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-1s are in a STM-4?
A STM-4 carries 4 STM-1s, per ITU-T G.707.
4
STM-1s in a STM-4
Working
STM-4 → 4 × STM-1
- 4 × STM-1 in each STM-4 ITU-T G.7074 × STM-1.
- 4 STM-1s
Leftover capacity
0 bit/s of each STM-4 line rate (622.080 Mbit/s) sits outside 4 × 155.520 Mbit/s of STM-1 line rate (622.080 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
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