What is 3CX?
As alternative to Hosted PBX, Netcelerate can provide a 
3CX Phone System, an open standard Windows-based IP PBX that provides superior features and flexibility at a far lower cost and replaces traditional PBX hardware phones. It supports popular SIP phones, VoIP providers and traditional PSTN lines. 3CX Phone System's web-based management console makes it easy to configure, eliminating the need for expensive maintenance.
3CX Phone System includes a client (available for Windows, iPhone and Android) that makes call control, conferencing and other unified communications features a breeze. Users can manage their extension and their calls with just a few mouse clicks and avoid using a cryptic phone interface. What's more, you can log in to 3CX from any computer or smartphone to see the status and presence of other users from your office and any bridged offices around the world.
3CX Phone System includes an iPhone and Android client that allows you to make and receive office calls on your iPhone or Android smartphone from anywhere. Save on telecommunications costs by making internal office calls free of charge, and keep your mobile number confidential by using the office caller ID. Never miss that all important call by answering calls made to your office extension from anywhere.
Features Comparison: Free Edition vs Commercial Editions
3CX Phone System is available in several editions based on the number of simultaneous calls (internal & external) your company makes. Upgrades are activated instantly with a license key - there's no need to reinstall 3CX Phone System.
General Phone System Features |
Free version |
Standard |
Pro |
| Call Logging |
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| Call Reporting |
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| Blind Call Transfer |
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| Attended Call Transfer |
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| Call Forward on Busy |
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| Call Forward on No Answer |
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| Call Routing (DID) |
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| Call Routing (Caller ID) |
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| Caller ID |
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| Conference Calling |
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| Conference Rooms |
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| Auto Attendant / Digital Receptionist |
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| Record New Voice Prompts From Phone |
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| Voicemail |
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| Music on Hold |
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| Central Phonebook |
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| Call by Name |
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| Different Prompts for Holidays |
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| Call Parking |
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| Call Pickup |
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| Call Queuing |
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| Call Recording |
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| MWI – Message Waiting Indicator |
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| BLF Status Updates |
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| Intercom |
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| Paging |
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| Ring Extension and Mobile Simultaneously |
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| Send Email Notifications for Missed Calls |
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| Music on Hold Playlist or Line In |
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| Dial Codes |
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Management and Scalability |
Free version |
Standard |
Pro |
| Web-based Management Console |
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| Configuration Wizard |
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| Real Time Web-based System Status |
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| Integrated Web Server |
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| Backup and Restore |
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| Firewall/NAT Friendly Configuration of External Extensions via Tunnel |
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| Microsoft Windows Server Certified |
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| Integrated Enterprise Database (PostgreSQL) |
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| VMware / Hyper-V |
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| Disable an Extension Temporarily |
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| Management of Group Privileges |
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Unified Communications |
Free version |
Standard |
Pro |
| Public SIP ID for Extensions |
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| Advanced Forwarding Rules Based on Caller ID, Time & Type of Call |
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| Receive Voice Mail via Email |
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| Integrate Branch Offices with 3CX Bridge |
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| Standards-based Presence Information |
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| Integrated Fax Server |
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| Receive Faxes via Email as PDF |
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Superior Mobility with 3CXPhone for Windows, Android and iPhone |
Free version |
Standard |
Pro |
| CTI Support (Windows only) |
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| Seamlessly Create Conference Calls |
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| View Remote User Presence |
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| Run as Presence Monitor in Combination with Desk phone (Windows only) |
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| Allow Users to Configure their Own Extension Settings |
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| Make and Receive Calls |
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| Transfer Calls |
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| Shows Incoming Calls |
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| Shows Caller ID |
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| Shows Personal Call History |
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| Divert Calls to Voice Mail |
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| Queue Monitoring (Windows only) |
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| Shows Status of Other Extensions |
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| Plug and Play Provisioning |
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| Manage Forwarding Rules |
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| Manage Softphones from Management Console |
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| Auto Provisioning |
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| Remote Configure |
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| Includes Tunnel to Avoid NAT Problems |
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| Tunnel All VoIP Traffic Over a Single Port |
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IP Phone Management |
Free version |
Standard |
Pro |
| Automatic Phone Provisioning |
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| Manage IP Phones Network Wide from Console |
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| Plug and Play Support for Easy Deployment of IP Phones |
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| Provision all Popular IP Phones with Correct Settings |
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| Restart One or All Phones Remotely |
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| Update Firmware on One or More IP Phones Network Wide |
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| See Firmware Version of Phone |
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Call Center Features |
Free version |
Standard |
Pro |
| Advanced Real Time Queue Statistics |
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| Monitor Queue Status |
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| Review Number of Callers in a Queue |
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| Log Agents In and Out of Queues |
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| Advanced Agent Statistics |
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| Time an Agent Logged In/Out of the Queue |
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| Review the Number of Answered/Unanswered Calls |
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| Average and Longest Wait Time and More |
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| Wallboard |
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| Allow your Customers to Hang Up and Retain their Position in the Queue |
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| The Customer is Called Back When an Agent Becomes Available |
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| Call Back Notification Emails are Sent to the Supervisor |
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| Round Robin Queue |
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| Longest Waiting Queue |
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| Least Talk Time Queue |
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| Fewest Answered Queue |
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| Hunt By Threes – Random Queue |
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| Hunt By Threes – Prioritized Queue |
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| SLA Alerts |
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| Listen In / Whisper / Barge in |
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| Ring / Hunt Groups |
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3rd Party Application Integration |
Free version |
Standard |
Pro |
| TAPI Driver for Integration with Microsoft Outlook and TAP Applications |
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| Microsoft Outlook |
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| Salesforce Integration |
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Optional |
Optional |
| Sugar CRM Integration |
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Optional |
Optional |
| Microsoft Dynamics Integration |
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Optional |
Optional |
| HTTP API to Integrate with any Web CRM |
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| Microsoft Exchange 2007/2010/2013 UM |
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| Microsoft Exchange Contact Phonebook Integration |
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| Microsoft Exchange Auto Attendant Integration |
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SIP Standards Support |
Free version |
Standard |
Pro |
| Fully Supports RFC 3261 |
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| SIP Forking |
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| Establish Standards-based SIP Trunks with other SIP Servers |
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Download the Free Edition here.