In Old Movies, Why The Dial Tone After Someone Hangs Up?

Brace yourselves, we're about to get into some serious detail about telephone systems. Thanks to all the folks at Seattle's Museum of Communications! http://museumofcommunications.org/

They're also on YouTube at https://www.youtube.com/user/museumofcomm

...and Sarah has a personal blog specializing in the ongoing restoration of the 1923 Panel Switch at the Museum: http://revertive-pulse.tumblr.com/

Edited by Michelle Martin, @mrsmmartin

I'm at http://tomscott.com
on Twitter at http://twitter.com/tomscott
on Facebook at http://facebook.com/tomscott
and on Instagram and Snapchat as tomscottgo

Видео In Old Movies, Why The Dial Tone After Someone Hangs Up? канала Tom Scott