No Audio On Call

This article will try to help resolve issues where you are able to pick up or make a call, but no audio is received on either end.

PBX Delivers Audio

This issue is almost always caused by the calling parties attempting to directly connect to each other, and something in the network blocks that. Normally, a call is engaged between the parties and the phone system, but RTP audio traffic gets sent directly between the parties.

If you have a NAT, two devices on the same LAN or subnet scheme that can't communicate with each other, or just a more advanced network with additional protections, this is likely the issue.

To resolve this, you can enable PBX Delivers Audio for the extension, and it will pin the traffic to the PBX instead of trying to make it directly.

1. Login to the bvoip phone system.
2. Go to Extensions > Extensions at the top.
   
3. Find the extension in question and edit it.
4. Go to the Options tab.
   
5. Ensure PBX delivers audio is checked in the Troubleshooting section.
   
6. At the top click Save.
   
7. Re-test your call and see if it's working properly now.