I have added some notes to the wiki about getting the sip-server/etc/openser.ini script to work. It by default requires monit a program that I had never come across but decided to give a try. Anyway I am sure a lot more could be added but this is at least a start to get the script operational.
Under Installation | Make openser.init scipt work
http://www.openser.org/dokuwiki/doku.php?id=make_openser.init_scipt_work
Enjoy!