Toshiba e-studio 20 series

We've aquired a e-studio 20 machine. It is in great working condition. However, I am trying to set up the fax option to be able to send faxes via computer. It does send them through the keypad on the machine. The tech that repaired it had no idea how to set this up. I'm hoping someone from here will know and can lead me to the drivers and/or software needed to use the machine and fax properly. I have no manuals.

Any help would be appreciated!