Matrix ETERNITY NE System Manual
247
3.
Enter the password you created for the User ID on DynDNS.org in the
Password
field. The password may
be not more than 24-characters long.
4.
Enter the
Host Name
you created on DynDNS.org. The host name must be under 40 characters.
5.
Define the
Retry Trials.
This is the number of attempts ETERNITY NE will make to send the WAN IP
Address Update Request to the Dynamic DNS Server. The Retry Count may be set from 1 to 9. By default
the count is set to 1.
6.
Whenever you want to update the WAN IP Address on the DDNS server, use the button
Click to Update
IP Address
.
Router’s Public IP Address
This parameter is of relevance if the Ethernet WAN of ETERNITY NE is located behind a NAT Router and SIP
Messages are to be forwarded to the public internet.
Router's Public IP Address specifies the fixed IP Address of your NAT router required for NAT Traversal in SIP
messages.
1.
Enter the
Router’s Public IP Address
.
You also need to select 'Router's Public IP Address' as the 'Source Port IP Address' in the 'SIP Extension
General Parameters', when you configure SIP Extensions'. Refer the topic
"Configuring SIP Extensions".
You can also use STUN as an alternative to the Router's Public IP Address as NAT Traversal mechanism.
Ask your Network Administrator about the NAT Traversal mechanism that suits best for your voice network
and configure this parameter.
Simple Traversal of UDPs through NATs (STUN)
This parameter is to be configured only if the Ethernet-WAN of ETERNITY is located behind a NAT Router and SIP
Messages need to be forwarded to the public internet.
STUN specifies the mechanism required for NAT traversal in SIP messages. The STUN Server facilitates
traversing through most NATs, except symmetric NATs.
If your router has symmetric NAT,
do not
configure this parameter.
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