[asterisk-users] Poor man's High Availability solution

[Laurent CARON]

Tim Panton wrote:
> Here's what we do when consulting in this area:
> 
> First decide what the maximum acceptable downtime is, and
> what the costs to the business of that downtime would be.
> 
> Use that as the starting point for the HA design.
> 
> Discuss with the telco what they can do.

They can install a second PRI to route calls when the 1st line is down.

> 
> Avoid complexity at _all_ costs.
> 
>> Since it is possible with BRI cards, i'm wondering if it could be done
>> with PRI.
> 
> No, BRI has a 'bus' topology, PRI is point-to-point.

ok

> 
> Taking a BRI from the same telco into a second asterisk box
> and having them redirect calls to it when the PRI is down
> could be pretty economical.
> 
> In fact if you could persuade them
> to put the BRI in the same hunt group, but at a lower priority the
> switch over would be seamless at their end - all you would need to do
> is ensure the main asterisk powered itself off if it crashed, thus
> dropping the
> PRI.
> 

Since my telco would charge about $700~800/month, i'd rather get the
ISDNGuard way ;)