05-21-2020, 01:52 PM
Did you follow Setting Up the Modem For Voice Calling? Since you have audio configured in userspace on the Phone, I suspect the problem is that you have not configured audio on the modem side. You need to run the following AT command one time to configure the modem for audio:
Does that solve your problem?
Code:
AT+QDAI=1,0,0,2,0,1,1,1
Does that solve your problem?