Asymmetric digital subscriber line ADSL standards ADSL standards

| Version | Standard_name | Common_name | Downstream_rate | Upstream_rate |
|---|---|---|---|---|
| ADSL2+ | ITU G.992.5 | ADSL2+ | 20.0 Mbit/s | 1.1 Mbit/s |
| ADSL2+ | ITU G.992.5 Annex M | ADSL2+M | 24.0 Mbit/s | 3.3 Mbit/s |
| ADSL2++ | (up to 3.75MHz) | ADSL4 | 52.0 Mbit/s ? | 5.0 Mbit/s ? |