AVer EVC900 - Manual (Page 63)

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After finishing all settings, select
“Apply” to
active the changed settings.
Firewall
Configure the following items to setup the Firewall.
Select Network│Firewall and press .
Configure the following relative items to setup
the Firewall.
TCP/UDP Ports
By default, the system communicates through
TCP/UDP ports in the range from 30000 to
30299. You can specify the range for your
specific network environment.
 You must configure your firewall to allow inbound/outbound traffic through “UDP (port 1719)”/ “TCP
(port 1720)
” for H.323 call setup.