AVer EVC130 user manual - Manual (Page 67)

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Gatekeeper IP Address
Enter the IP address for the gatekeeper server.
Enable Gatekeeper
Select this check box to Activate/deactivate
gatekeeper.
 Make sure to setup the Gatekeeper before setting up the Firewall.
Enable H.460 Firewall Traversal
If you want to enable the H.460 Firewall
Traversal, please set the following ports in port
forwarding in your firewall before start
installing your EVC.
 Make sure your gatekeeper supports H.460 Firewall Traversal before enabling it.