NEC NDA-24300 manual 33-C, SDT Alarm Trouble

Models: NDA-24300

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33-C

SYSTEM MESSAGES

SDT Alarm Trouble

Default Alarm:

Default Grade:

Grade Modified:

Lamp Modified:

MN

3

 

 

 

 

 

 

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 [33-E] message).

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

MG (Module Group)

 

 

 

b7:

0/1 = Even-number MG/Odd-number MG

b7

 

 

 

 

 

 

 

b0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Details on alarm

 

 

 

 

b4, b3

b2-b0

 

 

 

b7

 

 

b4

b3

b2

b1

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=No. 0 System/No.1 System

Note: Fault repair procedure on each alarm is shown on the next page.

NDA-24300

SDT Card

Trouble

52M Interface

Alarm

VC-11 Path

Trouble

Note

CHAPTER 3

Page 233

Issue 1

Page 260
Image 260
NEC NDA-24300 manual 33-C, SDT Alarm Trouble