Page 1292 - 5G Basics - Core Network Aspects

2 Transport aspects

Column #
....... .......
1 14 15 16 17 3824 3825 4080
1 FA OH OTUk OH
Row # 2 ODUk OH OPUk OTUkV FEC Fixed stuff
(All-0s)
3
4
G.709-Y.1331(12)_FII.3

Figure II.3  OTUk with a smaller OTUkV FEC and the remainder
of an FEC area filled with fixed stuff

Column #
....... .......
1 14 15 16 17 3824 3825 x
1 FA OH OTUk OH
Row # 2 ODUk OH OPUk OTUkV FEC
3
4
G.709-Y.1331(12)_FII.4

Figure II.4  OTUk with a larger OTUkV FEC

Column #
....... .......
1 14 15 16 17 3824
1 FA OH OTUk OH
Row # 2 ODUk OH OPUk
3
4
G.709-Y.1331(12)_FII.5

Figure II.5  OTUk without an OTUkV FEC area

....... Column # .......
1 X 1 X + 1 X + X 2 X + X + 1 X + X + X 3
1
2
1
1
1
2
1
Row # OTUkV overhead OTUkV payload = ODUk OTUkV FEC
(Y X bytes)
(Y  X bytes)
1
3
Y
G.709-Y.1331(12)_FII.6
Figure II.6  OTUkV with a different frame structure
Column #
1 ....... X 1 X + 1 ....... X + X 2
1
1
1
Row # OTUkV overhead OTUkV payload = ODUk
(Y X bytes)
1
Y
G.709-Y.1331(12)_FII.7

Figure II.7  OTUkV with a different frame structure and without FEC area

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