Hi all,
I want to send messages to gsm. I have a solution, but it relays on mail (mail message to gsm provider and from there sms) .
So , I want to use the internal modem from my computer. To attach a gsm to PC is too expensive for me.

Did anyone open a COM port of a modem and then, after answering, to play a sound for the other one to hear that sound ?

TIA,
Mihai .