8pin MiniDIN female port / male connector

9pin D-SUB male connector

RS-232D RJ45 male connector / female port

Need to build your own adapter to hook up a box with DB9 connector as a serial terminal? Here is the correct pinout:

PC (DB9)	SGI (MiniDIN8)		RS-232D RJ45		description		
1 cd            7 cd			2 cd			carrier detect
2 rxd           5 rxd			5 rxd			recieve data
3 txd           3 txd			6 txd			transmit data
4 dtr           1 dtr			3 dtr			data terminal ready
5 gnd           4,8 gnd			4 gnd			system ground
6 dsr           -			1 dsr, ri		data set ready
7 rts           6 rts			8 rts			request to send
8 cts           2 cts			7 cts			clear to send
9 ri            -			1 dsr, ri		ring indicator

Notes: If you build a connector<->connector cable, use the minidin8 male pictures (the one to the right).
If you want to use CAT5 cabling, build an adapter with MiniDIN8 male connector and RJ45 female port.
Remember to mirror the pins while soldering - the images show the front side of the connectors, not the side you are soldering on!
Probably you wont need the "data set ready" and "ring indicator" pins.