Int 2F Fn DB22  - Zyxel Zfax V3+ - Convert Voice File                      [F]

   AX = DB22h
   DS:SI -> source filename, including path (max 128 characters)
   DS:BX -> destination filename, including path (max 80 characters)
   CX = destination format
       00h two-bit ADPCM, 01h three-bit ADPCM, 02h VOC

Return: AX = status (see #2768)

See Also: AX=DB13h,AX=DB20h,AX=DB21h,AX=DB23h