My CDC Plato terminal supports these rates:
If receiving at 1200: 75, 120, 150, 600, 1200
If receiving at 1260: 78.2, 126, 157.5, 630, 1260
Also, my International Data Sciences, Modem Test Set supports the
following data rates: 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400,
4800, 9600. ALso, stop bits can be either 1, 1.4, or 2. This is a
1980's device, with Nixie tube display.
-Lawrence LeMay
What was the progression in modems? Was it 110, 135,
then 300, or were the
first two speeds pre modem technology?