[Kamailio-Users] Using Asterisk as media server

[Mark Sayer]

Your proposed solution is fine and is employed by many of us in the 
OpenSER/Kamailio community in production environments.

Mark

At 03:23 p.m. 17/03/2009, you wrote:

>Alex, I understand your point and appreciate your input highly, but 
>let's say that asterisk is needed as the media server for other 
>reasons. It may not scale as well as the other solutions but we need 
>them to be there to provide other services. I just wanted to know 
>whether there was any difference aside from the scalabilty issue.
>
>We were under the impression that it was imperative to use either 
>media-proxy or rtp-proxy but after examining in more detail how the 
>2 solutions work we find no reason not to use asterisk as the media 
>proxy as well. Unless of course we are missing the big picture here 
>and surely will find out once we set out to test it. But given the 
>deep knowledge of a lot of people in this forum we deemed necessary 
>to ask about the feasibility of this workaround.
>If somebody detects any flaw on this solution or if there is 
>someting else critical or not that we are missing we would love to hear it .
>
>thank you in advance and thank you Alex again,
>jp
>
>
>----- Original Message ----
>From: Alex Balashov <abalashov at evaristesys.com>
>To: Juan Perez <jperezsip2008 at yahoo.com>
>Sent: Monday, March 16, 2009 6:51:34 PM
>Subject: Re: [Kamailio-Users] Using Asterisk as media server
>
>
>No, because the amount of throughput you get per media/RTP proxy is much
>higher than you would get through something whose entire core is structured
>to behave as a PBX, with all the attendant features and latent event loop
>characteristics.  A media relay does one thing and one thing only, and it
>does it well.  Asterisk does many things, among them media relay.
>
>So, while you could use Asterisk in this capacity, I don't see the point.
>It'd be a waste of time.  Also, you don't really want to get Asterisk
>involved in the signaling layer (as a B2BUA) if you can help it.  It
>introduces unnecessary complexity and possible points of interop problems
>and failure.  With a media relay that is controlled by API hooks into
>Kamailio, you don't have that problem.
>
>On Mon, 16 Mar 2009 15:22:27 -0700 (PDT), Juan Perez
><jperezsip2008 at yahoo.com> wrote:
> >
> > thanks alex, but actually there will be several asterisk servers, managed
> > by the LCR module, that should be OK right?
> > it should be the same as adding several media-proxies or rtp-proxies, am
>I
> > wrong?
> >
> >
> >
> >
> >
> >
> >
> > ----- Original Message ----
> > From: Alex Balashov <abalashov at evaristesys.com>
> > To: Juan Perez <jperezsip2008 at yahoo.com>
> > Cc: users at lists.kamailio.org
> > Sent: Monday, March 16, 2009 3:41:46 PM
> > Subject: Re: [Kamailio-Users] Using Asterisk as media server
> >
> > No, nothing needs to be modified.
> >
> > However, in this scenario you are limited to Asterisk's performance
> > characteristics in terms of the number of concurrent calls that can be
> > handled.  Just about any media relay will be much more scalable and
> > lightweight.
> >
> > Asterisk is a PBX and a nice feature server.  You don't build SIP service
> > delivery platforms out of Asterisk used as a general-purpose call router.
> >
> > Juan Perez wrote:
> >
> >> Hello
> >>
> >> In this scenario, customers behind NAT register in kamailio, records are
> > stored in a db etc. Kamailio uses Asterisk boxes as gateways to send
>calls
> > to PSTN.
> >> Is it possible to use Asterisk as the media server instead of
> > media-proxy or rtp-proxy?
> >> In this case the SDP that Asterisk sends in the 180 message needs to me
> > modified?
> >>
> >> thank you
> >> jp
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >> http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
> >
> >
> > -- Alex Balashov
> > Evariste Systems
> > Web    : http://www.evaristesys.com/
> > Tel    : (+1) (678) 954-0670
> > Direct : (+1) (678) 954-0671
> > Mobile : (+1) (678) 237-1775
>--
>Alex Balashov
>Evariste Systems
>Web    : http://www.evaristesys.com/
>Tel    : (+1) (678) 954-0670
>Direct : (+1) (678) 954-0671
>Mobile : (+1) (678) 237-1775
>
>
>
>
>
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