Unable to Hear Audio In my softphone in some cases

FreePBX Endpoints
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Hi,

I’ve setup Freepbx on AWS EC2 Instance. I’ve configured it according to Freepbx documentation and some other guidance from this forum. I am able to make calls successfully from my workspace.

However, when i try to call in different destination around the world, i often face issue where my audio is not audible to the person in-front. Their audio is clearly audible to me.

I’ve researched about this topic and have also configured a turn server from ExpressTurn. However the issue still happens with different numbers and at different times. I also looked at pjsip logs in asterisks while making the calls where my audio is not travelling, however i don’t see any error / warning about anything.

Earlier i was getting stun timeout error when i was trying to use ExpressTurn server however then i defaulted back to google stun. I also verified using external turn server tools whether my turn server is accessible or not and no issues there as well.

I want to know if there are some other things that i can look into / debug to identify the issue?

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In my opinion you are wasting your time with fooling around with STUN.

Just setup a wireguard VPN server on your AWS EC2 instance, and load a VPN client on your laptop or whatever you are running your softphone on, and when you are at a destination then VPN into your FreePBX instance and register your softphone and make your calls. Here’s a set of instructions for loading a vpn server on debian 12:

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