Recent new line install with fresh master socket and faceplate. In good circumstances, the line can sync at
18.828Mbit/s downstream with SNR 6.5dB
1.188Mbit/s upstream with SNR 6.40dB
I'm quite puzzled by the low upstream, router will sync as low as 600kbit/s. Line length is long and predictions on BT wholesale checker are way off on the upstream. Underground cabling was installed in the 70s.
Would appreciate any thoughts (other than move house!! haha) ?