Mic/ Speaker connection for ZTE ME3000 GSM Module

[Rosmawati Ismail]

Hi,

Does anyone knows the best way to interface microphone and speaker to GSM ZTE Module?
I have been doing some goggle on the net and found many solutions which I do not sure which one to trust.

What is the best amplifier IC to use with?
:sad:

Thank you.

 

[nikhilele]

Have you tried to connecting directly as good gsm modems whould have builting amplifiers for both...
first try connecting mic.. make call via AT commands using Hyperterminal if u r able to listen ur voice then no amplifier required at mic end..
then u connect small speaker 75 ohms or more and if u able to listen from this.. then u have it.

 

[Rosmawati Ismail]

Do you mean what I only need to do is connect mic P and micro N directly to phone jack?
I am using ZTE ME3000.

 

[nikhilele]

i think urs is equivalent to sim300 and you can give a try.. thats why i told you to connect mic first as it cannot do any harm.. but speaker some times can do.. so if mic works fine then only u try to connect speaker...

 

[OLDDUDE]

I think I know somebody that had done it before but using other gsm module