Ajit Pai @AjitPai
OTD in 1949, Joe Engressia was born. At 8, he randomly disconnected a long-distance phone call by whistling at 2637 Hz, a signal to the phone company that the call ended (but keeping line open). "Joybubbles" became one of the most notable "phone phreaks." https://t.co/JPkPoVCGa6 — PolitiTweet.org