NEC SV8500 Operation And Maintenance Manual - 33-C: Sdt Alarm Trouble

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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