NEC SV8500, Operation And Maintenance Manual

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CHAPTER 3 System Messages
33-C: SDT Alarm Trouble
This message displays when a grave failure occurs on the SDT (PA-SDTA/B) card. If this is issued, remember
the ACT/STBY change of the SDT card may be followed, as a result of fault detection in the optical fiber line
(see System Message [
33-E ]).
Module Group (MG)
Details on alarm
Note: See Fault Repair procedure on each alarm.
Default Alarm Default Grade Grade Modified Lamp Modified
MN 3
1: XXXX 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
4: 0000 0000 0000 0000 5: 0000 0000 0000 0000 6: 0000 0000 0000 0000
7: 0000 0000 0000 0000 8: 0000 0000 0000 0000 9: 0000 0000 0000 0000
b7 b0
b7 b4 b3 b2 b1 b0
1 2
b7: 0/1 = Even-number MG/Odd-number MG
1
b4, b3 b2-b0
0 0 0 0 0
0 0 0 0 1 Hardware Failure
0 0 0 1 0 Optical Line Failure
0 0 0 1 1 Onboard Power Alarm
0 0 1 0 0 Abnormal MB Key Operation
0 1 0 0 0
0 1 0 0 1 PCM Loss
0 1 0 1 0 Frame Alignment Loss
0 1 0 1 1 Receiving Section Failure
0 1 1 0 0 Mistake Rate Degradation
0 1 1 0 1 Sending Section Failure
0 1 1 1 0 Mistake Detection
1 0 0 0 0
1 0 0 0 1 Receiving Path Failure
1 0 0 1 0 Pointer Failure
1 0 0 1 1 Sending Path Failure
1 0 1 0 0 Receiving Path Error
1 0 1 0 1 Sending Path Error
b7: SDT Card Status
0/1=System 0/System 1
SDT Card
Trouble
52M Interface
Alarm
VC-11 Path
Trouble
Note
2