FreePBX is a web application. If you’ve looked into Asterisk, you know that it doesn’t come with any “built-in” programming. You can’t plug a phone into it and make it work without editing configuration files, writing dialplans, and various messing about.
FreePBX simplifies this by giving you pre-programmed functionality accessible by a user-friendly web interface that allows you to have a fully functional PBX pretty much straight away with no programming required. Some of the features that FreePBX supports out of the box are:
- Unlimited number of Voicemail boxes
- “Follow Me” functionality
- Ring Groups with calls confirmation (so if, eg, a cellphone is out of range and diverts to voicemail, all the other phones keep ringing)
- Unlimited number of Conferences (limited by available CPU power – about 300 simultaneous users in conferences on a P4 3ghz – 600 with a dual core!)
- Paging and Intercom functionality for man SIP phones that support it.
- Music on Hold (via MP3s, or streamed off the internet)
- Call Queues
- And many other features
FreePBX is built on the LAMPA™ stack (Linux, Apache, MySQL, PHP and Asterisk). It’s a modular system, with click-to-install plugins downloadable over the internet from the online module repository.
FreePBX Features at a Glance:
- Add or change extension and voicemail accounts in seconds
- Native support of SIP, IAX, and ZAP clients (other endpoints are supported through custom extensions)
- Supports all Asterisk supported trunk technologies
- Reduce long distance costs with LCR
- Route incoming calls based on time-of-day
- Create interactive Digital Receptionist (IVR) menus
- Design sophisticated call groups
- Manage callers with Queues
- Upload custom on-hold music (MOH)
- Search company directory, based on first or last name
- Detect and receive incoming faxes
- Share administrative duties
- Backup and Restore your system
- Save audio recordings of calls
- View call detail reporting with asterisk-stat
- View extension and trunk status with Flash Operator Panel
- View conversation recordings with Asterisk Recording Interface (ARI)
Project Sponsored by SANGOMA

3CX Features at a Glance:
- Unlimited number of extensions
- Easy installation and management:
- Plug and Play with IP Phones, Gateways and SIP Trunks
- Centrally manage and upgrade firmware from the management console
- Smartphone Apps for iOS and Android
- Fax & Voicemail to Email
- Click2Call from any browser or CRM
- Website Live Chat & Talk
- Web Conferencing
- Instant Chat
- Status
- CRM Integration
- Advanced
And more…
Get your free 3CX PBX license key for unlimited extensions from the 3CX website and try it out as a FreePBX alternative.