Alright, thanks! I'll just use virtuals for our sip proxies and physical servers for media, like I intended to do. ________________________________________ Van: sr-users-boun...@lists.sip-router.org [sr-users-boun...@lists.sip-router.org] namens Alex Balashov [abalas...@evaristesys.com] Verzonden: maandag 28 januari 2013 18:18 Aan: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List Onderwerp: Re: [SR-Users] Need help understanding/separating signaling from media
It is indeed not generally recommended, due to the extremely real-time, delay-sensitive nature of media and the way VMs can subject a user space process like rtpproxy to distorted I/O scheduling and timing. However, this seems to be less of a problem as virtualisation evolves closer and closer "to the metal", and in any case is unlikely to be an issue for relatively small numbers of concurrent calls, on a non-oversubscribed hypervisor. Still, it is not recommended from a "best practical" point of view, definitely not. Grant Bagdasarian <g...@cm.nl> wrote: >Hello Alex, > >Thank you for the explanation. It's clear to me now. >One more thing, I've read that it's not recommended to have media being >handled by virtual servers, is this also the case when using rtpproxy? >We are using VMWare for virtualization. > >Regards, > >Grant > >________________________________________ >Van: sr-users-boun...@lists.sip-router.org >[sr-users-boun...@lists.sip-router.org] namens Alex Balashov >[abalas...@evaristesys.com] >Verzonden: maandag 28 januari 2013 17:11 >Aan: sr-users@lists.sip-router.org >Onderwerp: Re: [SR-Users] Need help understanding/separating signaling >from media > >Hi Grant, > >On 01/28/2013 11:03 AM, Grant Bagdasarian wrote: > >> I think that the RTP Proxy module does precisely this, but what I >> still don’t understand is how the rtp stream is passed between these >> two agents for each call. > >The Kamailio 'rtpproxy' module goes out to the rtpproxy service[1] and >asks it to engage the call, saying: "Can you please allocate and >provide >me with a pair of ports for each end of this call?" The rtpproxy >process answers, and Kamailio then writes the IP and ports provided by >rtpproxy into the SDP of both the requests and replies involved in >setting up the call. > >The result is that as far as both UAs are concerned, rtpproxy is their >endpoint, and they will send media to it. Kamailio instructs rtpproxy >to bridge both streams. > >When the call is torn down, Kamailio tells rtpproxy to disengage and >deallocate the bridge mapping for those streams. > >-- Alex > >[1] Which may be running on the same host, or may be running on another >host, in a distributed fashion. Kamailio talks to rtpproxy through >rtpproxy's UDP control socket, and more than one rtpproxy may be used, >both for failover and round-robin load distribution. This is readily >baked into the rtpproxy module. > >-- >Alex Balashov - Principal >Evariste Systems LLC >235 E Ponce de Leon Ave >Suite 106 >Decatur, GA 30030 >United States >Tel: +1-678-954-0670 >Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ > >_______________________________________________ >SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >sr-users@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@lists.sip-router.org >http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Sent from my mobile, and thus lacking in the refinement one might expect from a fully-fledged keyboard. Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@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@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users