Octo - What ports are used by the videobridges for audio and video communication?

Hello everyone and thanks in advance for your time.
It is in my understanding that in order to enable Octo I have to open the 4096 port ( or similar) so that the Videobridges can exchange signals between them.
My question is about the audio-video streams exchanged between the Videobridges ( ie: stream from userA in regionA to userB in regionB and so on) : are them transmitted on the 10000-20000 range ports just like the ones from Videobridge-to-User-Browser connections or I have to open other ports in the internal network?

Best Regards,

It is just UDP 10000.

Perfect, thank you.
Have a nice day.