Page 1295 - 5G Basics - Core Network Aspects

Transport aspects 2

Alignment

ODU0 OPU0 OH Client layer signal
ODU0 OH

2

Alignment

ODU1 OPU1 OH Alignment ODU0 OH OPU0 OH Client layer signal
ODU1 OH ODU0 OH OPU0 OH Client layer signal

NOTE 1 – The ODU0 floats in 1/2 of the OPU1 payload area. An ODU0 frame
will cross multiple ODU1 frame boundaries. A complete ODU0 frame (15296
bytes) requires the bandwidth of one TribSlot in (15296/7616) 2.008 ODU1
frames. This is not illustrated.

ODU1
with OPU1
tributary OPU1 OH TS1 TS2 TS1 TS2 ........................... TS1 TS2
slots ODU1 OH
TS1, TS2

NOTE 2 – The OPU1 OH contains 1 column of justification control and
opportunity overhead for each of the 2 tributary slots in a 2-frame multiframe
format. This is not illustrated.

G.709-Y.1331(12)_FIII.2

Figure III.2 – Example of multiplexing 2 ODU0 signals into an ODU1

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