With 3CX users can easily see the presence of other users and avoid unnecessarily making or transferring calls. Presence is displayed in any standards-based SIP client, including 3CX VOIP Client and SIP hardware phones (BLF). Deliver mobility by allowing users to make and receive calls from anywhere - even from home. Unify voice mail and faxes with email by having them all delivered to the users’ inbox.

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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 |
| Integrated fax server | Connect branch offices | Phone provisioning |
| Call conferencing | Enterprise features |