mode [ options ] file1 file2...
Mfax can be used to manually send or receive files from a fax modem,
bypassing the normal Faximum spooler.
It can be used when other devices are being used to control the phone line
(such as voice applications).
/convert. This option can be specified multiple times on the command line. All files are converted prior to initiating a call.
For receive, a device must be specified if more than one fax device exists.
On transmit, mfax will use the first available device if no device was
explicitly specified with the -f option. You can use a symbolic device
name that references a file
/dev directory (e.g.
fax-line-1) or an absolute path (e.g. /dev/tty2a).
On transmit, the -t option must be used when the file(s) to be transmitted are not already in TIFF-F format. Mfax uses the same mechanism as sendfax for file conversion. A missing phone number is legal; mfax will assume the number was dialled by some other method (e.g. manually) and will attempt to start a fax session without dialling. Received data is stored in a TIFF-F format file.