Buch1 > Using the Configuration Manager > Administration > Configuration VoIP > Settings for VoIP > STUN Server for the Connection of External VoIP Subscribers
STUN Server for the Connection of External VoIP Subscribers
Proceed as follows:
Using the Configuration Manager (Administration > Configuration VoIP)
Requirements:
VoIP channels (optional, see Technical Data in the Instructions)
Serveur STUN
Adresse IP ou URL
Port
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
The STUN server entered here can be used to connect to external private branch exchanges.
*Note: If all external private branch exchanges are connected to the PBX network via a VPN tunnel, no STUN server needs to be entered.
*Note: If IP protocol IPv6 is selected, STUN cannot be used as a NAT method either for SIP or RTP.
*Note: The page Synthèses > Ports shows an overview of the PBX ports (incoming and outgoing).