Suggestions re socket and protocol:-
1) If you want a neat socket with phone and broadband sockets, then given the XNTE I suggest an
XTF 85 faceplate instead of a complete XTE-2005.
2) I only skimmed the thread but IIRC you don't particularly want a phone anyway, in which case the ADSL cable from the router should be pluggable directly into the existing socket, with no filter. The only purpose of the filter is to prevent ADSL "noise" getting onto the phone line and ADSL frequency range noise picked up by the phone cabling side of things being fed back onto the ADSL circuit.
3) The best connection for your line I suggest would be ADSL2, rather than ADSL(1) or ADSL2+. See
this post, but note that I believe the "saveall" needs to be a separate command, not part of the main one. (It may even be "save all". What it does is preserve the setting for subsequent re-connections).
4) What is strange is your downstream noise margin never seems to be near the default 6dB. What time of day do you tend to connect, and what time of day do you read the stats? Daylight connections are fastest, and a stats reading immediately after one would be interesting.
My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost.
Internet connection - IDNet Home Starter Fibre.
Live BQM.
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.