3CX develops a full range of VoIP telephony software products

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.


Are you looking to replace your company’s outdated PBX? With 3CX there is no need to worry about management and installation.

Installation & Configuration is straightforward with 3CX

  • Connect with prominent SIP trunks within minutes with pre-configured templates.
  • Plug-in an IP Phone or Gateway to your network for automatic configuration.
  • Avoid interop Issues with 3CX tested IP Phones.

Through the easy to use management console you can

  • Create, edit and delete extensions and DIDs.
  • Upgrade IP Phone Firmware.
  • Reprovision & reboot IP phones remotely.
  • Import or delete all contacts at once.


With 3CX, deployment of your PBX is straightforward and flexible. Whether you choose to set up in the Cloud or on-premise, 3CX offers a solution for everyone.

  • Use the PBX Express tool to deploy your free Cloud PBX, in minutes.
  • Select from a range of mainstream cloud providers such as Google, OVH, Amazon, 1&1 and many more.
  • Jump aboard the PBX Express and benefit from the 1 year Free Edition License offer.
  • The free Edition License includes: 8 simultaneous calls (up to 25 extensions), 1 SIP Trunk and 5 web conferencing participants.
  • Deploy on existing Windows or Linux machine.
  • Deploy on a MiniPC Appliance.
  • Virtualize and segregate on Hyper-V or VMware.


When it comes to VoIP security, 3CX sets the standard. 3CXs inbuilt security has been exclusively developed to protect your PBX system from attacks.

  • Increased secure web server configuration.
  • Automatic detection & blacklisting of SIP Attack tools.
  • Traffic to 3CX clients is encrypted via SBC.
  • Voice traffic is encrypted via SRTP.
  • Automatic generation and management of SSL certs.
  • Revolutionary VoIP Security with A+ rating from SSL lab.
  • Automatic Failover for instant backup.
  • Encryption between browser and the website ensured via HTTPS.


By using 3CX, your ongoing telco cost savings will be so significant and so will the cost of buying, expanding and maintaining your PBX.

  • Decrease your Phone Bill by 80%.
  • Licensing based on number of simultaneous calls and not extensions.
  • Avoid per extension licensing and pay per PBX instead.
  • Make free Inter-office calls and branch calls
  • Use prominent SIP trunks to reduce outbound call charges
  • Reduce travel expenses with integrated web conferencing
  • Eliminate 800 number phone bills with WebRTC integration
  • Use International DIDs & IP Telephony so customers can call in at competitive rates


With 3CX, you can take your extension wherever you go, from VoIP clients for Android and iOS, Soft Clients for Windows and Mac to clientless web conferencing and the integrated web client; you are guaranteed to be kept in the loop wherever you go.

  • Use your extension from anywhere
  • Free VoIP calls with your smartphone
  • Save battery life with “PUSH” notifications
  • Connect all clients simultaneously via SIP Forking
  • Most Progressive Android & iOS VoIP clients in the UC market
  • Benefit from integrated features such as, Presence, web conferencing, conference calling
  • Initiate IP Phone calls from your desktop with CTI mode
  • Work remotely from anywhere
  • Easily view the presence of your colleagues
  • Use the Receptionist view to administer calls, then drag and drop calls for a swift call transfer
  • Launch calls directly from your CRM; integrate seamlessly with Office 365, Google contacts or Internal Phonebook
  • Automatically obtain reports on customer and agent activities
  • Includes Wallboard and Q-Manager view
The 3CX Client for Android The 3CX Client for iOS Image Map


Gives you easy access to all features of 3CX, including presence, video conferencing, chat and the switchboard

  • Multifunctional Web Client with inclusive multiple features
  • Integrated WebRTC technology resulting in reduced bandwidth usage
  • Click to Call Chrome Extension


3CX’s integrated video conferencing solution, enables businesses to save time and money by hosting virtual meetings, whilst enjoying the benefits of face-to-face communication.

  • Free for up to 5 participants
  • Unlimited users regardless of edition
  • Initiate a conference with one single click
  • Correlated operability between VoIP and video
  • Bandwidth Management and Control
  • Remote control assistance for quick & easy troubleshooting
  • Pre-upload PowerPoint & PDFs before meetings
  • Easy to use polling tool for feedback

Product Editions


3CX Standard Edition is a Microsoft Windows-based IP phone system that replaces the need for traditional PBX hardware. It’s a highly flexible, cost-effective and feature rich phone system that’s designed for mobility and delivers a fully unified communications solution.


3CX Pro Edition includes all the award-winning features of the Standard Edition plus advanced call-centre features, superior call reporting capability and integration with CRM tools and Microsoft Exchange. It also extends unified communications across multiple offices.


3CX Enterprise Edition includes all of the unified communications and management features of 3CX Pro but includes an additional standby license with the same key as the original.The standby license works hand-in-hand with inbuilt failover and can be used with a secondary machine for backup purposes should there be a problem with the primary machine. This solution is ideal for large organisations who can’t afford any downtime.


