3CX Phone System for Windows is a software-based IP PBX that replaces traditional 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). A software-based IP PBX / PABX offers numerous benefits:

• Easier to install & manage via web-based configuration interface
• Far less expensive to purchase and expand than a hardware-based PBX / PABX
• Improve productivity with presence, desktop based call control and extension management
• No need for separate phone wiring – phones use computer network, easy hot desking!    
• Delivery mobility by allowing employees to work from home using a remote extension
• Choose between popular IP hardware phones or softphones - no vendor lock in
• Receive & Make calls via the standard PSTN using VOIP Gateways or cards
• Save on monthly call costs using SIP trunks, VoIP providers or the Skype gateway!