In reply to a post by Hunter59:

The most significant thing I think is my US transmit power, it�s pitiful, As yet I have seen nobody else�s stats with a negative aggregate. I think that is cause of the reduced US rate.

Did you realise that every cabinet has to employ different power masks to ensure that the VDSL2 signals generated by the cabinet don't swamp the ADSL & ADSL2+ signals generated by the exchange (for people who haven't converted yet?

Cabinets close to the exchange allow for less power-masking (ie allow higher power), but the restriction is held over the whole of the ADSL2+ frequency band.

Cabinets further from the exchange are set to reduce power further, but over smaller frequency bands (under the basis that the higher ADSL2+ frequencies are unusable a certain distance out from the exchange).

I would imagine that upstream power is hit the same way, so I'd predict that your cabinet is quite a long way from your exchange.

My US rate hasn't lowered slightly, it has halved.

I think my original DS attainable rate was about 42000. It�s gone up quite a bit with 17a.

In the old 997 band-plan, the frequencies were split (bar the low U0 part):
D1: 0-3MHz Downstream
U1: 3-5.1MHz Upstream
D2: 5.1-7.05MHz Downstream
You'll have been using virtually all of this spectrum

In the new 998 bandplan, the main change is:
3-3.75MHz is swapped from upstream U1 into downstream D1.

Then, in adding the higher frequencies, the initial change is:
D2: Extended from 7.05MHz to 8.5MHz

As I think BaldEagle pointed out, your modem is not using any frequencies in U2 or D3, so we can forget anything above the 8.5MHz region. If you get the graphs that he describes, we'd find out more accurately, but in essence, it appears that:

a) You have lost 0.75MHz out of a total of 2.1MHz for upstream, or roughly one-third of the spectrum from U1, but gained nothing from U2.
b) You have gained 0.75MHz into D1 and 1.5MHz into D2, out of a previous total of 5MHz - or roughly an extra 50% of the spectrum for downstream. The first 0.75MHz will be capable of carrying more than the second 1.5MHz because of the distance.

So you can see that the scale of the change is actually fairly similar to the kind of scale of the change you have experienced.

I'd agree that your loss of upstream is probably the highest I've seen, but we're not talking about it being a long way outside our expectations. And undoubtedly those power-masks will give everyone different results.

I also agree that you're getting pretty good downstream totals. My old line would only give a max attainable of 60Mbps, at 650 metres, and that included using the U2 and D3 frequencies.