3CX Windows Based Software PBX

3CX Windows Based Software PBX

3CX Phone System for Windows is a software-based IP PBX that replaces traditional proprietary hardware PBX / PABX. The 3CX IP PBX has been developed specifically for Microsoft Windows and is based on the SIP standard.
Grandstream

Grandstream

Next generation All-in-1 (voice + video + fax + data) IP-PBX system with integrated data router, SIP trunk options, legacy PSTN trunks, analog phone/fax ports, conference bridge, auto attendant & IVR, ACD, unified messaging for voice/fax/video.