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 ODU1s are in an ODU4?
An ODU4 carries 40 ODU1s, per ITU-T G.709.
40
ODU1s in an ODU4
Working
ODU4 → 40 × ODU1
- 40 × ODU1 in each ODU4 ITU-T G.70940 ODU1s, two slots each.
- 40 ODU1s
Leftover capacity
4.843440775 Gbit/s of each ODU4 line rate (104.794445815 Gbit/s) sits outside 40 × 2.498775126 Gbit/s of ODU1 line rate (99.95100504 Gbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
By bit rate only
Dividing the line rates gives 41.93, which floors to 41 ODU1s by bit rate only. The standard mapping is 40. Use the mapping.
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