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:

A software-based IP PBX / PABX offers numerous benefits: No need for separate phone wiring – phones use computer network

  • Easier to install & manage via web-based configuration interface
  • A software-based IP PBX is far less expensive than a hardware-based PBX / PABX
  • Employees can move offices without requiring any changes in the wiring or
    IP PBX configuration Choose from the many SIP based hardware phones
    instead of getting locked in with one vendor
  • Receive & Make calls via the standard PSTN using VOIP Gateways
  • Save on call costs with ‘out of the box’ configurations for popular SIP / VOIP providers
System Overview

A Complete 3CX Phone System for Windows consists of the server software, soft phones or SIP hardware phones, and a VOIP Gateway to connect your existing phone lines. A VOIP provider can be used to leverage low cost calls across your user network. The system can use the existing computer wiring (and share the network point with the computer) and can be installed on an existing, non-dedicated Windows server (no need for Linux!) or run as a virtual machine. 

Add a VOIP Provider

Save on costs by making international / long distance calls via a VOIP provider. Create network-wide least-cost rules that route calls based on destination. 3CX provides tested ‘out of the box’ configurations for many popular VOIP providers. 


3CX Phone System includes a unique VOIP Client for every user that can act as soft phone, allowing you to easily make, receive and transfer calls from your computer using a headset. Use 3CX VOIP Client in combination with a desk phone, or simultaneously, to see status/presence of other users, lines and call queues and configure extension preferences. 

Unified Communications

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. 

Provision phones automatically

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 update. 

Web based Console

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. 

Manage Extensions

Scale to more extensions simply by adding SIP phones and configure user preferences with a few mouse clicks. Phones can be moved around the office without the need for any configuration or patching – saving valuable administrator time! 

User Portal

With the My-phone user portal feature in 3CX Phone System, users can easily configure their extension preferences. Forward calls to voice mail or to another telephone extension or external number – even a mobile phone number – when the phone is not answered or busy. The My-phone portal is accessed via a browser and is so simple that you don’t need the IT Manager to do it for you! 

Integrated Fax Server

3CX Phone System includes a fax server that allows the whole network to send and receive faxes. Faxes are received via email as PDF files, whilst these are sent using the popular Microsoft Windows Fax feature, seamlessly integrated with Office. Time to get rid of that old fax machine! 

Call Conferencing

3CX allows you to easily setup conference calls that include employees from local and remote offices, as well as, external callers. Leverage 3CX bridge infrastructure to make free conference calls. Easy ad hoc guarantees flexibility – no need for complicated, costly and unreliable conference call services. 

Using VOIP Gateways

With 3CX Phone System you can continue to make and receive calls on your existing phone lines using a VOIP Gateway. 3CX includes out of the box configurations for leading VOIP Gateways. 

Line Management

With 3CX it is easy to manage your phone lines and DID numbers. For example, to route a particular line or DID number to a different extension, click on the line in the management console and make the relevant changes. 

Outlook & CRM integration

With 3CX Phone System you can initiate phone calls directly from Microsoft Outlook or popular web based CRM packages such as Salesforce.com. Just click on a contact to automatically dial the number and optionally log the call. Forget about dialing phone numbers again! 

Connect Branch Offices

With 3CX, remote/branch offices can be easily connected so that all inter-office calls are set-up as internal calls and therefore FREE. You can also setup bridges with customers or partners that use 3CX or other SIP PBXs and eliminate phone charges. Watch business communication improve! 

Enterprise Features

3CX Phone System includes enterprise level features as standard. Set-up auto attendants/digital receptionists and automatically direct calls. Queue calls and distribute to agents as they become available. Page groups of users to broadcast a message or call a single user via intercom. 3CX also integrates a complete voice mail system.