External Interface Jack Pinout
------------------------------
Pinout for the 10-pin round interface jack on the bottom of the
Mitsubishi-900: (the SMA jack in the center of the circle is for
an external antenna and/or booster kit.)

Starting at the "1:00" position and continuing clockwise around
the circumference of the jack,

  pin 1  -  LCURUN (inverted)
  pin 2  -  HFE (HFON)               hands-free ON (?)
  pin 3  -  DS1D (inverted)
  pin 4  -  EXT-ON                   external ON (?)
  pin 5  -  DS0D (inverted)
  pin 6  -  TXPS
  pin 7  -  RAUD                     receive audio
  pin 8  -  MCHG (STPB inverted)
  pin 9  -  GND                      ground
  pin 10 -  TAUD                     transmit audio


-end