V.22bis (2400baud) was created in 1984, so it would be 1200 before then
V.22bis (2400baud) was created in 1984, so it would be 1200 before then
Source: en.wikipedia.org/wiki/Modem
Oh, apparently "2400 baud" does not mean "2400 bits per second". Weird. We always used to use "baud" and "bits per second" interchangeably.