[SR-Users] B2BUA removing a=nortpproxy:yes (rtpproxy-1 <---RTP---> rtpproxy-2)

[Jesus Rodriguez]

Hola Iñaki,


> Hi, I must deal with a B2BUA which keeps the original SDP unchanged
> except the fact that it removes the "a=nortpproxy:yes" line added by
> RtpProxy.
> The B2BUA intercommunicates two Kamailio, both forcing its own RtpProxy server.
> 
> I've not tested it again but expect there will be no RTP as each
> RtpProxy will wait for RTP coming from the other. Am I right?
> Of course I could force RtpProxy just in NAT cases and so, but I
> prefer to force it always so the clients of each Kamailio can
> configure QoS for the media addresses (different in each server). Is
> there some workaround for it?


You can use "-f" with force_rtp_proxy() :

f - instructs nathelper to ignore marks inserted by another nathelper in transit to indicate that the session is already goes through another proxy. Allows creating chain of proxies.



> In the other hand: is it possible two different Kamailio's to share
> the same RtpProxy server? I've never tryied it. If it's valid, would
> it solve the B2BUA issue? (I don't think so as there are still
> different media sessions created by different kamailio instances).


Yes, you can share the same rtpproxy with different Kamailios.


Saludos
JesusR.

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Jesus Rodriguez
VozTelecom Sistemas, S.L.
jesusr at voztele.com
http://www.voztele.com
Tel. 902360305
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