C350 audio Jack pinout

I bouth an old Motorola C350 phone to use it with celliax as suggested in many posts.

I know that the data cable is a standard USB but I was not able to find a sure information about the audio cable.

The audio connector is a 3 or 4 pin 2.5 mm jack ?

Can be used a 3 pin 2.5 mm to connect it to the computer ?

Which is the pin assignement (Common audio (L / R?), mic)?

I see on the "how to build an HW adapter" post but I didn't understand if the Jack audio connectios is a "generic one" or can be used also for C350.

Also I search internet for pinout (also in pinouts.ru) but i didn't find any sure descrition.

is there anyone that can give me these info ?

Thanks in Advance.

Franco


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c350 audiocable schema

c350 audiocable schema is here: http://www.celliax.org/howtobuildcelliaxadapter


for C550 I've used 2.5 mm

for C550 I've used 2.5 mm 3-pin jack. top is MIC-in. ring is Speaker out. and ground is ground :)


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