They claim to know that it is not the phone line itself. What are you using to measure the attenuation/signal to noise? I have to say the upload speed being fas

They claim to know that it is not the phone line itself. What are you using to measure the attenuation/signal to noise? I have to say the upload speed being faster than the download speed, together with the lack of any drop-outs or instability in the connection did make me wonder about rate limiting.