[asterisk-users] PRI Splitter

[Karl Fife]

> > Look at this brand new failover device:
> >
> > http://www.rhinoequipment.com/1portfail.html
> >
> > http://www.rhinoequipment.com/Single%20Port%20Failover%20Datasheet%201-22-2008.pdf
> 
> 
> Interesting !
> I didn't know this one.
> What happens if the PC supporting this card is powered off ?
> Do you have an idea of its price ?

This is an important point:  Not only does the loss of PC power NOT
present a problem, is the main DESIGN element.  If the PC/Server powers
off, the relays naturally de-energize, which by design, PASSES the
service to the failover port (to the port connected to your spare server
or analog devices).  

While by itself that would be a pretty good design, there would be a
vulnerability, because of course it's possible to have Asterisk crash
while the server is still happily powered on.  Therefore the Rhino
failover device incorporates another design element:  If you choose, you
can enable its watchdog system.  If asterisk stops responding to a
periodic message, It knows that Asterisk is down, and fails over your
services to the other server or analog devices EVEN IF the power is
still on at the main server!

-Karl