Help > Using the web interface > Administration > VoIP > VoIP configuration > STUN server
STUN server
STUN server
Requirements:
•support for public DNS mapping by the router on the PBX network
•call forwarding from the SIP port of the internal VoIP registrar to the PBX's IP address in the router
•Configured DNS server
*Note: If IP protocol IPv6 is selected, STUN cannot be used as a NAT method for neither SIP nor RTP.
*Further help under VoIP
IP address or URL
Address of the STUN server
*Further help under VoIP
Port
Port of the STUN server.
*Note: The page Administration > Network > Ports shows an overview of the PBX ports (incoming and outgoing).
*Further help under VoIP