User Manual HX4E/MX8A Series Voice Gateway
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If Use the following DNS server address is selected, the network IP address of the
Primary DNS server must be entered, and there is no default value.
If Use the following DNS server address is selected, the network IP address of the
Secondary DNS server can be entered, and there is no default value.
The device periodically sends a STUN request to the STUN server to obtain the public
IP address for the front-end router.
It is disabled by default.
Set the IP address or domain name of the STUN server. The factory default STUN
server is the New Rock STUN server.
Set the port of STUN server. It is 3478 by default.
The interval at which the device sends a STUN request ranges from 30 to 3600
seconds.
Trunk re-registration: A re-registration of the SIP trunk is triggered upon the
detection of the change of the public IP address of the device by using STUN query.
Normally, the session interval of STUN request should be shorter than the
registration period.
Note: The IP address obtained through STUN is used only for re-registration of SIP
server, and it is not used in SIP message fields such as Via and Contact and SDP C
field.
Trunk re-registration & NAT address updating: A re-registration of the SIP
trunk is triggered upon the detection of the change of the public IP address of the
device by using STUN query. And the IP address obtained through STUN is used in
SIP message fields such as Via and Contact and SDP C field.
2.3.3 VLAN
After login, click Basic > VLAN tab to open the configuration interface.
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