3cx Webrtc Line Is Not Registered !new! 〈ORIGINAL PICK〉

This report is structured for IT administrators and technical support teams to diagnose and resolve the problem systematically. 1. Executive Summary Issue: A WebRTC (Web Real-Time Communication) client (e.g., Chrome/Edge browser, 3CX WebClient) fails to register its SIP line with the 3CX Phone System. The extension appears as "Unregistered" or "Red" in the Management Console, preventing inbound/outbound calls.

3CX WebRTC Client ↔ 3CX Tunnel/SIP Proxy (Port 443/5001/5090). 3cx webrtc line is not registered