Anyone else remember the modem that sat on the desk and you had to plug the whole phone hand set into them?Yep, darn right! These young'uns don't know what they missed.
300 Baud seemed like lightning after being accustomed to 60 words-per-minute from my Teletype® machine...
That device was called an "Acoustic Coupler."
Arrgh!! MMmmmm... sweet, juicy '70s tech.