NEC SV8500 Operation And Maintenance Manual - page 347
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CHAPTER 3
System Messages
[50H] No Trunk Ineffective Hold
Routine Diagnosis
MG and Unit number of Trunk
Ineffective Hold
1:
50XX
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
1 2
[50H] No Trunk Ineffective Hold
1
b0:
Unit 0, Even-numbered MG
1 = No Trunk Ineffective Hold
b1:
Unit 1, Even-numbered MG
1 = No Trunk Ineffective Hold
b2:
Unit 2, Even-numbered MG
1 = No Trunk Ineffective Hold
b3:
Unit 3, Even-numbered MG
1 = No Trunk Ineffective Hold
b4:
Unit 0, Odd-numbered MG
1 = No Trunk Ineffective Hold
b5:
Unit 1, Odd-numbered MG
1 = No Trunk Ineffective Hold
b6:
Unit 6, Odd-numbered MG
1 = No Trunk Ineffective Hold
b7:
Unit 3, Odd-numbered MG
1 = No Trunk Ineffective Hold
2