are you connecting direct to test socket - no extension cable? have you tried a different modem cable from hub to socket
do you have any extension sockets in other rooms? if so are the 'dead - no dial tone' when you connect to test socket
That master socket is a poor design, the face plate has a habit of working loose for no reason, hence generating electrical noise. I have mine thoroughly taped up, solid as a rock! No problems.
I've plugged the router and phone back into the socket as normal now, but the second set of results were the router plugged into a filter then into the test socket. I don't have any other sockets, it's just a one bedroom flat, and I'm afraid I don't think I have another cable to test that out. Is it likely that could make such a difference? Genuinely asking - sorry, as you can probably guess this is getting a bit above my level of understanding
your connection speed is very poor even in test socket which eliminates any problems with faceplate this is compared to the dslchecker results ans also the attainable speed shown by your hub I would phone 151 or 0800800151 from mobile and get engineer visit complain that speeds are far to low and your line is ok and you have tried test socket
What about the quiet line test? You would have been better off leaving the hub connected to the test socket as your noise margin indicates either a line problem or faceplate problem. DLM has put you into a banded profile because of the issues.
Okay, thank you very much for taking the time to help anyway. It's strange, I mean I have a fair few devices on it, I stream quite a bit, and watch BT football that comes through the wifi - and in terms of it being slow/dropping out it's actually running as well as it has done since I moved in about 6 months ago. I wouldn't have even noticed at all if I hadn't looked into upgrading it for 4K.
did quiet line test already message 3 only dull hum with cordless phone
@imjolly Oooops I missed that.