[OpenSIPS-Users] SDP change issue

[Răzvan Crainea]

Hi, Chen-Che!

No, OpenSIPS does not have any built-in mechanism for this. As far as I 
understand, you sometimes need to rewrite the IP OpenSIPS advertises in 
the SDP. You can specify the new IP in the second parameter of the 
rtpproxy_offer/answer() function.

Best regards,

Razvan Crainea
OpenSIPS Core Developer
http://www.opensips-solutions.com

On 04/14/2014 09:49 AM, microx wrote:
> Dear all,
>
> I'm encountering an issue as follows. In the system, there are one SIP
> server (OpenSIPS) and multiple RTP proxies. Each RTP proxy serves for one
> region and the users in that region will use the corresponding RTP proxy for
> media streaming relay. To achieve this, I make the users in the same region
> have the same prefix in their SIP numbers and create a mapping between the
> prefix and the RTP proxy. With such setup, users will be served by a close
> RTP proxy and the latency would be reduced. By setting the RTP proxy set
> (id) to the corresponding prefix, such a scenario can be realized. However,
> in the system, the RTP proxies listen on private interfaces for security
> concern (an RTP proxy and some other applications run on a host behind NAT).
> Thus, I need to rewrite the SDP connection IP with the corresponding NAT's
> public IP for the RTP proxy. To do this, it seems somewhat complicated to do
> configuration. I would like to know whether OpenSIPS has any built-in
> mechanism for this issue (prefix + RTP proxy + NAT public IP). Many thanks
> for any comment.
>
> Best wishes,
> Chen-Che
>
>
>
> --
> View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/SDP-change-issue-tp7590721.html
> Sent from the OpenSIPS - Users mailing list archive at Nabble.com.
>
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