  • General Features

    Standard Pro Enterprise


    Unlimited Unlimited Unlimited

    Number of Simultaneous Calls Supported

    < 1,024 < 1,024 < 1,024

    Call Logging

    Call Forward on Busy or No Answer

    Call Routing by DID

    Auto Attendant / Digital Receptionist

    Voicemail/ Music on Hold

    Central Phonebook

    Call Transfer

    MWI – Message Waiting Indicator

    Ring Extension & Mobile Simultaneously

    Automatic Pickup on Busy

    Supports SIP Trunks/ Gateways

    Sennheiser Headset Integration

    Extensive Codec Support (G711, G722, GSM, Speex, ILBC)

    G729 Codec Support

    Busy Lamp Field (BLF)

    Call Reporting

    Call Parking / Pickup

    Intercom/ Paging

    Custom SMTP Server

    3CX SMTP

    Custom FQDN

    3CX FQDN

    Configure BLF’s from the Clients

    Hot Desking

    Management and Scalability

    Standard Pro Enterprise

    Web-based Management Console

    Automated Provisioning of Devices

    Real Time Web-based System Status

    Integrated Web Server

    Easy Backup and Restore

    SBC to Configure Remote Extensions

    VMware / Hyper-V Compatibility

    Scheduled Backup

    Connect Remote 3CX PBX Systems (Bridges)

    Scheduled Restore

    Inbuilt Fail Over Functionality

    Standby License

    Unified Communications

    Standard Pro Enterprise

    See the Presence of Your Colleagues

    Receive Voice Mail via Email

    Advanced Forwarding Rules

    Setting Up Conference Calls

    Click2Call Extension

    Receive Faxes via Email as PDF

    Integrated Fax Server

    View Presence of Remote Offices

    Call Center / Contact Center

    Standard Pro Enterprise

    Call Recordings Search

    Call Recordings Management

    Call Queuing

    Call Recording

    Call Flow Designer

    Advanced Queue Strategies

    Advanced Call Reporting

    Real Time Queue Statistics

    Queue Reports

    Barge In / Listen In / Whisper

    Query Customer Name Based on Caller ID

    Ability to Use 3CX Clients API

    Link Company Directory with LDAP / ODBC

    Sync Phonebook with Microsoft Exchange

    Real Time Queue Monitoring


    Switchboard Queue Manager View

    Supervisor can Log Agents In/Out

    Supports External Agents

    Callback if queue full

    CRM Integration / Scripting Interface

    SLA alerting/reporting

    Call Recording Control


    Standard Pro Enterprise

    Android Client

    iOS Client

    Windows Client

    Mac Client

    Web Client

    Manage the 3CX Client from within the Console

    Includes 3CX Tunnel to Avoid NAT Problems

    IP Phone Management

    Standard Pro Enterprise

    Automatic Plug & Play Phone Provisioning

    Manage IP Phones Network Wide from Console

    Restart Phones Remotely

    Update & Manage Firmware Network Wide

    Supports Popular SIP Phones

    Application Integration

    Standard Pro Enterprise

    Office 365 (address book only)

    Microsoft Outlook


    Office 365


    Microsoft Dynamics

    Microsoft Exchange 2013 / LDAP / ODBC

    Google Contacts




    Hotel Module

    Fidelio Certified

    Mitel Compatible

    Multiline TAPI

    Web Conferencing

    Standard Pro Enterprise

    Plugin Free – WebRTC

    One-click Conference

    Meeting Recording

    Remote Control / Assistance

    Screen Sharing

    Unlimited Users

    Participants Included

    25 100 250


Hardware Requirements

Up to 16 sim calls Up to 64 Simultaneous Calls Up to 256 Simultaneous Calls Up to 1,024 Simultaneous Calls


Intel® Core™ i3-3210 Processor (3M Cache, 3.20 GHz) Intel® Core™ i3-3210 Processor (3M Cache, 3.20 GHz) Intel® Core™ i7-3770 Processor (8M Cache, up to 3.90 GHz) Intel Xeon CPU - E5405 2.00 Ghz 2.00 Ghz 2 Processors


2 GB 4 GB 8-10 GB 16 GB



Can be Virtualized

Yes Yes Yes, requires v15 Yes, requires v15


100/1000 Mbit/s 100/1000 Mbit/s 1Gbit/10Gbit 1Gbit/10Gbit

Supported Operating System

3CX (PBX) can be installed on Linux and most versions of Windows. Below is a complete list of supported operating systems.

Supported and Tested Not Supported and Tested
Linux Debian 9 (kernel 4.9) Linux Debian 8 (kernel 3.16)
Windows 10 (Pro, Enterprise) Windows 7 SP1 (Professional, Ultimate, Enterprise)
Windows 2012 and 2012 R2
(Foundation, Essentials, Standard, Datacenter)
Windows 8 and 8.1
(Pro, Enterprise)
Windows 2016
(Essentials, Standard, Datacenter)
Windows 2008 R2 SP1
(Web, Foundation, Standard, Enterprise, Datacenter)
Raspbian Stretch (for 3CX SBC only)



3CX v15 Features
3CX Basic Training
3CX Intermediate Training
3CX Advanced Training