Sierra Wireless MC8792V Voice function not working


I need the help for the Sierra MC8792V Module Voice function. We use it in our devices, but the voice function can’t work as expected. I have the AT command results, hope somebody here can help me to find the problem and really appreciate any solution:

Due to the forum words limit, I will attached the results.

Waiting for any kind help!!! Thank you very much!!!

It is unclear what exactly the issue you are faced with, can you please elaborate on your modem config, test setup etc…

Hi it could be that voice function is disabled. I think you only get it working about DC unlocker software