[SR-Users] rtpengine with rejected re-invites to new RTP ports
rfuchs at sipwise.com
Mon Sep 29 19:17:59 CEST 2014
On 09/25/14 12:05, Jeff Pyle wrote:
> Given the following scenario with Kamailio and rtpengine in the middle:
> - call establishes with G.711 RTP
> - b-leg re-invites to T.38, indicating a different port number then he
> is using for G.711
> - a-leg refuses the re-invite with a 488
> - call continues using G.711 on original port numbers as if re-invite
> never happened
> Will Kamailio and rtpengine handle it?
> Today I have a functional configuration with rtpproxy on another SIP
> proxy. It handles every scenario I have tried except this one.
> rtpproxy sees the new ports in the re-invite and adjusts its session
> accordingly. If the re-invite is rejected, the old media ports are no
> longer valid through rtpproxy, and the call fails.
> Is there an approach I can take with Kamailio and rtpengine to allow
> this scenario to succeed?
This may or may not work with rtpengine. If it does work, it's simply a
lucky side effect, as this is entirely unsupported and I've never tested
it myself. Now if you had a final re-invite back to G.711, then that
would and should most definitely work.
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