Winmodems are modems which lack some hardware. They use software drivers to emulate the hardware, andthe CPU to do some tasks. Unfortunately the drivers provided by the winmodem manufacturers are Windows only.
There is no sure way to know if the modem should work in Linux or not, except trying it yourself, or
ask someone else who has tried it. Fortunately, there is a Web site with a very long list of modems that are
known to work in Linux, and those that are winmodems.
The Web site can be found at http://www.o2.net/~gromitkc/winmodem.html.
"Windows Linux Tips: Is my modem a winmodem"
Reference : techpraveen.com