>> I have a Mac with a Geoport/Express Modem. Does that mean that I can do ISDN without getting a separate ISDN modem? << I think the answer is "No." You still need an ISDN terminal adapter which is in essence, a "digital modem", but it does some protocol juggling also. --- Daniel O'Leary, Sysop KloneZone Mac - A TeleFinder 5.2 Mac/Windows BBS 10036 North Suttonwood, Fort Forth TX USA 76108 (817)367-2558 (Voice) (817)367-2712(Dial-in) 1:130/1015(Fido) klonezone.tfnet.org(TFNet) kzpwrmac.cyberhighway.net(Internet) http://kzpwrmac.cyberhighway.net(WWW)