Result: standard mapping
How many E2s are in an E3?
An E3 carries 4 E2s, per ITU-T G.702.
4
E2s in an E3
Working
E3 → 4 × E2
- 4 × E2 in each E3 ITU-T G.702Four E2s.
- 4 E2s
Leftover capacity
576 kbit/s of each E3 line rate (34.368 Mbit/s) sits outside 4 × 8.448 Mbit/s of E2 line rate (33.792 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.