SamF: Hmm, 17db downstream attenuation is a bit high. Questions:
Distance from cabinet?
Naked or Clothed line?
Internal wiring setup?
a. less than 350M
b. Naked with VOIP line
c. Internal wiring is good. House is only 7 years old. Was getting 14000kbps downstream and 1100kbps upstream on ADSL2+
d. no splitter installed. Modem is plugged straight into the telephone jack. no other telephone jack around the house being used.