How to do audio record and playback of VoLTE calls using WP7607 module

IoT Modules WP Series
5

Yes, but it gives me error. I am not sure what wrong I am doing

AT!AVAUDIO=1,1,/usr/avfile.wav

ERROR

AT!AVAUDIO=2,0

ERROR

AT!AVAUDIO=2,1,/usr/avfile.wav

ERROR