Perhaps this would do it?
http://wiki.freeswitch.org/wiki/Mod_db

-MC

On Mon, Apr 9, 2012 at 9:25 AM, Fahrwerk Kurierkollektiv (Technik) <tech@fahrwerk-berlin.de> wrote:
Hi all,

As the wiki writes, that mod_hash "provides a non-persistent datastore
for limit data. This data is specific to a particular FreeSWITCH
instance", I'm searching for an alternative.

I would like to setup a callforwarding extension, and using mod_hash at
the moment for storing the target number. After a reboot, of course, the
hash is gone.

Could someone point me at an alternative?

Thanks,
Georg