NEC SV8500 Operation And Maintenance Manual - 13-O: Digital Line Failure

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CHAPTER 3

System Messages

13-O: Digital Line Failure

This message displays when a digital line failure occurs

.

Accommodated location

Kind of Fault

Default Alarm

Default Grade

Grade Modified

Lamp Modified

SUP

2

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

b6

b5

b4

b3

b2

b1

b0

b7

b4

b3

b2

b1

b0

1 2

b0-b4: Group number 

b5, b6: Unit (0-3)

b7:

MG number

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

1

b0-b4: Kind of Fault (HEX)

00 = -

01 = Frame alignment loss PCM down

02 = Bit error rate is over 10

-4

03 = Slip is detected 

04 = Opposite office alarm (AIS) is detected

05 = -

06 = Multi-frame alignment loss

07 = Frame alignment loss PCM down (continuously)

08 = Multi-frame alignment loss (continuously)

2