[Asterisk-Users] High(er) availability

[E. Versaevel]

Hello,

If one would like to build a redundant Asterisk setup, would it be possible
to exchange the locationdb for the SIP  users between then?

IE, the following setup:


SIP Phones  -------------- Asterisk ------------------------  SIP carrier
                  |                               |
                  ------- Asterisk (standby) ------

Asterisk is used as a PABX in this setup, so the sip phones register
themselves at the asterisk machine and the asterisk machine calls out if
necessary. 
What I would like to be able to do is if the first asterisk machine fails I
want to have a 2nd machine standby. 
So the standby asterisk monitors the first asterisk and in case of a failure
the standby asterisk takes over the IP of the 1st asterisk so the services
continues (sync the conf file with rsync for example), however if the phones
use a host=dynamic they wont be able to be called until they have
reregistered themselves at the backup asterisk. Is there a SER like t_relay
kinda thingy to let the backup know the locations of the Sip Phones?

Kind regards,

E. Versaevel