Matrix ETERNITY NE System Manual 211
UDP NAT Keep Alive
This parameter is to be configured when the ETERNITY (Ethernet-WAN) is connected behind a NAT router
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and
SIP messages are transported over UDP. UDP NAT Keep Alive messages must be sent to refresh the UDP binding
in the NAT router.
1. Select the check box Enable UDP NAT Keep Alive to send UDP NAT Keep Alive messages periodically to
refresh the binding in the NAT router. Default: disabled.
2. Define the Interval (sec) for sending the UDP NAT Keep Alive messages. This time period should be less
than the UDP Binding Timer of the router. The valid range is 001-999 seconds. Default:120 seconds.
3. Select the Type of Message to be sent when UDP NAT Keep Alive is enabled. Select either REGISTER or
NOTIFY. Default: NOTIFY.
TCP NAT Keep Alive
This parameter is to configured when ETERNITY (Ethernet-WAN) is connected behind a NAT router and SIP
messages are transported over TCP. TCP NAT Keep Alive messages must be sent to refresh the TCP binding in
the NAT router.
1. Select the check box Enable TCP NAT Keep Alive to send TCP NAT Keep Alive messages periodically to
refresh the binding in the NAT router. Default: disabled.
2. Define the Interval for sending TCP NAT Keep Alive messages. This time period should be less than the
Binding Timer of the router. The valid range is 001-999 seconds. By default it is set to 120 seconds.
61. Network Address Traversal (NAT) allows multiple hosts in the network to share the single public routable IP address. Means all the
hosts in the private network shall be identified by single public IP address in the global IP cloud.
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