OC-1 STS-1
OC-1, also called STS-1, is the 51.840 Mbit/s SONET building block. The synchronous payload envelope is 50.112 Mbit/s. It holds one DS3, 28 VT1.5s (DS1), 21 VT2s (E1) or seven VT6s (DS2).
- Family
- SONET
- Line rate
- 51.840 Mbit/s51,840,000 bit/s
- Payload rate
- 50.112 Mbit/s50,112,000 bit/s
- Standard
- Telcordia GR-253
Same line rate as STM-0.
Contains breakdown, down to DS0 · Open in the converter
Direct mappings
| Contains | Count | Mapping | Source | Note |
|---|---|---|---|---|
| 1 DS3 | 1 | Tributary | Telcordia GR-253 | Asynchronous DS3 mapping into the STS-1 synchronous payload envelope. |
| 7 DS2s | 7 | Tributary | Telcordia GR-253 | Seven VT groups, one VT6 (DS2) each. |
| 28 DS1s | 28 | Tributary | Telcordia GR-253 | Seven VT groups × four VT1.5 (DS1). |
| 21 E1s | 21 | Tributary | Telcordia GR-253 | Seven VT groups × three VT2 (E1). |