Quote Originally Posted by SOF006 View Post
His noise margin won't be able to sustain the speed though surely?
Yes the current noise margin wouldnt support those speeds. There is obviously some kind of line fault or wiring problem as there is no way that an attenuation of 30db should give that sync at 10db noise margin from the test socket. There could be something wired onto the A-B terminals of the back of the NTE5 or it may be a BT line problem.