To use in the same server, see
https://freeswitch.org/confluence/display/FREESWITCH/mod_verto
Permissions and dial-string
<param name="dial-string" value="{^^:sip_invite_domain=${dialed_domain}:presence_id=${dialed_user}@${dialed_domain}}${sofia_contact(*/${dialed_user}@${dialed_domain})},${verto_contact ${dialed_user}@${dialed_domain}}"/>
To make calls between two servers, using presence, i don't know how.
I'm starting to use mod_verto, so I was trying to get user registration from database
.
Then I
read the source of mod_verto, and figure out that verto doesn't manipule database to save extensions registered.
So,
I think verto doesn't use database and don't manipulate presence
.
Maybe it need some patch to be done, or already have a way.