[Users] Integrating the Openser for VoiceMail and PBX with Asterisk, For Account

Hi Users, I'm new to Asterisk programming , I'm in working the Voip Technologies by using the OpenSER for my call routing process and Radius For AAA. But in Asterisk i need it for only PBX and VoiceMail, For Account I'm using the Openser + Radius . Main My doubt is that, For Call Routing my using the OpenSER. every thing is fine and Good .. But i need the Voicemail , it forword to the Asterisk Server, that . Is the Openser takes the Accounting part or Asterisk it Take place .... Who did the Database know the User had a voicemail in his voice mail Box... That Databases i need How ? Please Help me .... And Mainly Excuse me in English -- Thanks and Regards *Ravi Prakash Sunkara* *M*:+91 9985077535 *O*:+91 40 23114549 *F*:+91 40 40208727 *ravi.sunkara(a)hyperion-tech.com* *www.hyperion-tech.com*