Have Infinity 1 and no problems with speed or connection at moment (50mbps download). It's just odd that or phone line is always noisy when making calls so tried above test. Tried in current location of main phone and also plugged into master socket. In both cases quite a lot of background noise.
Is this normal despite good BB connection and speed?
Just realised that test recommended with corded but don't possess one! Will have to assume the hum is from that? Also don't want to go through rigmarole of calling India with inevitability of being told line ok so must be internal (£100 plus call out😡)