Asterisk Administration

I have been working as Asterisk Administrator for configuring and maintaining following servers on Vicidial, Freepbx, Trixbox:
- Inbound call handling,
- Outbound call handling,
- Blended Calling,
- Predictive dialing,
- Real – time statistics,
- Real – time Reporting,
- Remote Barging,
- IVR – Interactive Voice Response,
- Hold Music,
- Voicemail System,
- Email Notification for VoiceMail,
- Recordings,
- Automatic Call Distribution,
- Broadcast,
- Lead Scrubbing,
- Server Security