[Users] Openser+Asterisk Voice mail

Hi Just started Learning OPENSER, installing at my office Now iam able to install and configured with my VoIP provider and iam able to make calls out, using Public IP, not tried yes NAT when i want to voice mail, openser, send email, But iam looking store and retrieve voice message, so i decided to install asterisk and send voice messages to Asterisk as per the site document i have configured iam running OPENSER 5060 port and Asterisk 5090 port on same server As guided document, maded Realtime config with my mysql, working Fine iam able to see both are contacting when i restart sip reload , so i able to see openser log, and console of asterisk Now the problem, when i call extention which is not registered I get fast busy tone, and i dont see any message in Asterisk console, but in the open ser log i can see User Not found can some one help me to achive this but when i dial *86, i can hear voice, saying that no messages, that means asterisk is working any help will be appriciated ram