Alcatel ot 565 jackplug pinout

[Guest]

hello,

I've have a  alcatel ot565 and I'm able to connect a handfree set (cord with intergrated microphone and earpiece and buttun) to the phone by means of a jackplug. I DO NOT have this cable. But I want to know the pinout of the jack plug.
It seems to be pretty universal. It's a fourway plug. It also seems that a universal earpiece can be connected to the phone. Maybe someone has the pinout of that.