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 E3s are in a STM-1?
A STM-1 carries 3 E3s, per ITU-T G.707.
3
E3s in a STM-1
Working
STM-1 → 3 × E3
- 3 × E3 in each STM-1 ITU-T G.707Three VC-3s, each carrying an E3.
- 3 E3s
Leftover capacity
52.416 Mbit/s of each STM-1 line rate (155.520 Mbit/s) sits outside 3 × 34.368 Mbit/s of E3 line rate (103.104 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.
By bit rate only
Dividing the line rates gives 4.52, which floors to 4 E3s by bit rate only. The standard mapping is 3. Use the mapping.
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