Reads a Common ISDN API (CAPI) structured file format (SFF) input file,
and converts every fax page contained in it to a raw G3 fax file.
The input SFF files typically come from fax reception programs using CAPI on
active ISDN cards (isdn4linux, AVM or DIVA cards) or similar. The output
G3 files are in the native format that all other G3 utilites in the
mgetty+sendfax package use.
If the input file name is -,
sff2g3 will read from stdin.
The output file name should contain a %d or %03d part. It will be
replaced with the current page number. If there is no page number field,
only the last page in the SFF file will be saved.