FreePBX: Open-Source Power, IT Management Required
⚠️ FreePBX requires a Linux server and ongoing IT administration. It is free to download, but it is not a plug-and-play phone system. If your business does not have dedicated IT staff, a managed Cloud PBX is almost certainly the better fit.
📞 FreePBX is a free, open-source web interface for the Asterisk PBX engine. It is maintained by Sangoma Technologies and used by IT teams worldwide to build custom phone systems. It is not a hosted service: your team installs, configures, and maintains it on your own server.
This page explains what FreePBX is, who it is designed for, and how it compares with a managed Cloud PBX service like Voxbi.
At a Glance
✅ Voxbi (Cloud PBX): Fully managed, no server needed, support included, predictable monthly cost.
⚠️ FreePBX: Free software licence, but requires a Linux server, SIP trunk contract, and ongoing IT maintenance. Hidden costs add up quickly.
❌ FreePBX is not a good fit for businesses without in-house IT staff, companies that need vendor support, or organisations that want a simple, ready-to-use phone system.
Detailed Comparison
💶 Pricing
FreePBX core software is free under the GPLv3 licence. However, the total cost of ownership is not zero. You need a server (physical or virtual), a SIP trunk for outbound calls, and paid commercial modules for features such as call recording, conferencing, and CRM integration. Sangoma's commercial version, PBXact, bundles these modules with paid support.
Voxbi offers a transparent per-seat monthly price that includes hosting, features, updates, and support. For most businesses, the predictability of a fixed monthly fee is easier to plan for than variable IT and infrastructure costs.
Voxbi | FreePBX | |
Licence cost | Monthly fee | Free (GPLv3) |
Server required | No | Yes |
SIP trunk included | Yes | No (separate) |
🔧 Setup and Installation
FreePBX is installed on a Linux server, typically via the FreePBX Distro (a pre-built ISO image). The process involves configuring Asterisk, setting up SIP trunks, adding extensions, and managing firewall rules. This requires command-line familiarity and knowledge of VoIP protocols.
Voxbi is provisioned through a web portal. Extensions are added with a few clicks. Phones are auto-configured. For most businesses, setup takes hours, not days.
Choose FreePBX if you have a dedicated IT team that is comfortable with Linux and VoIP configuration. Choose Voxbi if you need to be up and running quickly without technical expertise.
🛡️ Maintenance and Security
FreePBX systems require regular maintenance: software updates, security patches, module updates, and server monitoring. Asterisk-based systems are a known target for VoIP fraud, especially if SIP ports are left open. IT teams must manage firewall rules, fail2ban, and SIP authentication carefully.
Voxbi handles all infrastructure maintenance, security patching, and monitoring on the customer's behalf. There is no server to manage.
If your IT team is small or shared with other responsibilities, the maintenance burden of a self-hosted FreePBX installation can become a significant ongoing cost.
📱 Features and Flexibility
FreePBX supports an extensive range of telephony features through Asterisk modules: IVR menus, call queues, voicemail, call recording, ring groups, and more. Advanced users can write custom Asterisk dialplan scripts for highly specific call flows.
Voxbi covers the standard feature set needed by most businesses: extensions, IVR, call groups, call recording, and mobile app access. It also supports Fixed Mobile Convergence, allowing mobile phones to behave as office extensions.
FreePBX offers more raw flexibility. Voxbi offers a curated, tested feature set with a simpler interface. The right choice depends on whether your team has the skills to manage that flexibility.
🌍 Geographic Coverage and SIP Trunks
FreePBX does not include any calling capability out of the box. You must connect it to a SIP trunk provider to make and receive calls. Mixvoip SIP trunks are fully compatible with FreePBX and Asterisk, covering Luxembourg and the Greater Region with local number porting.
Voxbi includes SIP trunking as part of the service. Luxembourg, Belgian, German, and French numbers are available. Number porting is handled by the Voxbi team.
If you already run FreePBX with a Mixvoip SIP trunk and are considering moving to a managed service, your numbers can migrate to Voxbi without interruption.
Frequently Asked Questions
Can I run FreePBX without any technical knowledge?
It is not recommended. FreePBX requires Linux server administration, VoIP configuration, and ongoing maintenance. Without IT experience, the risk of misconfiguration or a security incident is high. A managed Cloud PBX is a safer starting point for non-technical teams.
Does FreePBX work with Mixvoip SIP trunks?
Yes. Mixvoip SIP trunks are compatible with FreePBX and Asterisk. If you already use Mixvoip as your SIP trunk provider with a self-hosted FreePBX system, that configuration is supported.
What is PBXact and how is it different from FreePBX?
PBXact is Sangoma's commercial version of FreePBX. It bundles the core FreePBX software with paid commercial modules, hardware options, and an official support contract. It is still a self-hosted product: you or your IT team manages the server.
Can I migrate from FreePBX to a managed Cloud PBX?
Yes. If you are running FreePBX with a SIP trunk (such as Mixvoip), your phone numbers can be ported to a managed Cloud PBX service. Call flows, extensions, and voicemail settings are reconfigured in the new platform. The migration is typically handled by the new provider.
Is FreePBX suitable for businesses in Luxembourg?
FreePBX can be used in Luxembourg, but you need to arrange your own SIP trunk for local numbers. It is most suitable for businesses with an IT department capable of managing a Linux-based phone system. For businesses without dedicated IT staff, a local managed Cloud PBX provider is a more practical option.
📅 Ready to explore Cloud PBX for your business?
Start with the provider comparisons or feature guides. If you want expert help, book a short call with a consultant.
Compare Other Providers
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