Data transmission with asymmetric transfer rates are anticipated rather to domestic subscribers, where the transfer rate is in the downstream direction substantially higher than the transmission speed in the opposite direction.
However, with regard to the number of sub bands for the upstream direction, should VDSL2 connection in asymmetric transfer mode to achieve higher transmission rate than that of older ADSL connection.
Basic frequency plan 998 is further divided into:
VDSL2 profile |
The highest utilized subchannel |
Upper limit frequency for downstream [MHz] |
Upper limit frequency for upstream [MHz] |
8a |
1971 |
8,5 |
5,2 |
8b |
1971 |
8,5 |
5,2 |
8c |
1971 |
8,5 |
5,2 |
8d |
1971 |
8,5 |
5,2 |
12a |
1971 |
8,5 |
12 |
12b |
1971 |
8,5 |
12 |
17a |
4095 |
17,664 |
12 |
30a |
2479 |
24890 |
30 |