Roy J. Tellason wrote:
I never could understand how they managed to do all of
that with what was
basically electromechanical stuff...
Some very tricky relays. That is why you have 1 for long distance.
I had a book about that -- 1940's ( but it got lost ) and the big
thing was automatic dialing. I am not sure but I think on the old non dial phones
you could even back then dial your number by tapping the hook on the phone.
Ben.