Page 1114 - 5G Basics - Core Network Aspects

2 Transport aspects

Table 7-7 – ODTU payload bandwidth (kbit/s)
ODTU payload
ODTU type ODTU payload nominal bandwidth
bit-rate tolerance
ODTU01 (1904 + 1/8)/3824  ODU1 bit rate
ODTU12 (952 + 1/16)/3824  ODU2 bit rate
ODTU13 (238 + 1/64)/3824  ODU3 bit rate

ODTU23 (952 + 4/64)/3824  ODU3 bit rate
20 ppm
ODTU2.ts ts  476/3824  ODU2 bit rate
ODTU3.ts ts  119/3824  ODU3 bit rate
ODTU4.ts ts  47.5/3824  ODU4 bit rate
ODTUCn.ts ts  190.4/3824  ODUCn bit rate/n

Minimum Nominal Maximum

ODTU01 1 244 216.796 1 244 241.681 1 244 266.566
ODTU12 2 498 933.311 2 498 983.291 2 499 033.271
ODTU13 2 509 522.012 2 509 572.203 2 509 622.395
ODTU23 10 038 088.048 10 038 288.814 10 038 489.579
ODTU2.ts ts  1 249 384.632 ts  1 249 409.620 ts  1 249 434.608
ODTU3.ts ts  1 254 678.635 ts  1 254 703.729 ts  1 254 728.823

ODTU4.ts ts  1 301 683.217 ts  1 301 709.251 ts  1 301 735.285
ODTUCn.ts ts  5 240 781.554 ts  5 240 886.372 ts  5 240 991.189
NOTE – The bandwidth is an approximated value, rounded to 3 decimal places.

Table 7-8 – Recommended ODUflex (GFP) bit rates and tolerance

ODU type Nominal bit-rate Tolerance

ODU2.ts(Note 1) 1'249'177.230 kbit/s

ODU3.ts(Note 1) 1'254'470.354 kbit/s

ODU4.ts(Note 1) 1'301'467.133 kbit/s
ODUflex(GFP) of n 1.25G tributary slots, 1  n  8 n  ODU2.ts 100 ppm

ODUflex(GFP) of n 1.25G tributary slots, 9  n  32 n  ODU3.ts 100 ppm
ODUflex(GFP) of n 1.25G tributary slots, 33  n  80 (Note n  ODU4.ts 100 ppm
2)
NOTE 1 – The values of ODUk.ts are chosen to permit a variety of methods to be used to generate an ODUflex(GFP) clock. See
Appendix XI for the derivation of these values and example ODUflex(GFP) clock generation methods.
NOTE 2 – Transport of packet clients via an ODUflex(GFP) is specified up to 100 Gbit/s.

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