Hello
I'm currently setting up Axon PBX on a W2003 server, but would like to know how SIP/RTP works as far as ports are concerned.
When setting up Axon, it requires opening the following UDP ports/range:
5060 5070 8000-8020 (for ten extensions)I seem to understand that SIP clients that need to register (either local phones, or road warrior with a hard/softphone) do this by connecting to UDP 5060.
OTOH, I don't know what 5070 is for, and how things work for RTP with
8000-8020: If RTP connections are peer-to-peer, ie. phone to phone, why does the PBX need to open up ports?Can someone tell me how the whole thing works? Some diagram of who calls what how?
Thank you.