I know that Baud rate I/O SIM card to I/O GSM Module have much value

I know that Baud rate I/O SIM card to I/O GSM Module have much value

what is your question??? what do you mean???

pins I/O between SIM card and GSM module

describe your problem statement or the queery properly so that anyone can understand and reply to you....

I want selector 3 SIM card via RS232
____ ____
SIM Card I/O Data---------------- | ?? |-------- Tx Rx---------| ?? |----------- I/O Data GSM Module
|___|-------- Rx TX---------|___|

So there a way to do what they can do.

---------- Post added at 09:44 ---------- Previous post was at 09:43 ----------

I want selector 3 SIM card via RS232
____ ____
SIM Card I/O Data---------------- | ?? |-------- Tx Rx---------| ?? |----------- I/O Data GSM Module
|___|-------- Rx TX---------|___|

So there a way to do what they can do.

---------- Post added at 09:45 ---------- Previous post was at 09:44 ----------

I want selector 3 SIM card via RS232
____ ____
SIM Card I/O Data---- | ?? |--- Tx Rx----| ?? |---I/O Data GSM Module
|___|--- Rx TX----|___|

So there a way to do what they can do.