Audio only coming through one way on occasion

[thebrokecarpenter]

We are currently having an issue with our phones where sometimes, when customers/vendors call us, they can hear us, but we cannot hear them at all. I ran the "Firewall Check" from the PBX Status area of the dashboard, and got thousands of "FULL CONE TEST FAILED" messages. I'm not sure how to resolve this, as the link that it directed me to had tons of stuff about port forwarding, reserved ports, something about stun servers, and a ton of other words I don't know anything about.

How can we fix this issue?

 

[cobaltit]

As the firewall checker is not passing, this is a network issue and not a 3CX issue.

This guide is designed to help with some common firewalls: https://www.3cx.com/docs/manual/firewall-router-configuration/

If you are unsure on how to resolve, then you'll want to reach out to a 3CX partner via the partner locator, or your IT person.