3CX Phone System can automatically configure popular SIP hardware phones with the appropriate extension settings. Advanced phone features such as a central company phone book, MWI (Message Waiting Indicator), BLF (Busy Lamp Field – to monitor status of other extensions) and Intercom/Paging are automatically configured and updated.

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| System overview |
| Web-based console | 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 | Call conferencing | Enterprise features|