I was facing disconnection problem on my DSL. One of the main problem was related to my copper wire that was coming from the pole to my home.
In total there were 3 joints in the wire. I managed to get a new copper wire (now there are 0 joints) but to my surprise my line stats are still poor, although there is no disconnection problem now. My stats are:

Line Coding(Trellis): On On
SNR Margin (0.1 dB): 62 24
Attenuation (0.1 dB): 290 473
Output Power (0.1 dBm): 191 119
Attainable Rate (Kbps): 5135 289

The SNR is too low. How can I improve it ???