[Freeswitch-users] FreeSWITCH HA + Loadbalancing

[Diego Viola]

Hi David,

What have you used on FS for call center, mod_fifo?

Can you describe your experience with that, I'm currently interested in call
center + FS scenario.

Diego

On Fri, Aug 28, 2009 at 9:01 PM, David Knell <dave at 3c.co.uk> wrote:

> Hi Raimund,
>
> One FreeSWITCH box will be quite enough to handle the call volumes that
> you're talking about, and it ought to be much more stable than the
> Asterisk solution which you've outlined below.
>
> It's probably best to forget about live failover without calls dropping
> - this isn't something that's supported, and there'd be a lot of work to
> do to develop code to keep two boxed in sync.  Once you get used to a
> stable solution - i.e. something which doesn't crash - then live
> failover, HA, etc., will seem somewhat irrelevant.
>
> I recently did some work on an FS-based call center solution - drop me a
> note if I could be of any help with yours.
>
> Cheers --
>
> Dave
>
> > Hello List,
> >
> > I have read the current thread about scalability and I would need some
> > advice about a callcenter setup:
> >
> > First where I come from:
> > I have lot's of problems with an asterisk solution. I have regular
> > crash's and lock-ups, with downgrading and other stuff i got it
> > somewhat stable, but have nevertheless regular hickups. I am desperate
> > and want to get rid of asterisk and I hope that freeSwitch will
> > provide me with a more stable solution.
> >
> >
> > Our Setup (really nothing special):
> > * 1 Asterisk box, New IBM Hardware (3 month old), 2 HE rack server, 3
> > GIG of RAM, Xircom analog switch connected to mobile stations for 4
> > different providers, Digium 4port cards TP400<something>
> > * 8 queues
> > * ~60 agents (which logon, logoff, pause, unpause), not more than 40
> > concurrently online
> > * ~ 7K - 9K calls (well, CDR entries) a day (not that much for a bpx)
> > * Music on Hold in the call-queues
> > * No special announcement
> > * Transfers between calls in queues and different agents as well as
> > non agents (i mention this because we have transfer related chrashes
> > in asterisk)
> >
> > The current Problems:
> > * Lockups with different causes (ranging from calls not terminated to
> > heavy thread locking through the AMI interface)
> > * Crashes and library aborts (pthread, libc, crashes related to music
> > on hold, app_queue, transfers)
> >
> > We used Asterisk: 1.4.23, 1.4.24, 1.4.26rc3, 1.4.26rc5, 1.4.26 and are
> > now back to 1.4.21.2 (stock debian) as anything beyond that is for
> > whatever reason highly unstable for our szenario. Maybe we should have
> > been segmenting the box into one asterisk dedicted to talking to the
> > hardware, one especial for queue/sip handling, i do not know. (all
> > issues are well documented in issues.asterisk.org, but it seems to be
> > very, very difficult to get to the bottom of them as they exist since
> > 1.4.23 as it seems and are open until know and not fixable since month.)
> >
> >
> > Now, I really would appreciate some success-stories on how you guys
> > managed to get a stable pbx system with freeSWITCH in regard of HA and
> > scalability:
> >
> > * How to segment freeSWITCH? Or is it stable enough to handle all in
> > one for such a szenario as outlined above?
> > * What would be the best strategie for High Availability / Failover?
> >       -> I read in the WIKI (featurelist) that Livemigration of calls
> from
> > one box to another should be possible?
> >       -> I was thinking about using memcached for storing all state
> > information so another freeswitch box can takeover calls from the
> > first box if it dies, is this possible? If so, how?
> >       -> Is there anotherway to somehow configure freeSWITCH that in the
> > event of a crash i do not loose the current established calls?
> >
> > Basically I just want a stable PBX where I do not have to fear every
> > day it will core-dump or abort or Lock up. Is freeSWITCH mature enough
> > so i can sleep at night for at least 3 month without a crash?
> >
> >
> >
> > Thank you for your Time and help in advance, and I am more than
> > willing to take all the information gathered here and create a wiki
> > page to help other people with the same questions/problems.
> >
> > best
> > Ray
> >
> >
> --
> David Knell, Director, 3C Limited
> T: +44 20 3298 2000
> E: dave at 3c.co.uk
> W: http://www.3c.co.uk
>
>
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