ACI specs anyone?

[sunbug]

Hello there, eveyone!

I wonder if there are any ACI (accessory control interface) specifications out there.
May be someone got original DKU-5 and can snoop what it is doing to
pins 2,3,4 on the phone?
(phone should show "Data accessory connected")

My problem that I got Prolific PL2303 based cable
It works fine for graphics/tones/SMS, but won't work as DATA cable
I suspect phone (6100) won't enter "data mode" without correct ACI
handshake with cable.

(I can not use original DKU-5, as there are no drivers for my O/S).

Cheers,
SunBug

[WkWk]

If anyone has this info would be really good as I am investigating what I need to connect to the pop port to make the handsfree profile activate.