[asterisk-biz] Enterprise Level VOIP

[Jean-Michel Hiver]

Ron McCarthy a écrit :

> Hello All-
>
> I have looked around quite a bit, and cant seem to find anyway to 
> setup a * box/cluster to have 100% uptime. Does anyone have any 
> articles or knowledge on setting up a system that could be made to 
> handle a server crashing, yet phones still be able to operate, I know 
> this can be accomplished with a backup server and DNS SRV records, but 
> that requires PRI's in both machines and a bunch of mess from what I 
> have read. If that is the only way of doing failover is via a backup 
> server, is there anyway to have all my PSTN connections on one 
> server/box, such as the Cisco Access Servers that provide SIP/MGCP -> 
> PSTN connectivty?

You could set your gateway to send / receive calls from a certain IP 
address (say 192.168.1.200). Then have two machines with identical * 
config (you could use a filesystem such as coda to achieve file 
synchronisation). Finally, use heartbeat (hb from the linux-ha project) 
so that your failover takes over the primary's IP address when things go 
wrong.

You *could* have issue with SIP registrations but on an internal network 
it might make sense (depending on the level of unsecurity you can 
tolerate) for IP phones to have a static IP address and do IP based 
auth. In which case you would have no issues with SIP registrations 
either...

That being said, you still have a single point of failure: your cisco 
box. I agree that it *should* not break, but I'm sure that even cisco 
gear breaks from time to time...

Cheers,
Jean-Michel.

-- 
Jean-Michel Hiver - http://ykoz.net/
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