I think the standard BBS modem for most BBS’s was the US Robotics brand if I’m not mistaken.
My first modem was a Supra 2400 baud, then thinking about all the speed I would have with my new 56.6. My first hard drive was a 20 meg, new it was $320. 20 megs $320 kids, imagine that.
That was for my wonderful brand new Amiga 500. Those were the days.