: Have your administrator confirm the PBX is on the latest build (e.g., v18 Update 5 or v20).
: Ensure your app is properly provisioned. Open the 3CX Web Client , go to the Apps section, and click the Provision button for your specific operating system to re-link your extension. Update Software :
(Admin configurable)
Ensure the HTTPS ports used by your PBX are accessible. 4. Clear Browser Cache and Extension Conflicts Sometimes "ghost" data prevents the WebRTC registration.
: Close and completely restart the 3CX Desktop App, especially after your computer wakes from sleep mode or switches networks (e.g., switching from Wi-Fi to LAN). webrtc line is not registered 3cx app
WebRTC often fails to register the line if it cannot detect or access an audio input device. 3. Network and Firewall Configuration
(User-triggered or automatic)
Instead of the user seeing a frozen "Not Registered" state, they would:
: If using the browser extension, right-click the blue 3CX icon in your toolbar and select "Reload extension" . : Have your administrator confirm the PBX is
Click your avatar in the 3CX Web Client and select "Logout," then sign back in.
Ensure TCP/UDP port 5090 is open on your server’s firewall, as the 3CX app uses this tunnel for communication. Update Software : (Admin configurable) Ensure the HTTPS