Binary package “sfftobmp” in ubuntu oracular
SFF (Structured Fax File) Converter
Tool to convert "Structured Fax Files" into Windows bitmaps
(BMP), Portable Bitmaps (PBM), JPEG Pictures (JPG) and
single or multi-page TIFF Images.
.
SFF means 'Structured Fax File', intended by the CAPI interface
to be used to save incoming faxes. Within GNU/Linux, cards such
as the AVM-B1 create such files.