| optical carrier level | SONET (electrical level) | SDH (equivalent) | Link Rate(Mbps |
| OC-1 | STS-1 | - | 51.84 |
| OC-3 | STS-3 | STM-1 | 155.52 |
| OC-9 | STS-9 | - | 466.56 |
| OC-12 | STS-12 | STM-4 | 622.08 |
| OC-18 | STS-18 | - | 933.12 |
| OC-24 | STS-24 | - | 1244.16 |
| OC-36 | STS-36 | - | 1866.24 |
| OC-48 | STS-48 | STM-16 | 2488.32 |
| OC-96 | STS-96 | - | 4976.64 |
| OC-192 | STS-192 | - | 9953.28 |