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-256s are in an OTU3?
An OTU3 carries 1 STM-256, per ITU-T G.709. This is a client mapping of STM-256 into ODU3.
1
STM-256 in an OTU3
Working
OTU3 → 1 × ODU3 → 1 × STM-256
- 1 × ODU3 in each OTU3 ITU-T G.709The OTU3 frame carries exactly one ODU3.
- 1 × STM-256 in each ODU3 ITU-T G.709Client mappingCBR STM-256 mapped into OPU3.
- 1 ODU3
- 1 × 1 = 1 STM-256
Leftover capacity
3.205293559 Gbit/s of each OTU3 line rate (43.018413559 Gbit/s) sits outside 1 × 39.813120 Gbit/s of STM-256 line rate (39.813120 Gbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
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