[asterisk-users] Help with concurrent VoIP calls

[covici at ccs.covici.com]

How are you connecting your land line phones since this is where you
have the problem?  Also, I would not expect very many calls at the same
time with that setup if each call takes 50K you can't get exactly the
maximum anyway, maybe 80% of maximum.

Hope this helps.

Tom Moore <tommym2006 at gmail.com> wrote:

> If you've got a bellsouth dsl connection because of the way their system
> works even with doing qos on the link you can really only do about 8 calls
> before you start to run into problems with their setup.
> 
> Tom
>  
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of John Timms
> Sent: Saturday, November 07, 2009 2:45 PM
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] Help with concurrent VoIP calls
> 
> Hi. I'm having trouble figuring out why I'm not able to make many concurrent
> VoIP calls on my system. I'm not aiming for a huge number, because I have
> purposely bought a low powered system, but I would think that I could get
> more. Here are the details:
> 
> I have a small-form-factor Asterisk server with an Intel Atom 230 CPU
> (1.6 GHz, 533 MHz FSB) and 512 MB DDR2 533. It is running Ubuntu Server 9.04
> with the default Debian package manager installation of Asterisk. (version
> 1.4)
> 
> Here is what is going on: I'm making outgoing calls (with .call files) via
> SIP (using Vitelity's service, if anyone wants to know) with about 55.0 ms
> latency between my Bellsouth DSL connection & their servers.
> I'm using GSM-format prompts with GSM encoding (disallow=all, allow=gsm in
> sip.conf) and I'm able to make about 7 concurrent calls.
> I have a very fast internet connection, so there is still plenty of
> bandwidth, and the "top" command shows that Asterisk is only at about 5% CPU
> and 10% RAM. Even with only 7 calls, a landline phone will "skip"
> occcasionally, but cell phones have perfect quality.
> 
> I don't think that 7 calls is very many, I'll be happy if I can get 10
> good-sounding calls. Can anyone give suggestions? (If this has been hashed
> out elsewhere, I'm happy with a link to more information!)
> 
> Thanks.
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici at ccs.covici.com