Callware VoiceOne is an easy to use web based GUI for the Asterisk PBX.
It gives full control over settings through a simple admin panel. You can manage extensions, preferences, POTS/ISDN/VoIP trunks, queues, and rules sets and dynamically create IVRs.

Features
- Client/Server architecture based on Web services
- Relies on Asterisk Realtime Architecture (ARA)
- SIP and IAX extensions management (support for Zap/mISDN soon added)
- Remote offices via IAX with RSA public key encryption
- Supports VoIP and traditional Telco providers
- Powerful IVR creation system
- Queues system management
- Customizable user’s profile
- Powerful configuration of mISDN ports/interfaces (thanks to guys at beroNet for their support)
- Policies system for users/groups management
- SIP, IAX and mISDN general/default options configuration
- Static-like text editor for conf files
- Easy setup wizard
- lots more…

References
www.VoiceOne.it: The official VoiceOne website :: sponsored by Kleis, siti web verona
VoiceOne Project pages: The Sourceforge project page, you’ll find a forum, a bug tracker and the download page