 If you are using a IIgs and its modem port, the following is the right and
proper cable. Pay attention Apple!!!

Here is the correct cable pinout for the Apple IIGS modem port.

DB-25 End     Mini DIN 8 End
----------------------------
    2   <---------<    3  TX-
    3   >--------->    5  RX-
    6   >--------->    2  DSR (handshake in)
   20   <---------<    1  DTR (handshake out)
    8   >--------->    7  DCD
    7   ------+----    4  SIG GND
              |
              +---->   8  RX+

Ground RX+ to prevent noise pickup, it isn't needed for RS-232.
Pin 6, TX+, is not connected to anything.

Hope this helps, if you need more information, email mdavis@pro-sol.cts.com
he's tthe best expert on GS telecom.
