The web-based interface makes 3CX Phone System configuration and management a breeze. No need to learn an obscure, archaic phone system interface or pay for the phone system supplier to make configuration changes. You can monitor phone system status, including which extensions and PSTN lines are busy, and more, from a web browser.

| System overview | Using VOIP gateways |
| Add a VOIP provider | Manage extensions | Line management |
| Softphone | User portal | Outlook & CRM integration | Unified communications |
| Integrated fax server | Connect branch offices | Phone provisioning |
| Call conferencing | Enterprise features |