[Serusers] Multiple sers to mysql & asterish voicemail

Hi,

I am currently setting up a SER platform and would like to use Asterisk for pstn and voicemail. I have three hosts, one machine has the mysql db and a dns with an enum zone. I then have the main sip registrar/proy and the final box is the asterisk server.

My intention is to have an instance of ser running on the asterisk server to verify authentication and check users priviledges for access to the pstn/voicemail and to enforce the Remote Party ID, this will then nat the connection to the asterisk process' sip channel (either running 127,0.0.1.

So is this theoretically sound? And can I have the SER proxy and the SER instance on the * both talking to the same mysql DB?