Need handsfree cable wiring scheme for Nokia E72

[royakhmadsuyirat]

Dear All,
Pls help me... I have Nokia E72 and I want to make a Handsfree by my self, so can you send me connector and schematics pinout, about microphone impedance and what kind speaker that should me match.
And I will be appreciated if you can send me that schematics direct to my email at : royakhmadsuyirat@yahoo.com
Again thank you so much for your help.