What's so special about that USR modem? You can buy all sorts of other modems for about $20.
My main usage for a modem these days would be to get call display into my network that could then be broadcast out using somthing like YAC. But I never really used my fixed line phone anymore.
And 14.4k was LUXURY. I started using a 300 baud modem on my Commodore VIC-20.