| Class | Speed |
|---|---|
| T0 or DS0 | 56 Kbps or 64 Kbps |
| T1 | 1.5 Mbps |
| T3 | 45 Mbps |
remainder are optical |
|
| OC1 | 52 Mbps |
| OC3 | 155 Mbps |
| OC12 | 622 Mbps |
| OC48 | 2.5 Gbps |
| OC192 | 10 Gbps |
| OC768 | 40 Gbps |
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Last revised: 29 August 2004.