Hi
I developed an application that make a voice call using a landline modem and play a wav file using ONLY the modem's serial connection. On most landline modems, there is a set of AT commands that let your modem enter a sort of "play" state and all the data it receives on the serial port is assumed to be PCM data and is translated into a udible sound
Unfortunately, it seems that the same commands are not available for GSM modems
Do you know any way to implement this feature using a GSM modem or are you aware of a GSM modem out there that supports this feature?
Thanks in advance
Ambrogio