C Sdt Alarm Trouble - NEC Univerge SV8500 Operation And Maintenance Manual

33-C: SDT Alarm Trouble
Default Alarm
MN
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]).
1: XXXX 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
1 2
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
1
Module Group (MG)
b7
2
Details on alarm
b7 b4 b3
See Fault Repair procedure on each alarm.
Note:
Default Grade
3
b7:
b0
b4, b3
0 0
b2 b1 b0
0 0
0 0
0 0
0 0
0 1
0 1
0 1
0 1
0 1
0 1
0 1
1 0
1 0
1 0
1 0
1 0
1 0
b7:
Grade Modified
0/1 = Even-number MG/Odd-number MG
b2-b0
0 0 0
0 0 1 Hardware Failure
0 1 0 Optical Line Failure
0 1 1 Onboard Power Alarm
1 0 0 Abnormal MB Key Operation
0 0 0
0 0 1 PCM Loss
0 1 0 Frame Alignment Loss
0 1 1 Receiving Section Failure
1 0 0 Mistake Rate Degradation
1 0 1 Sending Section Failure
1 1 0 Mistake Detection
0 0 0
0 0 1 Receiving Path Failure
0 1 0 Pointer Failure
0 1 1 Sending Path Failure
1 0 0 Receiving Path Error
1 0 1 Sending Path Error
SDT Card Status
0/1=System 0/System 1
– 440 –
CHAPTER 3 System Messages
Lamp Modified
SDT Card
Trouble
52M Interface
Alarm
VC-11 Path
Trouble
Note