ISDN and DiapUp


Apple states in the Public Beta FAQ:

Q. Is it easy to get connected to the Internet?
A. Mac OS X is designed specifically for the Internet. In fact, it includes many of the same
technologies that power the Internet itself. Mac OS X makes it easy to get connected to the
Internet whether you use a dialup modem, ISDN, DSL, or Ethernet connection. To get connected
to your favorite ISP using your modem, use PPP Connect in the Applications folder.
To access the Internet through an Ethernet connection (DSL or local area network), configure
your network connection using the Network pane in System Preferences.

I can`t seem to find any way to make use of a ISDN modem anywhere, or get Classic to access the USB-port where my ISDN modem is.

Can anyone help? Is there a way?