[Freeswitch-users] Making presence work in a multi-server environment

I’m sure this has been asked and answered, but I sure can’t find it. I have several freeswitch boxes that calls are distributed amongst, and want to get presence working across the cluster. Is there a way to configure the presence database to use ODBC, so that I can centralize it (similar to registrations)? Assuming there is — is that enough? If I have a SUBSCRIBE for dialog info for device X arrive on server 1 and then server 2 handles a call to/from device X, is a NOTIFY going to be sent? Dave