NeXTStation Color DSP cable pinout

I recently accquired a NeXTStation Color, complete with color monitor and DSP box. Unfortunately, I don't have the cable to go from the NeXTStation to the DSP box, and therefore, I can't use the computer because the keyboard also connects to the DSP box. Does anyone have the pinout for this cable? Also, how does everything connect? I have seen various info on the internet that conflicts. I am assuming by looking at it that the monitor port is just a monitor port, and connects to the monitor through a standard 13W3 cable (came with the computer, but it Sun branded). Then the sound box would connect to the computer through the DB-15 on the back of the computer labelled "DSP" and to the DB-19 port on the sound box. Then the keyboard plugs into the sound box. But http://www.obsoletecomputermuseum.org/nextcolor/monitor_cable.jpg that show a three headed cable that would connect the monitor to the computer, and to the back of the sound box. But then what would the DSP port be used for? And how would the computer get the signals from the keyboard? I'm new to NeXT hardware, so any help would be greatly appreciated. Thanks! Ian Primus ian_primus(a)yahoo.com