serial port wiring for unix-pc

[JL Gomez]

I have a question concering the wiring scheme for DTE to DTE connection.
I am using a RJ-11 - DB25 adaptor.  The problem is that there are only
4 wires available to connect.  I do know I need pins 2 & 3 crossed and
pin 7 is a straight thru.  Now, what do I do with the extra wire and
would I have to short any pins on the serial port end of the unix-pc?
Thanks for the info.
--
JL Gomez