I had to learn ADSL to this extent and more to get decent signal to customers at the ISP I worked at in the 00s. I feel for this guy. Nobody should have to lear

I had to learn ADSL to this extent and more to get decent signal to customers at the ISP I worked at in the 00s. I feel for this guy. Nobody should have to learn a ubiquitous technology like the phone system this deeply just to get basic connectivity to work.