Hi Mikhail, That’s correct!
Bono nodes run an instance of restund (http://www.creytiv.com/restund.html) which acts as a STUN/TURN server to help establish media flows if the endpoints support ICE (https://en.wikipedia.org/wiki/Interactive_Connectivity_Establishment). In the event that the endpoints are behind restrictive NATs, the restund service may need to proxy the media streams to allow them to get through the NATs (using TURN). If your endpoints are behind NATs but do not support ICE for media NAT traversal, you will need the P-CSCF to anchor the media on all calls. Bono does not support this functionality, but our commercial P-CSCF, Perimeta (http://www.metaswitch.com/products/perimeta-session-border-controller), does. Ellie From: Clearwater [mailto:[email protected]] On Behalf Of Mikhail Kulinich Sent: 27 October 2015 09:35 To: [email protected] Subject: [Clearwater] RTP forwarding Hello! I found out that Bono requires some ports to be opened to external network. Here is the extraction from the firewall documentation page (http://clearwater.readthedocs.org/en/stable/Clearwater_IP_Port_Usage/index.html): · RTP forwarding: · UDP/32768-65535 As far as I understand, those ports may be used to carry RTP traffic between 2 IMS clients if they are, for instance, on different sub-nets (e.g. can't communicate directly with each other). Bono acts as RTP proxy. Am I right? If not, could you please clarify what is RTP forwarding? -- Thank you, Mikhail
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