With modems1987  and zterm you could enter to a bbs and download software. You needed the number and of course a computer on the other side. So this bullet boards system where dial in systems. from time to time the mother of a guy took the phone .-) 

You only used this in the ‘phone cheap time’ - >21.00. A game for Amiga or Atari ST was 900kb - the modem was about 3600-12200 bauds. you waited very long from time to time.