Two checks that only make sense from your browser: a WSS SIP handshake against a WebSocket SIP edge, and a STUN/TURN ICE gather so you can see the public IP your SBC sees and whether a TURN server actually relays. Useful from VPN, captive portals, and for IP-ACL debugging.
Open a WebSocket with the sip sub-protocol (RFC 7118 §5) and report the negotiated protocol, handshake time, and close code.
Drive RTCPeerConnection to gather ICE candidates against the configured ICE servers. Surfaces your public IP viasrflxcandidates and confirms TURN relays via relaycandidates.
Need the actual TLS certificate detail?
Browsers can't inspect peer certs. Use the DNS & TLS diagnostics tool for SAN, validity, RFC 5922 §7.2 compliance, and chain validation.
