I'd use a relay in place of the switch. When the relay is energized, the POTS lines are connected to the server, when the relay is de-energized (power fail) the relay is connected to the power fail phone.
A good selection of relays can be found at: http://www.allelectronics.com Bill On Apr 7, 2005 2:21 AM, Mike Sander <[EMAIL PROTECTED]> wrote: > I know there are work-arounds for this, but I'm going to ask anyway. > > I'm looking for a way to automatically failover a TDM422B (2FXO, 2FXS) > when the power dies. > > This is again for a rather paranoid client. > > Options so far: > - I will be installing a redundant power box in the server with a UPS. > - Wire the FXO to a double-throw switch by hand so if power dies the > client can just flick the switch over from the Asterisk box to the > analogue phone. > > I know the Sipura-3000 will automatically do this, but obviously a > computer cannot set this up on the PCI card with it's last dying gasp for > power. > > Is there any other way this can be done - especially if the box sits in a > room in the basement which is not easily accessible during a power cut, so > the customer doesn't really want to go down there to flick the switch > "override" > > Appreciate your help. > > Mike > > _______________________________________________ > Asterisk-Users mailing list > [email protected] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
