Migration to other server

First make a double backup of your database. Leave one copy in some safe place and second somewhere in server.

Then copy required files like /etc/asterisk/h323.conf or /etc/asterisk/sip.conf or whole /etc/asterisk directory itself somewhere in the safe place. Copy all other files which You think can be important or usefull.

If you are already familiar with MOR, its good idea to Change default passwords.