[thakoppno]

There are more telecommunication lines now than ever. We’ve just gotten really good at organizing them?

[kibwen]

We've gotten really good at multiplexing lots of connections over a single line.

[kikokikokiko]

I believe the concept of multiplexing made the tower obsolete, orher than the subterranean cables of course.

[ntoskrnl_exe]

I’m not sure that plain old telephone service allowed multiplexing, so it was probably just the latter