[Asterisk-Users] pseudo load balancing?

[Steven Critchfield]

On Thu, 2004-12-09 at 08:19 -0700, Damon Estep wrote:
> In an environment with multiple asterisk boxes, each with a 4PRI card
> and 4PRIs (92 Zap ports) and oversubscription on SIP peers, is there a
> way to get the asterisk box to use the Zap interfaces on another box in
> times of congestion? While the oversubscription ration would be
> optimized for the number of Zap ports, there is always the possibility
> of an "unusual" load.
> 
> What about if a single DID number for a single user were configured to
> come in on any of the PRIs connected to any of the * boxes, and it ended
> up coming in to a different box than the SIP peer is configured for, can
> * route the call?

I think this is the textbook case for needing SER. All your SIP users go
to the SER app and it deligates calls to an asterisk box for PSTN
completion as well as any asterisk box can go to SER and get connected
to a specific SIP user.


> Is 4PRIs too much for a single box (3ghz single or dual cpu) assuming
> all calls are either Zap<--->SIP SIP<---->Zap, no low bit rate codecs
> are used (g.711 only), and every SIP peer also has a voicemail box? 

It somewhat depends on volume of call setup and teardowns. If your calls
are of a decent length, setup/teardown will be sparse enough to not
cause too much trouble.
-- 
Steven Critchfield <critch at basesys.com>