LevelOne VOI-8001 - Manual (Page 63)

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4.2.5.2 Listen Port
/VoIP Setup/Advance Setup/Listen Port
In this page, user can define the usage port for setup the VoIP communication.
Both side of gateways need use the same port for begin VoIP communication.
a. SIP Listen Port : Define the listen port for SIP protocol, the default
port is 5060, input range from 1024 to 65535.
b. H.323 Call Signal Port: Define the Call signal port for H.323
protocol, the default port is 1720, input range from 1024 to 65535.
c. .H.323 Gatekeeper Listen Port: Define the Gatekeeper listen port
for H.323 protocol, the default port is 1719, input range from 1024 to
65535.
d. RTP Initial Port: Define the RTP package initial port, the input
range from 1024 to 65535. the gateway will display the used UDP
ports due to multiple lines connection.
After modify and press Modify, system will save and reboot automatically
to take it effective.