Result: standard mapping
How many STM-256s are in an ODU3?
An ODU3 carries 1 STM-256, per ITU-T G.709. This is a client mapping of STM-256 into ODU3.
1
STM-256 in an ODU3
Working
ODU3 → 1 × STM-256
- 1 × STM-256 in each ODU3 ITU-T G.709Client mappingCBR STM-256 mapped into OPU3.
- 1 STM-256
Leftover capacity
506.098983 Mbit/s of each ODU3 line rate (40.319218983 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.