Hi,
The VDSL2 standard defines a wide range of profiles. Profile comparison table:
| Profile | Bandwidth (MHz) | Number of total carriers | Maximum aggregate downstream transmit power (dBm) | Max. downstream throughput (Mbit/s) | Max. upstream throughput (Mbit/s) |
| 8a | 8.832 | 2048 | 17.5 | 50 | 16 |
| 8b | 8.832 | 2048 | 20.5 | 50 | 16 |
| 8c | 8.5 | 1972 | 11.5 | 50 | 16 |
| 8d | 8.832 | 2048 | 14.5 | 50 | 16 |
| 12a | 12 | 2783 | 14.5 | 68 | 22 |
| 12b | 12 | 2783 | 14.5 | 68 | 22 |
| 17a | 17.664 | 4096 | 14.5 | 100 | 50 |
| 30a | 30 | 3479 | 14.5 | 200 | 100 |
Abd the line attenuation (loss) and the corresponding attainable ADSL/ADSL2+ speeds:
| Line loss (dB) | Line length (km) | ADSL2/2+ speed (Mbps) | ADSL speed (Mbps) |
| 1 | 0.07 | 24 | 8 |
| 2 | 0.15 | 24 | 8 |
| 3 | 0.22 | 24 | 8 |
| 4 | 0.29 | 24 | 8 |
| 5 | 0.36 | 24 | 8 |
| 6 | 0.43 | 24 | 8 |
| 7 | 0.51 | 24 | 8 |
| 8 | 0.58 | 23.9 | 8 |
| 9 | 0.65 | 23.8 | 8 |
| 10 | 0.72 | 23.7 | 8 |
| 11 | 0.8 | 23.5 | 8 |
| 12 | 0.87 | 23.3 | 8 |
| 13 | 0.94 | 23 | 8 |
| 14 | 1.01 | 22.7 | 8 |
| 15 | 1.09 | 22.4 | 8 |
| 16 | 1.16 | 22.1 | 8 |
| 17 | 1.23 | 21.7 | 8 |
| 18 | 1.3 | 21.4 | 8 |
| 19 | 1.38 | 21 | 8 |
| 20 | 1.45 | 20.6 | 8 |
| 21 | 1.52 | 20.2 | 8 |
| 22 | 1.59 | 19.7 | 8 |
| 23 | 1.67 | 19.3 | 8 |
| 24 | 1.74 | 18.8 | 8 |
| 25 | 1.81 | 18.2 | 8 |
| 26 | 1.88 | 17.6 | 8 |
| 27 | 1.96 | 16.8 | 8 |
| 28 | 2.03 | 16.2 | 8 |
| 29 | 2.1 | 15.7 | 8 |
| 30 | 2.17 | 15 | 8 |
| 31 | 2.25 | 14.4 | 8 |
| 32 | 2.32 | 13.9 | 7.9 |
| 33 | 2.39 | 13.4 | 7.9 |
| 34 | 2.46 | 12.9 | 7.9 |
| 35 | 2.53 | 12.3 | 7.8 |
| 36 | 2.61 | 11.8 | 7.8 |
| 37 | 2.68 | 11.2 | 7.7 |
| 38 | 2.75 | 10.5 | 7.5 |
| 39 | 2.82 | 10 | 7.3 |
| 40 | 2.9 | 9.5 | 7.1 |
| 41 | 2.97 | 9 | 6.9 |
| 42 | 3.04 | 8.5 | 6.7 |
| 43 | 3.11 | 8 | 6.5 |
| 44 | 3.19 | 7.5 | 6.2 |
| 45 | 3.26 | 7.1 | 5.8 |
| 46 | 3.33 | 6.7 | 5.6 |
| 47 | 3.4 | 6.3 | 5.4 |
| 48 | 3.48 | 6 | 5.2 |
| 49 | 3.55 | 5.6 | 5 |
| 50 | 3.62 | 5.3 | 4.8 |
| 51 | 3.69 | 5 | 4.6 |
| 52 | 3.77 | 4.7 | 4.4 |
| 53 | 3.84 | 4.4 | 4.2 |
| 54 | 3.91 | 4.2 | 4 |
| 55 | 3.98 | 3.9 | 3.8 |
| 56 | 4.06 | 3.7 | 3.6 |
| 57 | 4.13 | 3.4 | 3.4 |
| 58 | 4.2 | 3.2 | 3.2 |
| 59 | 4.27 | 2.9 | 2.9 |
| 60 | 4.35 | 2.7 | 2.7 |
| 61 | 4.42 | 2.5 | 2.5 |
| 62 | 4.49 | 2.3 | 2.3 |
| 63 | 4.56 | 2.1 | 2.1 |
| 64 | 4.63 | 2 | 2 |
| 65 | 4.71 | 1.8 | 1.8 |
| 66 | 4.78 | 1.7 | 1.6 |
| 67 | 4.85 | 1.6 | 1.4 |
| 68 | 4.92 | 1.5 | 1.2 |
| 69 | 5 | 1.4 | 1 |
| 70 | 5.07 | 1.3 | 0.8 |