3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box.3CX makes installation, management, and maintenance of your PBX so easy that you can effortlessly manage it yourself, whether on an appliance, on your servers or in your cloud account.

3CX offers a complete Unified Communications solution out of the box.
As an open standards software PBX, installation and management of
your phone system has never been easier.
• Easy self-installation & management
• Slash telco & communications costs
• Boost productivity with UC: Presence, Chat
• Work on the go: Android & iOS clients
• Integrated WebRTC Video Conferencing
• Improve Customer Service: Click2Call & CRM integration
• Install on-premise or deploy in YOUR Cloud

Example Phones:

Yealink SIP-T58A
Yealink SIP-T48S
Yealink SIP-T42S-SFB
Yealink SIP-T40G