3CX develops a full range of VoIP telephony software products.

3CX Phone System for Windows is a software-based IP PBX that replaces a proprietary hardware PBX / PABX. 3CX's IP PBX has been developed specifically for Microsoft Windows and is based on the SIP standard - making it easier to manage and allowing you to use any SIP phone (software or hardware).

3CX Phone System for Windows is a software based PBX that replaces a traditional hardware PBX with an open standard, easily manageable IP PBX. It allows companies to cut call costs, PBX administration and increase productivity at the same time.