version 0.3d  May 3

  fixed a major X.75 incoming calls bug

version 0.3c  May 2

  added dynamic buffer allocation

version 0.3b  May 1

  call reference bug fixed; incoming & outgoing calls can now be mixed 

version 0.3a  May 1

  8 bit are cards are resetted
  CRC's & aborted frames are checked
  x.75 REJ response improved
  
version 0.3  