How to send/recieve audio with or without using AT commands in Sierra Wireless modem ?

Question

Device - Sierra Wireless MC7304

I have installed GobiSerial and GobitNet drivers but during voice calls, the modem's speaker isn't showing any activity of incoming audio.

OS - Ubuntu-14.04- (Kernel - 3.19.0-59-generic) Modem Source : alsa_input.usb-Sierra_Wireless__Incorporated_MC7304_0123456789ABCDEF-10-MC7304.analog-mono Modem Sink: alsa_output.usb-Sierra_Wireless__Incorporated_MC7304_0123456789ABCDEF-10-MC7304.analog-mono

Methods tried - AT commands & slqssdk API

Any ideas how to send/receive audio data of voice calls ?

Answer 1

Answered at - https://forum.sierrawireless.com/viewtopic.php?f=56&t=10086

Solution -
Try the following settings:

AT!AVCFG=0,3,3
AT!AVSETPROFILE=0
AT!AVVOICE=1