Been having problems with my line, Random discnnections ans low connection speeds, I was stable at 2.2 meg but for the last month. BT came out and apparently found a fault with the master socket. This was changed, Downstrean attenuation has gone from 50 to 55db's and now when the phone rings the SNR goes fron 15 upto 24. All filters have been changed, router moved away from the phone, any ideas?