From Matt Taylor at Plusnet - Apologies for the hassle, we can see there is a fault on the line given the stats and are pushing this back to BT to get the jumpers checked as of this morning -
AT 11.05 I recieved the following email from Plusnet
Yesterday BT reset the profile on your line for us, this set the Download Line rate to 750k, and we saw you synching at approximately 900k.
This morning I have retested and this is still showing the same, so at this point in time the best advice I can give you is to remain connected, as after 3 days of solid connection you may see the speed uplift further.
This is not a definite thing that will happen though, as your SNR Margin is already quite low, but this is the best advice I can give.
Other than this, the alternative would be to have your line changed to a fixed rate 1MB service, which could allow you speeds of 1MB but no higher.
Unfortunately we cannot request BT do any changes to your jumpering or wiring as there is no fault with either of these. It would appear that the PSTN repair work that was done to fix your fault voice line has changed you to a different pair on your line which has increased the attenuation values as you are now effectively on a different line.
Now although this is a different line, and the values are higher, it is not a faulty line and is working correctly, just that the line itself may now take a more extended route to your exchange, or have more joins in it, thereby increasing the attenuation levels.
If this is something you are not happy with and want changing, I can only suggest you contact your telephone line provider to have the line changed again, but as there is no fault you would in all likelihood be charged for this to be done.
For the moment I would advise to keep a connection ongoing for at least 3 days and then monitor the speeds that you receive after this period.
As a matter of fact prior to this incident my line attenuation was 53/54dB. It is currently 53dB. I'm beginning to feel as if I'm in a Monty Python sketch !
