| European | Speed | Equals |
| E0 | 64 Kbit | 1 E0 |
| E1 | 2.048 Mbit | 32 E0 |
| E2 | 8.45 Mbit | 128 E0 |
| E3 | 34 Mbit | 16 E1 |
| E4 | 140 Mbit | 64 E1 |
| North American | Speed | Equals |
| T0 / DS0 | 64 Kbit | 1 DS0 |
| T1 / DS1 | 1.54 Mbit | 24 DS0 |
| T2 / DS2 | 6.3 Mbit | 96 DS0 |
| T3 / DS3 | 44.8 Mbit | 28 DS0 |
| SDH | SONET | Speed |
| - | OC1 | 51.84 Mbit |
| STM1 | OC3 | 155.52 Mbit |
| STM4 | OC12 | 622.08 Mbit |
| - | OC24 | 1244.14 Mbit |
| STM16 | OC48 | 2488.32 Mbit |
| STM64 | OC192 | 9953.28 Mbit |