Freedom251 › Business Phone Systems
FreePBX
What FreePBX is
FreePBX is an open-source IP PBX for building a customizable business phone system. Its web-based graphical interface manages Asterisk and includes calling queues, conference bridges, ring groups, IVR, voicemail, call transfer, call waiting, and call screening. The site describes the software as completely free to download and use, with an auto attendant, advanced call routing, voicemail transcription, and desktop and mobile apps. FreePBX supports Linux, web, Android, iOS, and self-hosted deployments. Version 17 can be installed with a Debian shell script or an ISO, either on-premises or on a cloud-friendly host. Debian 12 instructions specify at least 2 GB RAM and 20 GB of disk space. The software uses open standards and is described as compatible with most commercial telephony hardware and SIP endpoints. CRM Link lists Salesforce, Zoho CRM, SugarCRM, SuiteCRM, ConnectWise, and Zapier Apps, plus an API for other CRM software. Support includes community forums and a documentation wiki; Sangoma offers paid technical support and commercial modules under one-year or 25-year licenses. Upgrading from earlier versions requires a fresh installation and data transfer.
Who it suits
FreePBX suits organizations wanting a self-hosted or on-premises business phone system they can tailor to their needs. It is also relevant to teams needing Asterisk management, telephony hardware compatibility, and CRM connections.
What it does well
- Free to download and use
- Web GUI for managing Asterisk
- Advanced routing and voicemail transcription
- Open standards and SIP endpoint compatibility
- Community and paid support options
What to know first
- Version upgrades require fresh installation and data transfer
- Debian installation lists 2 GB RAM and 20 GB disk
- Commercial modules use separate licenses
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Starter Bundle — 1 Year License | Conference Pro · Extension Routing · Fax Pro · Page Pro · Park Pro · SysAdmin Pro | On request |
| Starter Bundle — 25 Year License | Conference Pro · Extension Routing · Fax Pro · Page Pro · Park Pro · SysAdmin Pro | On request |
| Advanced Bundle — 1 Year License | Appointment Reminder · Caller ID Management · Class of Service · Call Recording Reports · CRM Link · PINSet Pro | On request |
| Advanced Bundle — 25 Year License | Appointment Reminder · Caller ID Management · Class of Service · Call Recording Reports · CRM Link · PINSet Pro | On request |
| Call Center Bundle — 1 Year License | Caller ID Management · Class of Service · CRM Link · Outbound Call Limit Module · PINSet Pro · Queue Reports | On request |
| Call Center Bundle — 25 Year License | Caller ID Management · Class of Service · CRM Link · Outbound Call Limit Module · PINSet Pro · Queue Reports | On request |
| Everything Bundle — 1 Year License | Appointment Reminder · Caller ID Management · Class of Service · Conference Pro · Call Recording Reports · CRM Link | On request |
| Everything Bundle — 25 Year License | Appointment Reminder · Caller ID Management · Class of Service · Conference Pro · Call Recording Reports · CRM Link | On request |
As freepbx.org lists them, read 21 Sept 2026. The maker's own page has the final word.
Verdict
FreePBX provides a broad, free foundation for customized IP phone systems across self-hosted and other supported environments. Plan for installation resources and migration work when moving from an earlier version.
Facts from FreePBX's own pages
- Auto attendant
- Yes · freepbx.org, 21 Sept 2026
- Call routing
- The built-in feature list includes a calendar with third-party integration and flexible call routing features. · freepbx.org, 12 Oct 2026
- Commercial modules
- Sangoma sells commercial modules under one-year and 25-year licenses; the page says one-year licenses include support and must be renewed annually. · freepbx.org, 12 Oct 2026
- Core features
- Listed built-in features include calling queues, conference bridge, ring groups, IVR, voicemail, call transfer, call waiting, and call screening. · freepbx.org, 12 Oct 2026
- Cost
- The site says FreePBX is completely free to download and use. · freepbx.org, 12 Oct 2026
- CRM integrations
- The CRM Link add-on lists native support for Salesforce, Zoho CRM, SugarCRM, SuiteCRM, ConnectWise, and Zapier Apps, and includes an API for other CRM software. · freepbx.org, 12 Oct 2026
- Desktop and mobile apps
- Yes · freepbx.org, 21 Sept 2026
- Free plan
- Yes · freepbx.org, 21 Sept 2026
- Hardware compatibility
- FreePBX says it is based on open standards and compatible with most commercially available telephony hardware and SIP endpoints. · freepbx.org, 12 Oct 2026
- Install options
- FreePBX 17 can be installed with a Debian shell script or an ISO, on-premises or on a cloud-friendly host. · freepbx.org, 12 Oct 2026
- Install requirements
- The Debian 12 installation instructions specify a host or virtual machine with at least 2 GB RAM and 20 GB disk. · freepbx.org, 12 Oct 2026
- Management
- FreePBX provides a web-based GUI for managing Asterisk. · freepbx.org, 12 Oct 2026
- Product
- FreePBX is an open-source IP PBX that provides tools to build a phone system tailored to users’ needs. · freepbx.org, 12 Oct 2026
- Security
- The getting-started feature list includes secure communications. · freepbx.org, 12 Oct 2026
- Support
- FreePBX support options include community forums, a documentation wiki, and paid technical support from Sangoma. · freepbx.org, 12 Oct 2026
- Upgrade limit
- The FreePBX 17 page says upgrades from previous versions require a fresh installation and data transfer rather than a script or upgrade utility. · freepbx.org, 12 Oct 2026
- Voicemail transcription
- Yes · freepbx.org, 21 Sept 2026
- Who it serves
- The site describes FreePBX as a customizable, scalable business phone system for users on any budget. · freepbx.org, 12 Oct 2026
Where FreePBX stands on Freedom251
- Business Phone Systems#4 of 167