The two protocols below are standardized by the following:
SONET (Synchronous Optical Networking)/SDH (Synchronous Digital Hierarchy) Data Rates
| SONET Optical Carrier Level | SONET Frame Format | SDH level and Frame Format | Payload Bandwidth Kbps (kilo bits per second) | Line Rate Kbps (kilo bits per second) |
|---|---|---|---|---|
| OC-1 | STS-1 | STM-0 | 50,112 | 51,840 |
| OC-3 | STS-3 | STM-1 | 150,336 | 155,520 |
| OC-12 | STS-12 | STM-4 | 601,344 | 622,080 |
| OC-24 | STS-24 | – | 1,202,688 | 1,244,160 |
| OC-48 | STS-48 | STM-16 | 2,405,376 | 2,488,320 |
| OC-192 | STS-192 | STM-64 | 9,621,504 | 9,953,280 |
| OC-768 | STS-768 | STM-256 | 38,486,016 | 39,813,120 |
| OC-3072 | STS-3072 | STM-1024 | 153,944,064 | 159,252,240 |