Elastix is a unified communications server software that integrates various telephony and messaging functions into a single platform. It is distributed as a free and open-source package, primarily targeting small and medium-sized businesses seeking a cost-effective alternative to proprietary Artificial intelligence-driven communication systems. The software combines an IP PBX, email server, instant messaging, fax server, and collaboration tools, all managed through a web-based interface.
The project originated as a distribution that bundled the Asterisk PBX with the FreePBX graphical user interface, adding its own management layer and additional components. Elastix gained popularity for its ease of installation and administration, allowing non-specialist IT staff to deploy a full-featured telephony system. Its development history includes a significant fork in 2016, when the original project split into Elastix 4 and the community-driven 3CX-compatible branch, though the core architecture remained rooted in the open-source telephony ecosystem.
Core Components
Elastix integrates several established open-source projects. The central call-processing engine is Asterisk, which handles Voice over IP (VoIP) signaling and media. The FreePBX module provides the graphical configuration for extensions, trunks, and call routing. For email, Elastix includes a mail server with webmail access, while the fax server uses Hylafax to send and receive faxes via the telephone network. Instant messaging is provided through an Openfire XMPP server, enabling presence and chat among users. The web interface, built on a custom PHP framework, unifies administration of these disparate services.
Telephony Features
Elastix supports standard PBX functions such as call forwarding, voicemail, call recording, and interactive voice response (IVR) menus. It can connect to traditional public switched telephone network (PSTN) lines through analog or digital interface cards, as well as to VoIP service providers using SIP or IAX protocols. The system includes a call queue manager for handling inbound customer service lines, with features like agent login/logout and real-time queue statistics. Conference calling is supported through the built-in MeetMe module, allowing multiple participants to join a single call. Elastix also provides a softphone client for desktop and mobile devices, enabling remote extensions.
Management and Administration
The administrative interface is a central web portal where system administrators configure all aspects of the telephony system. This includes managing extensions, creating call routing rules, monitoring active calls, and generating usage reports. The dashboard displays real-time system status, including CPU load, memory usage, and active call counts. User-level access can be restricted, allowing employees to manage their own voicemail greetings and call forwarding settings without exposing the full system configuration. The software also includes a backup and restore utility that archives configuration files and call detail records to local or remote storage.
Deployment and Integration
Elastix is typically deployed as a standalone server on commodity hardware, with installation via an ISO image that sets up the underlying Linux operating system. The software supports virtualization, allowing it to run on VMware or KVM hypervisors. Integration with external systems is possible through the Asterisk Gateway Interface (AGI) and Asterisk REST Interface (ARI), enabling custom scripts to interact with call flows. For customer relationship management (CRM) integration, Elastix provides a module that links call data to popular CRM platforms, though this feature requires additional configuration. The system can also connect to Amazon Web Services or Google Cloud for off-site backup or disaster recovery, though this is not a built-in feature and requires manual setup.
Licensing and Community
Elastix is released under the GNU General Public License (GPL), making it free to use, modify, and distribute. The project is maintained by a community of developers and users, with documentation and forums available on the official website. While the original company behind Elastix, Palosanto Solutions, continues to offer commercial support and a paid enterprise edition, the core software remains open source. The community edition receives periodic updates, though the frequency of releases has slowed in recent years as the telephony market shifts toward cloud-based solutions. As of the mid-2020s, Elastix remains a viable option for organizations that prefer on-premises telephony control, but it faces competition from more modern unified communications platforms that incorporate machine learning and deep learning for features like automated call transcription and intelligent routing.