[SR-Users] Kamailio RTP Proxy Questions

Fri Oct 7 16:32:04 CEST 2011

Hi Carsten
Many thanks to you.

Now I am able to run kamailio and rtp proxy properly.

Thanks
Austin

On Fri, Oct 7, 2011 at 6:51 PM, Carsten Bock <carsten at ng-voice.com> wrote:

> Hi Austin,
>
> you could simply add dlg_manage() for INVITE's directly after your
> "route(REQINIT)" request + a similar check in the "onreply_route".
> If you use rtpproxy_destroy() it will only destroy the current
> RTP-Session, not all of them.
>
> Kind regards,
> Carsten
>
> 2011/10/7 Austin Einter <austin.einter at gmail.com>:
>  > 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
> >
> >
> > _______________________________________________
> > 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
>
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