It is normally capped on the other end. Wouldn't want to give you anything free would they? Hehe. Anyways you are right about the attenuation I meant to change that too, but missed it. Anyways. You can call your ISP and get someone from the help desk to contact thier digital services group to look at your signal and see if it falls into thier acceptable ranges. If it does then all is well. If not, they can change it with the profiles. While you got them on the phone find out what thier limits or acceptable numbers are. I know most of AT&T's for each available speed we sell. Good luck.