Pinout for the Sun RS232 serial port. PIN SIGNAL 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 GND 8 DCD 20 DTR Terminal settings should be 9600 8N1 The "Soldering Iron" solution If you tie a 4.7K resistor (1/4 Watt) between pins 3 and 25 of the ttya port, you electrically prevent a BREAK signal either from the key or from disconnecting or powering down the terminal server. This prevents intentional halts except by removing the resistor, but does allow recabling. Note: The above method may not be the choice method since this does not allow us to send a break intentionaly either. However Sun has released pathces for both 2.6. and 2.7 to eliminate this problem, but now we are stuck with no solution for the 2.5.1 machines. 2.6 patch 105924-10 2.7 patch 107589-02 2.8 integrated into the OS