[Freeswitch-users] 2012 VoIP With Virtualization

Tue May 15 18:48:08 MSD 2012

I currently run a testing setup on rackspace cloud, doesn't seem to be too
bad, but then again the call volume is low.

On 15 May 2012 14:43, Chris Mylonas <chris at opencsta.org> wrote:

> tl;dr;  3 opportunities, none are urgent.  virtualization isn't a
> need-to-have but it would be nice to know what is do-able these days...
> i've had the best part of 4 years away from 100% voip, and spent 2 years in
> academia on gentoo plus haven't worked for nearly 12 months just faffing
> about with J2EE stuff and a bit of recent asterisk/kamailio and now
> freeswitch.
>
>
>
> Hi Dario - I am creating a load test at the moment for a queue of 90 calls
> and comparing FS with asterisk for queuing - just reading over my old notes
> for SIPp.  I am very familiar with asterisk through to 1.4 but have been
> doing plain old web sys admin with gentoo in academia for 2 years and
> stayed away from voip and the industry - but times/opportunities are
> changing up to get back into it.   I have lurked in the FS irc channel for
> about 6 months whilst doing this other stuff and now is the time to pull
> the finger out so to speak.
>
> Current opportunities are 2 potential network providers and a start up i'm
> the tech guy for:
> A) This 90 call queue scenario will not be virtualised as it probably
> would not suit queuing which I understand to be a bit hungry for resources
> - it will be a failover set up for an Avaya where the avaya is on-site and
> this hosted-queue will be at the DC.
>
> B) I am working on another startup that does purely conferencing and sms
> (hence my persistence with mod_gsmopen over the last couple of days)
>
> C) Am getting some information on a hosted pabx environment where the
> current set up is 2 asterisk boxes with 700 registrations and about 60
> concurrent calls and where to go with it.  the people that run that show
> haven't told me too much  - i.e. we want to give access to "IT Guys" to
> administer their own customers, we just want to bill the minutes  VS  they
> have their own hosted apps and want to keep everything 100% theirs.
>
> The great thing with (C) is that I will be doing system engineering and no
> support.
>
> I will read through the links you sent.  I am unfamiliar with
> virtualisation in terms of real world usage / performance etc. but have
> dabbled in a convenience-for-development  xen and virtualbox.
> Using openvz in a "you can manage your own customer handsets" is appealing
> - i just had a quick read of it all.
>
> But yes -- it's a load testing thing at the end of the day, and there can
> be no blips, or other voiping artifacts (i.e. digitized voice and the like)
>
> In general:
>
> 1.  No transcoding (ever) - it will all be alaw all the way.
> 2.  All servers have Xeon CPUs.  Whether they are recent or from the last
> 5 years is another story depending on the availability of servers and/or
> cash.  I think there are more servers than cash to spend - rackspace is not
> a problem.  That being said, I just priced up some dells and supermicros to
> have some kind of figures ready.
> 3.  Currently, there are 60 concurrent calls across about 700
> registrations.
>
> Switches and routers are none of my concern, but they use a range of some
> cisco switches, a redback router, extremenetworks switch and some juniper
> firewalls will be in before end of year.
>
>
> There is no rush on any of the above, it's all early days, plus I still
> have some of this non-computer project work I've been doing - manual labour
> upgrades...fun fun fun!!!
>
> Thanks for your links and comments - I look forward to hearing more.
>
>
>
> On 15/05/2012, at 10:44 PM, Saugort Dario Garcia Tovar wrote:
>
> Hi, Chris
>
> That depend of your enviroment. First you have to take a sort of
> scientific approach: define, trial and test again and again until the
> result be consistent.
> Second tell us about your enviroment:
>     - Real hardware: the server that will run your vm. ¿Are blades, small
> server, etc? VM software used (VMware, OpenVZ, XEN, Jails...)?
>     - ¿How you set your VM? cpu, cpu cores, memory, disk, #nic?
>     - ¿How many calls have you handle in the real world?
>     - ¿Transcoding?
>     - ¿Have you tested your VM?
>
> Virtualized enviroment for VoIP are growing. I am consultant for contact
> center services, and I have receive a lot of questions about
> virtualization. A solution provider can give some guidence about sizing and
> technical considerations but at the end the final word is:  YOU HAVE MAKE
> A LOAD TEST TO TEST YOUR ENVIROMENT AND IDENTIFY POSSIBLE ISSUES BEFORE GO
> TO PRODUCTION!!!!
>
> Virtualization solutions will  do their homework to make VoIP a secure
> option. Look this paper for wmware:
>
> http://blogs.vmware.com/performance/2012/01/voip-performance-on-vsphere-5.html
> http://www.vmware.com/files/pdf/techpaper/voip-perf-vsphere5.pdf
>
> On 5/15/2012 4:42 AM, Chris Mylonas wrote:
>
> Hi FS Users,
>
> What is the consensus about using virtualized servers for real-time voice (RTP)?  Even up until a few years ago it was hard to guarantee the CPU cycles to the voice nodes.
> Virtualizing the signalling (SIP) has always been favourable in terms of HA.
>
> If the entire host is under control, is it safe to say - we can virtualise voice?
> Does it depend on what else is shared in the host - say it would be silly to put a high load database server on the same hardware node...
>
> Thanks for your inputs
> Chris
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> --
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> *Dario García*
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>
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