Oh, right...I clearly misunderstood this due either to my own stupidity or misinformation on the web (of which there is plenty, broadband is like one of the Dark Arts). So from my current sync rate which the HH reports as 3.406 multiplied by 0.882 = 3.004 . So my IP would be 3.0 in an ideal world, but the DLM may reduce it to match the noise margin (currently 10.7), errors etc. Still as the download speed is controlled by the IP it must follow that the IP can be calculated from the download speed, no?
no that won't work as download speed has a max of ip profile but minimum depends on line conditions
the noise margin affects your connection speed which in turn affects your profile
mmm, I thought someone would say that. This is the gate to the Broadband World where the trembling neophyte finds he must abandon all childish faith in logic or cause-and-effect, they will not serve him here!
some explanation here http://www.plus.net/support/broadband/speed_guide/broadband_terminology.shtml
If using the ADSL1 mapped IP profiles the two relevant ranges are as follows.
2848 - 3423kb/s 2500 (up to 2.5Mb/s)
3424 - 3999kb/s 3000 (up to 3Mb/s)
So with a connection speed of 3,406kbps you would still be in the lower range and have the 2,500kbps IP profile. That would explain your achieved download result of only 2,440Kbps.
It might be possible that with ADSL1 on a 21CN enabled exchange the 88.2% rule would then be used?
Without seeing the results of the Further Diagnostics it's hard to say for sure.
I think I read somewhere that the ADSL Max (up to 8Mbps) product can be implemented either using ADSL1 or ADSL2 (ADSL2 only available if on a 21CN exchange), but ADSL1 can perform better on some very long lines.
If so then ...
Is it the case that if ADSL Max is implemented using ADSL2 then the 88.2% IP profile is used?
Is it also then true to say that ADSL1 always uses the mapped set IP profiles?
I'm as confused as others at times.
you do see some posts where it is a 21CN enabled exchange where OP is on adslmax and profile is based on 88.2%