COMmander 6000/R/RX - Firmware V7.0D - Advanced Information V19 04/2018
1007
Settings – Administration
VoIP Configuration
To adopt the change, reboot the PBX.
STUN SERVER FOR THE CONNECTION OF EXTERNAL VOIP
SUBSCRIBERS
STUN server
IP address or 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.
Notes:
If all external private branch exchanges are connected to the PBX
network via a VPN tunnel, no STUN server needs to be entered.
If IP protocol IPv6 is selected, STUN cannot be used as a NAT method
either for SIP or RTP.
The page
Overviews > Ports
shows an overview of the PBX ports
(incoming and outgoing).