Appendix D – SDH and PDH information
Acterna ANT-5 Page 133
12.3 SDH Tributary Numbering
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-12
1 1
3
21
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TUG-3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
VC#
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TUG-12
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-13
1
3
2
Tributary
Method
ITU-T
Method
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-12
1 1
3
21
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
TUG-3
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
VC#
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
TUG-12
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-13
1
3
2
Tributary
Method
ITU-T
Method
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-12
1 1
3
21
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
TUG-3
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
VC#
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
TUG-12
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
TUG-2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
TU-13
1
3
2
Tributary
Method
ITU-T
Method
12.4 SDH Anomalies and Defects
SDH Description Overhead Byte
LOS Loss of signal
TSE Test sequence error (bit error)
LSS Loss of Sequence Synchronisation
AIS Alarm indication signal
Regenerator Section
OOF Out of frame A1, A2
LOF Loss of frame A1, A2
B1 Regenerator section error monitoring B1
RS-TIM RS trace identifier mismatch J0
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