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 ;) _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
