Only just! I did have a 9600 baud modem, but never really got into online stuff until university in the mid 90's. The fact the university ran a bank of modems for those living off campus to dial in to at local rate was the icing on the cakeYoungster - some of remember using 300 baud acoustic couplers and getting excited when 1200 baud was introduced...
It's generally for devices such as modems where the data rate to the modem was typically 115200, but the data rate over the phone line was 56000 or lower. The modem had to be able to tell the computer to stop sending data before the buffers in the modem overflowed.![:lol:]( "Laughing")
https://en.wikipedia.org/wiki/Acoustic_coupler (US bias - U.K. had licence terms from the GPO for device connection that did not impact acoustic connections).
In-modem compression was one of the other reasons for modems to start needing hardware handshaking. Modems <=9600 baud were generally 9600 baud to the modem, and 9600 baud over the phone line, so no potential for FIFOs in the modem to overflow. Certainly your acoustic coupler wouldn't implement hardware handshaking!
Statistics: Posted by 6by9 — Mon Jul 15, 2024 2:36 pm