I vaguely remember seeing a physical boxed software title in my local stationary/book/media store that I am pretty sure in retrospect must have been a WAP gateway you could install on Windows and dial up to your modem from a mobile phone.
The idea was presumably that if you'd have a second line or maybe broadband connection on your computer, you could save on your mobile operator's WAP fees if you had cheaper local calls to your own landline, or possibly access local data on your PC?