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

NAME
       sff2g3 - convert CAPI SFF fax files into G3 fax files

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

DESCRIPTION
       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.

OPTIONS
       -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.

REFERENCES
       The  standard  for  Group 3 fax is defined in CCITT Recommendation T.4.
       The   SFF   file	  format   is	specified   in	  the	 CAPI	 specs
       (http://www.capi.org).

BUGS
       The -d option isn't implemented yet.

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

SEE ALSO
       g32pbm(1), pbm(5)

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

greenie				   17 Jul 04			     sff2g3(1)

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