I forget what the menu is called, but it will be something like Internet, or Connection. It gives a list of tick-boxes with ADSL, ADSL2, ADSL2+ and so on.
G.DMT is what the first of those is often called.
It doesn't matter now we have the stats though, as your stats show you are on either ADSL2 or ADSL2+, which is what I wanted to check, and your sync is not exactly 1152kbps which might also have indicated ADSL/G.DMT.
Assuming you mean you did a Factory Reset
of the router, not just a reboot, then it's inexplicable to me. The noise margin shows you have plenty of sync available, and the attenuation fits with the speed you get from others.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM