[VoiceOps] Geographic redundancy
mh at markholloway.com
Thu Aug 13 15:45:48 EDT 2009
That's exactly what I was getting at. Thanks..
On Aug 13, 2009, at 12:40 PM, David Birnbaum wrote:
> Zero is nice, but may not be feasible.
> I would say "it works" means that your failure scenario may run from
> "zero", in which case the customer doesn't notice that you've lost
> half your trunking, to what I would consider "minor", which means
> that most of your calls stay up and perhaps dialtone/call setups
> fail for 10-20 seconds.
> Any outage longer than that I would not consider acceptable (as part
> of the five-nines we all aim for).
> On Thu, 13 Aug 2009, Nathan Stratton wrote:
>> On Thu, 13 Aug 2009, Mark Holloway wrote:
>>> When you say "it works" - what is the impact to the customer?
>>> On Aug 13, 2009, at 10:18 AM, Mark R Lindsey wrote:
>>>> We've done it for several carriers, and it works. Supporting all
>>>> the fault-tolerance scenarios can be extremely complex, but it's
>>>> definitely achievable. It introduces a set of requirements on the
>>>> network, and especially on your connectivity to subscribers.
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