[Asterisk-Users] Re: regexten

[Wai Wu]

Any thing better than five-nines is a much better sale pitch. LoL. BTW.
My Cisco 7960s alows for a entry of a backup proxy. 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tony
Mountifield
Sent: Friday, March 17, 2006 4:04 AM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] Re: regexten

In article
<645FEC31A18FE54A8721500CDD55A7B602C1538F at mail.oneeighty.com>,
Douglas Garstang <dgarstang at oneeighty.com> wrote:
> A few days ago I didn't realise that the phones only registered to one

> Asterisk box. If I did, I wouldn't have spent hours today trying to 
> get something working.

I would have thought that it was a function of the phone how many
servers it could register with, not a limitation of Asterisk.

There are phones that can have more than one "presence" (line). I have
never played with one, but I wonder if it is possible to get one to
register as the same extensions number on two different servers.

> Is this really the best pure Asterisk HA solution that's out there 
> right now? I think it needs a little work.

I've been watching your trials and tribulations, and I wonder how often
you are expecting an Asterisk box to go down? I have some Asterisk boxes
and other Linux boxes with 200-300 days uptime.

If you have your phones register on a 2-min interval, then provided
Asterisk keeps running for (2min / 0.001%) = 139 days or more, then you
have "five-nines" (99.999%) availability.

And don't forget that if the phones re-register at 2-min intervals
randomly spread, the AVERAGE downtime after a failure would only be one
minute.

It then becomes a question of whether it is cost-effective to strive for
even better than that.

Cheers
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org
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