mgetty -- A getty replacement for use with data and fax modems.
http://www.leo.org/~doering/mgetty/index.html
The mgetty package contains a "smart" getty which allows logins over
a serial line (i.e., through a modem). If you're using a Class 2 or
2.0 modem, mgetty can receive faxes. If you also need to send faxes,
you'll need to install the sendfax program.
If you'll be dialing in to your system using a modem, you should install
the mgetty package. If you'd like to send faxes using mgetty and your
modem, you'll need to install the mgetty-sendfax program. If you need a
viewer for faxes, you'll also need to install the mgetty-viewfax package.