hi,
in fact this is kind of standard. I've found some pics of someone who has that cable and opened it up for us. Those showed me that I was right.
The Serial Connector on the AP103 (and oviously on all others that use the same cable) is just a standard ttl serial connector.
The 70$ (!) Cable contains nothing more than a DB9 Connector + the required circuit for converting ttl to something a standard RS232 can handle. This is just a MAX232 or compatible IC + 4 Capacitors, the DB9 Connector and the cable for the Pin Header on the AP.
The Pic of the Plugs and the Datasheet of the MAX232 enables you to find out the pinout:
Imagine the Plug on AP sid like this
black 1 -------------+ Vcc
black 2 ----| TX
white 3 ----| RX this side connects to Pin Header on AP
red 4 -------------+ GND
(without any warranty, so use on your own risk)
You will need to do what Aruba does if you want to connect that directly to a serial port since this requires different ttl levels.
You can also connect directly through some FDDI-to-usb because those can handle this directly.
I just don't understand why that Cable is so expensive with Aruba.
Sorry Aruba you have to admit that once you sold some of these cables someone will find this out!
Sebastian