The line is in Tunisia, and depends on tunisia telecom. it is a comparable scheme to french one: copper wires are owned by telecom provider also the exchange, and many ISP are just resellers of bandwith and internet access.
about these screen shots, i have almost the same values anytime in the day.
The ISP technician told me the same thing about a problem in dslam and probably a port change is needed.
i just can't find any tutorial about the meaning of the columns (except those well known snr, rate, etc..) is there any document explaining what is HEC, total cells, RS words, etc so i can bring that with a second customer complaint to telecom provider?
i'm not convinced about field person telecom technicians saying that the problem is due to wire cross section, so i have to give solid arguments to make things move.
ps : i changed the language of router especially for the forum, which is the only one with members having advanced skills about adsl.