Hello,
I am using the EC200UCN GSM module (EC200UCNAAR03A03M08).
I designed the PCB according to the datasheet, and the microphone and other functionalities are working. The microphone is working directly without any enabling or disabling commands. However, the speaker is not working.
Should I enable any AT commands for the speaker? Is this issue related to the software, or could it be a hardware issue?
Is your issue resolved. i also got trouble while using speaker