If you are looking for an IP PBX like Asterisk™ but don’t want to run Linux, then try out 3CX Phone System for Windows. It’s a SIP standard based IP PBX for Windows, easy to use and a Free edition is available! Why spend hours configuring Linux and Asterisk when you can install 3CX Phone System in under 10 minutes!
3CX Phone System is a software based PBX that will completely replace your traditional PBX / PABX. Use it with standard SIP hardware or software phones, and with SIP / VoIP Gateways. Compared to Asterisk, 3CX is also a lot easier to configure with VoIP Gateways.
3CX Phone System features include Voice mail, Auto attendant, Hunt Groups, Web based configuration and more.
Note: Asterisk is a trademark of Digium Corporation