This is the program to use for Fax
efax-gtk can be used to send and receive faxes using a fax modem.

It also has an interface to provide a “virtual printer” for sending
faxes from word processors and similar programs, can automatically
e-mail a received fax to a designated user, and can automatically print
a received fax.

You can install the efax-gtk package from the “Universe” repository (see
Add Applications).

To run efax-gtk, choose Applications ? Office ? Efax-gtk.