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Transport aspects 2

Table 7-3  OPU types and bit rates (end)

OPU type OPU payload nominal bit rate OPU payload bit-rate tolerance

NOTE 1 – The nominal OPU payload rates are approximately: 1 238 954.310 kbit/s (OPU0 Payload), 2 488 320.000 kbit/s (OPU1
Payload), 9 995 276.962 kbit/s (OPU2 Payload), 40 150 519.322 kbit/s (OPU3 Payload), 104 355 975.330 (OPU4 Payload), 10 356
012.658 kbit/s (OPU2e Payload),
n × 104 817 727.434 kbit/s (OPUCn Payload).
NOTE 2 – Refer to 12.2.6 for considerations on the values of "s".

Table 7-4  OTU/ODU/OPU frame periods

OTU/ODU/OPU type Period (Note)
ODU0/OPU0 98.354 μs
OTU1/ODU1/OPU1 48.971 μs
OTU2/ODU2/OPU2 12.191 μs
OTU3/ODU3/OPU3 3.035 μs
OTU4/ODU4/OPU4 1.168 μs
ODU2e/OPU2e 11.767 μs
OTUCn/ODUCn/OPUCn 1.163 μs
ODUflex/OPUflex CBR client signals: 121856/client_signal_bit_rate

GFP-F mapped client signals: 122368/ODUflex_bit_rate
IMP mapped client signals: 122368/ODUflex_bit_rate
FlexE-aware client signals: 122368/ODUflex_bit_rate
NOTE – The period is an approximated value, rounded to 3 decimal places.

Table 7-5 – OTL types and bit rates

OTL type OTL nominal bit rate OTL bit-rate tolerance
OTL3.4 4 lanes of 255/236 × 9 953 280 kbit/s
20 ppm
OTL4.4 4 lanes of 255/227 × 24 883 200 kbit/s
NOTE – The nominal OTL rates are approximately: 10 754 603.390 kbit/s (OTL3.4) and 27 952 493.392 kbit/s (OTL4.4).

Table 7-6  OPUk multiframe periods for 2.5G and 1.25G tributary slots and ODUCn multiframe periods
for 5G tributary slots

1.25G tributary slot 2.5G tributary slot multiframe 5G tributary slot multiframe
OPU type
multiframe period (Note) period (Note) period (Note)
OPU1 97.942 μs – –
OPU2 97.531 μs 48.765 μs –
OPU3 97.119 μs 48.560 μs –
OPU4 93.416 μs – –
OPUCn – – 23.251 μs

NOTE – The period is an approximated value, rounded to 3 decimal places.

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