I just realised something I should have checked all the way back at the start of this, but didn’t think to check because the landline had just been repaired.
The phone is humming on a quiet line test. It’s not noisy enough to interfere with calls, but it’s not silent either.
It’s an old phone temporarily plugged into the master socket, not a dect by the way.
Fault reported….again.
I’m guessing it could well be why DLM hasn’t done anything to increase speeds.
