Quantity is how many containers you have. The result is how many tributaries fit, the path, and the leftover line rate. The choices stay in the URL, so you can share them.
Result: standard mapping
How many STM-4s are in an ODU0?
An ODU0 carries 1 STM-4, per ITU-T G.709. This is a client mapping of STM-4 into ODU0.
1
STM-4 in an ODU0
Working
ODU0 → 1 × STM-4
- 1 × STM-4 in each ODU0 ITU-T G.709Client mappingCBR STM-4 mapped into OPU0.
- 1 STM-4
Leftover capacity
622.080 Mbit/s of each ODU0 line rate (1.244160 Gbit/s) sits outside 1 × 622.080 Mbit/s of STM-4 line rate (622.080 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
By bit rate only
Dividing the line rates gives 2, which floors to 2 STM-4s by bit rate only. The standard mapping is 1. Use the mapping.
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