[SR-Users] Kamailio RTP Proxy Questions

Fri Oct 7 14:38:09 CEST 2011

Carsten
Really appreciate your input.

I am completely new to this. Please bear with me with easy questions.

When you say I can use rtpproxy_manage() in the request and response and use
rtpproxy_destroy() in BYE, I want to know where I have to modify. Is it
kamailio.cfg file where I need to modify. If it is the case, do I need to
modify the route block as below..., kindly guide me here with steps...

# Main SIP request routing logic

# - processing of any incoming SIP request starts with this route

route {

# per request initial checks

route(REQINIT);

# NAT detection

route(NAT); .......................

Also, we are just telling rtpproxy_destroy in BYE case, will it not affect
other calls. At any given point of time, there might be more than 1 calls,
doing rtpproxy_destroy will stop rtp session for disconnecting call or can
it affect the existing active calls.

Thanks

Austin.

On Fri, Oct 7, 2011 at 5:39 PM, Carsten Bock <carsten at ng-voice.com> wrote:

> Hi,
> you can simply use Kamailio and RTPProxy here.
> You simply can use rtpproxy_manage() in the request and in the reply;
> rtpproxy_destroy() in the Bye-Message. You must also use
> record_route() in order to have all subsequent requests going through
> your proxy. That should do your job.
>
> May you want also to look at SEMS (iptel.org/sems) as an SBC. SEMS can
> do that as well, but additionally also teardown in case of
> RTP-Timeout, Codec Enforcement (e.g. only allow G711) and of course
> topology hiding.
>
> Kind regards,
>  Carsten
>
> 2011/10/7 Austin Einter <austin.einter at gmail.com>
> >
> > Dear Carsten
> > Thanks for reply.
> >
> > I did not install rtp proxy .  I just installed kamailio after that I was
> able to run both kamailio and rtp proxy.
> > I am surprised, I thought after installing kamailio 3.1.5, I will be able
> to execute both kamailio and rtpproxy.
> > Not sure it it was installed in my lab pc by somebody else previously.
> >
> > First of all I would like to check if the scenario I am talking of is a
> right case to use Kamalio or not.
> >
> > 1. I will be running the sip softphones in private/public network.
> >
> > 2. I want to run kamailio proxy in public network (as an intermediate
> proxy).
> >
> > 3. I will hav a main proxy in public detwork.
> >
> > What I want is all my signalling and RTP packets should pass through
> intermediate proxy (that is Kamailio only).
> >
> > For this purpose do you suggest Kamailio or someother proxy/b2bua.
> > I am able to force SIP packets through kamailio proxy (by use of route
> stuff in softphone).
> >
> > My main concern is when INVITE message pass through Kamailio,
> will Kamailio proxy change the IP address of phone present in SDP to self
> address so that media packets from called party side will come to kamailio
> proxy.
> >
> > Same concern otherway. Like when 200 OK to INVITE passes through
> kamailio, will kamailio change IPaddress in SDP to self IP, so that media
> packets from calling side will reach kamailio.
> >
> > Kindly help me to choose right proxy or should I look for b2bua.
> >
> > Thanks
> > Austin
> >
> >
> >
> > On Fri, Oct 7, 2011 at 3:05 PM, Carsten Bock <carsten at ng-voice.com>
> wrote:
> >>
> >> Hi,
> >> did you also install the RTPProxy itself? It is an addon to Kamailio and
> not a part of Kamailio.
> >> You find the RTPProxy here: www.rtpproxy.org
> >> Carsten
> >>
> >> 2011/10/7 Austin Einter <austin.einter at gmail.com>
> >>>
> >>> Hi
> >>> I downloaded 3.1.5 Kamalio source, did make and install. Tried to run,
> and tested few basic scenarios, everything working fine.
> >>>
> >>> I have a main proxy, want to use kamailio as intermediate proxy and my
> requirement is all RTP packets should pass through machine in which Kamalio
> proxy is running. I beleive RTP Proxy I can run in same machine where
> Kamailio proxy is running with proper configuration .
> >>>
> >>> For this I am referring,
> http://nil.uniza.sk/sip/nat-fw/configuring-nat-traversal-using-kamailio-31-and-rtpproxy-server
>  page.
> >>>
> >>> In one of the steps it says "So, if we are using the Rtpproxy server
> with default configuration, we have to open /etc/default/rtpproxy file and
> uncomment following line regarding of udp socket, that will be sued for
> interconnection:".
> >>>
> >>> I tried to search rtpproxy configuration file, could not locate.
> >>> While making and installing Kamalio proxy, the commands I used "make
> prefix=/usr/local/ all  and make prefix=/usr/local/ install".
> >>> Can somebody point me why rtpproxy config file is missing.
> >>>
> >>> Also the link I am refering to is correct or wrong one.
> >>>
> >>> Best Regards,
> >>> Austin
> >>> _______________________________________________
> >>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> >>> sr-users at lists.sip-router.org
> >>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >>>
> >>
> >>
> >>
> >> --
> >> Carsten Bock
> >> CEO (Geschäftsführer)
> >> ng-voice GmbH i. Gr.
> >> Schomburgstr. 80
> >> D-22767 Hamburg / Germany
> >> http://www.ng-voice.com
> >> mailto:carsten at ng-voice.com
> >> Mobile +49 179 2021244
> >> Office +49 40 34927219
> >> Fax +49 40 34927220
> >> Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
> >> http://www.ng-voice.com/imprint/
> >>
> >> _______________________________________________
> >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> >> sr-users at lists.sip-router.org
> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >>
> >
> >
> > _______________________________________________
> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> > sr-users at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >
>
>
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
> ng-voice GmbH i. Gr.
> Schomburgstr. 80
> D-22767 Hamburg / Germany
> http://www.ng-voice.com
> mailto:carsten at ng-voice.com
> Mobile +49 179 2021244
> Office +49 40 34927219
> Fax +49 40 34927220
> Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
> http://www.ng-voice.com/imprint/
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20111007/a9e80ce7/attachment-0001.htm>