Reserved ports on the system.
For more information, refer to Reserved
Ports on page 53.
If the system and firewall are not properly configured, users placing calls through a
firewall to systems may experience one-way audio or video.
By default, the system communicates through TCP and UDP ports in the 50000 - 54999
range for video, voice, presentations, and camera control. The system uses only a small
number of these ports during a call. The exact number depends on the number of
participants in the call, the protocol used, and the number of ports required for the type
of call: video or voice.
The following tables identify the number of ports required per connection by protocol
and the type of call.
Required ports for an H.323 two-way call:
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