50 megabits/sec on normal phone lines?
 

Cable modems are now at about 1.5 megabits/sec download in most areas.

What if you had the ability to do 50 megabits/sec over a existing plain old telephone line? And say that the "backbone" network could handle all the users using their full bandwidth.

Besides transfering movies and music files, video conferencing and all that, what NEW thing would you do with it? This is bandwidth overload, it's too much for anyone to ever use on a daily basis.

And then, what if you got two phone lines installed and could now go 100 Mb/s ?

You would not by any chance have a relation to a recent poster on BearShare.net Forums who used the ID psouledout, would you?
Just curious.
We will see what comes next. ;)

Sorry, I mean your phone line to the public internet, like we do now with a ISP and a modem.
Not a private "in your house" internal network, those are already going 10 Mb/s and more.