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 DS3s are in a STM-1?
A STM-1 carries 3 DS3s, per ITU-T G.707.
3
DS3s in a STM-1
Working
STM-1 → 3 × DS3
- 3 × DS3 in each STM-1 ITU-T G.707Three VC-3s, each able to carry a DS3.
- 3 DS3s
Leftover capacity
21.312 Mbit/s of each STM-1 line rate (155.520 Mbit/s) sits outside 3 × 44.736 Mbit/s of DS3 line rate (134.208 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
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