I'm getting maxdsl next week so i have been checking line quality to try and make sure i get the best speeds for me line, currently my router is upstairs connected to the master socket by a 15m extension. I was gettin the feeling this was robbing me of SNR. Currently on 2mb with 51db attenuation and 11db SNR, to test my theory i plugged the router directly into the test socket in the master socket and the SNR was 17db so this extension must be really poor quality. I cannot locate the router at the master socket because it is hard wired into the xbox and 2 computers upstairs. Do you think i should get a proper phone socket put upstairs or buy wireless adapters for my pc's and run a long ethernet cable to the 360?