[WP76xx]: Audio streams are not connecting

Legato Application Framework
21

After I accept the call from the AT command, I only hear a periodic beep sound.
I tried checking the profile configuration:-
at
OK
AT!AVAUDIO=3,1,/home/root/0-to-9_8k.wav
ERROR
AT!USBCOMP?
ERROR
AT!USBCOMP?
ERROR
AT!USBCOMP?
ERROR
AT!AVCFG?
!AVCFG: 0,0,2
!AVCFG: 1,1,2
!AVCFG: 2,1,2
!AVCFG: 3,1,2
!AVCFG: 4,1,2
!AVCFG: 5,1,2
!AVCFG: 6,1,2
!AVCFG: 7,1,2
!AVCFG: 8,1,2
!AVCFG: 9,1,2

OK
AT!AVSETPROFILE=5
OK
AT!AVAUDIO=3,1,/home/root/0-to-9_8k.wav
ERROR
AT!AVAUDIO=1,1,/home/root/0-to-9_8k.wav
OK

22

You need to enter at!entercnd=“A710” first.

Also you can try other network operator as i suspect this is a network related problem