sff2g3(1)                    mgetty+sendfax manual                   sff2g3(1)


       sff2g3 - convert CAPI SFF fax files into G3 fax files


       sff2g3 [-r] [-d] [-v] input.SFF output.%03d.g3


       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.


       -r     reverse  the  bit order in the bytes of the output G3 file.  The
              input bit order is fixed.

       -d     will one day make sff2g3 prepend a digifax header to the page.

       -v     verbose mode - show what’s  going  on.   Multiple  -v  arguments
              increase debug output level.


       The  standard  for  Group 3 fax is defined in CCITT Recommendation T.4.
       The   SFF   file   format   is   specified   in    the    CAPI    specs


       The -d option isn’t implemented yet.

       The output file name is not yet robust against format string attacks.


       g32pbm(1), pbm(5)


       sff2g3 is Copyright (C) 2004 by Gert Doering, <gert@greenie.muc.de>.

greenie                            17 Jul 04                         sff2g3(1)

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