive signal transmitted on the SDH link is interrupted.
Possible Causes
1. The signals sent from the upstream equipment to NR8250 equipment contains the
TU_AIS signal.
2. The RTUB board that reports the alarm fails.
Handling Procedure
1. Check whether NR8250 upstream equipment detects the TU_AIS signal.
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Replace the faulty board.
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If no, go to step 2.
2. The alarm is caused by RTUB board failure. Replace the board.
SJ-20111008094748-008|2012–05–30 (R1.1)
If yes, it indicates that the upstream equipment is faulty. Remove the fault.
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