I have a line that used to run ADSL 2+ and achieved approx 17 Mb/s down. The router used to report attenuation of 29 dB. Since it was upgraded to VDSL it now reports an attenuation of 26 dB.
The Kitz speed calculator implies that would mean it's approx 1.9 km from the PCP?
However a BT line test on that line estimates it at around 1 km, so would I be right in thinking the attenuation should be lower and there is a possible high resistance joint? On VDSL it achieves a banded 35 Mb/s down and a banded 6 Mb/s up. I am hopeful the banding will be removed (it's be banded for over a year though!), as the router claims attainable of 41 Mb/s down and 7.9 Mb/s up.