Features: Free edition vs Commercial editions

	FREE Edition	Small Business Edition	Professional Edition	Enterprise Edition
Extensions & Calls
Number of Extensions	Unlimited	Unlimited	Unlimited	Unlimited
Number of Simultaneous Calls	Up to 8	Up to 8	Up to 16	Up to 32

For prices and details on upgrade insurance/maintenance and email support click here.

	FREE Edition	Commercial Editions
General Phone System Features
Personal Call History
Call Logging
Call Reporting
Blind Call Transfer
Attended Call Transfer
Call Forward on Busy
Call Forward on No Answer
Call Parking
Call Pickup
Call Routing (DID)
Caller ID
Conference Calling^*
Auto Attendant / Digital Receptionist
Dial by Name
Voice Mail
Music on Hold
Ring Groups
Hunt Groups
MWI - Message Waiting Indicator
Call Queueing
BLF Status Updates
E-mail & live chat support

Management Features
Web-based management console
Real time web-based system status
Integrated web server, no web server required
Phone provisioning

Unified Communications & Mobility Features
Public SIP ID for extensions
Supports Exchange 2007 UM
Branch Office Integration
Sends voice mail via email
Salesforce integration
Fax
3CX bridge: connect branch offices
Call recording
Remote configuration of extension options

3CX VOIP Client
Compact Windows system tray applet
Included mini VPN – firewall friendly
Shows status of other extensions
Shows incoming calls
Shows caller ID
Shows personal call history
Ability to place calls
Ability to divert calls to voice mail
Ability to transfer calls
TAPI driver for integration with Outlook
Shows callers in queue

Devices
Supports SIP hardware phones
Supports SIP software phones
Supports popular SIP VOIP Gateways
Supports popular SIP VOIP Providers
SIP Trunking support

Scalability
Integrated enterprise database (PostgreSQL)
Ability to run on a Virtual Machine
Restore and backup to compressed XML file
High performance web server (Apache)
Supports Windows clustering

* This feature is provided through the SIP phone - the phone has to support conferencing.