# 3CX Phone System

The 3CX Phone System is the software-based private branch exchange (PBX) phone system developed and marketed by the company, 3CX. Nick Galea is the CEO and Founder of 3CX.
The 3CX Phone System is based on the SIP (Session Initiation Protocol) standard and enables extensions to make calls via the public switched telephone network (PSTN) or via Voice over Internet Protocol (VoIP) services on premises, in the cloud, or via a cloud service owned and operated by the 3CX company. The 3CX Phone System is available for Windows, Linux, Raspberry Pi and supports standard SIP soft/hard phones, VoIP services, faxing, voice and web meetings, as well as traditional PSTN phone lines.

## History

The product was developed by 3CX, an international VoIP IP PBX software development technology company as an open-standards, software-based PBX. First published as a free IP PBX product in 2006, the product was intended to provide a VoIP product for use in a Microsoft Windows environment.
The first commercial edition of the product was launched in 2007. Reviews of the product have noted its easy configuration, management, and hardware compatibility. Smith on VoIP commented in a blog post about 3CX that it was very easy to use. In 2009, it was featured on the internet TV show Hak5. On 7 June 2017, 3CX released version 15.5 with a feature set from WebRTC video conferencing, presence, chat, voicemail and a new Web Client. In the years that followed, Live Chat, SMS and Facebook integrations were added, as well as the Microsoft Teams in the latest V18.
In March 2023, 3CX announced that their desktop client had been taken over by hackers and spread malware after a supply chain attack. The company has confirmed on their website and their community forum. Also, cybersecurity technology companies CrowdStrike and SentinelOne wrote about this hack on their websites, with CrowdStrike mentioning there is suspected nation-state involvement. In response to this, 3CX appointed Mandiant, a renowned American cyber security firm and subsidiary of Google. With their help, 3CX was able to review this incident in full.
In July 2023, 3CX announced the "3CX Small Business". It features a user-friendly setup requiring no specialized IT skills, along with a comprehensive suite of functionalities accessible via as web client, mobile apps and desk phones.

## Features

3CX Phone System consists of a number of software-based components. The PBX, accessed and managed via a Web Client, PWA, Desktop App, Management & Admin consoles, softphone for Windows, and smartphone clients for iOS and Android.
The phone system can be used with either SIP phones or the clients, or a combination of the two. The PBX provides unified communications functionality including call recordings, multi-level IVR, call center features, voicemail to email, fax to email, integrated video & call conferencing, free live chat, SMS & MMS, inbound WhatsApp messaging, additional integrations with Facebook and a number of CRM platforms.

## Release History

| Version | Build Number | Release date |
| v20 - Update 2 | 20.0.2.715 | July 2024 |
| v20 - Update 1 | 20.0.1.731 | May 2024 |
| v20 | 20.0.0.1620 | February 2024 |
| v18 - Update 9 | 18.0.9.31 | May 2024 |
| v18 - Update 8 | 18.0.8.939 | September 2023 |
| v18 - Update 7 | 18.0.7.441 | April 2023 |
| v18 - Update 6 | 18.0.6.908 | February 2023 |
| v18 - Update 5 | 18.0.5.415 | September 2022 |
| v18 - Update 4 | 18.0.4.965 | July 2022 |
| v18 - Update 3 | 18.0.3.450 | February 2022 |
| v18 - Update 2 | 18.0.2.307 | December 2021 |
| v18 - Update 1 | 18.0.1.234 | October 2021 |
| v18 | 18.0.0.1880 | August 2021 |
| v16 - Update 8 | 16.0.8.9 | February 2021 |
| v16 - Update 7 | 16.0.7.1078 | December 2020 |
| v16 - Update 6 | 16.0.6.641 | August 2020 |
| v16 - Update 5 | 16.0.5.611 | April 2020 |
| v16 - Update 4 | 16.0.4.493 | December 2019 |
| v16 - Update 3 | 16.0.3.676 | October 2019 |
| v16 - Update 2 | 16.0.2.910 | 5 July 2019 |
| v16 - Update 1 | 16.0.1.273 | 16 May 2019 |
| v16 | 16.0.0.1581 | 27 March 2019 |
| v15.5 - Update 6 | 15.5.15502.6 | 30 August 2018 |
| v15.5 - Update 5 | 15.5.13105.5 | 1 June 2018 |
| v15.5 - Update 4 | 15.5.10244.4 | 1 March 2018 |
| v15.5 - Update 3 | 15.5.8801.3 | 1 January 2018 |
| v15.5 - Update 2 | 15.5.6354.2 | 1 November 2017 |
| v15.5 - Update 1 | 15.5.3849.1 | 1 August 2017 |
| v15.5 | 15.5.1694.0 | 1 July 2017 |
| v15 SP5 | 15.0.62928.5 | 1 March 2017 |
| v15 SP4 | 60903 | 1 December 2016 |
| v15 SP3 | 59950 | 1 October 2016 |
| v15 SP2 | 59381 | 1 October 2016 |
| v15 SP1 | 56772 | 1 July 2016 |
| v15 | 56008 | 1 July 2016 |
| v14 SP3 | 49169 | 1 February 2016 |
| v14 SP2 | 47020 | 1 December 2015 |
| v14 SP1 | 45826 | 1 October 2015 |
| v14 | 44241 | 1 September 2015 |
| v12.5 | 12.5.37957.880 | 21 October 2014 |
| v12 SP6 | 36097.67 | 6 June 2014 |
| v12 SP5 | 35528.64 | 5 May 2014 |
| v12 SP4 | 34902.6 | 4 March 2014 |
| v12 SP3 | 33517.465 | 3 November 2013 |
| v12 SP2 | 32816.397 | 2 October 2013 |
| v12 SP1 | 32495.362 | 1 September 2013 |
| v11 SP4 | | 1 February 2013 |
| v11 SP3 | | 1 December 2012 |
| v11 SP2 | | 1 November 2012 |
| v11 SP1 | | 1 September 2012 |
| v11 | | 1 July 2012 |
| v10 SP6 | 10.24018 | 1 February 2012 |
| v10 SP5 | 10.22686 | 1 December 2011 |
| v10 SP4 | 10.22052 | 1 November 2011 |
| v10 SP3 | 10.21197 | 1 September 2011 |
| v10 SP2 | 10.20401 | 1 July 2011 |
| v10 SP1 | 10.19547 | 1 May 2011 |
| v10 | 10.19117 | 1 March 2011 |
| v09 SP4 | 9.14901 | 10 November 2010 |
| v09 SP3 | 9.14507 | 16 October 2010 |
| v09 SP1 | 9.13763 | 1 July 2010 |
| v08 - Update 4 | 8.0.10824 | 29 January 2010 |
| v08 | 8.0.9414 | 2 October 2009 |
| v07.1 | 07.01.6589 | 17 April 2009 |
| v07 | 7.0.4249 | 4 December 2008 |
| v06.1 | 6.1.1793 | 12 September 2008 |
| v06 | 6.0.612 | 23 June 2008 |
Table created according to the "3CX Phone System Build History".