3CX IP Phone System | ProVu Communications

3CX IP Phone System


3CX is a software-based IP phone system that works with SIP standard based IP Phones, SIP trunks and VoIP gateways to provide a full PBX solution. Offering a complete set of Unified Communications features, 3CX makes the installation, management and maintenance of phone systems easy.

Unlike other software-based PBX's, 3CX licences are charged by number of simultaneous calls required, rather than a number of users. With support for 4 to 1024 simultaneous calls and a range of editions to chose from, you are able to create a scalable, cost-effective solution to meet your customer's needs. Systems can also be expanded with the addition of the 3CX SBC on Raspberry Pi.

With 4 main variants to choose from, users can find the right licence for their business. Choose from StartUP and StartUP PRO for shared instances, ideal for smaller companies or PRO and Enterprise for dedicated instances for larger companies or more complex telephony requirements.

In order to become a 3CX reseller, you will need to become a registered 3CX partner, for more information, please visit the 3CX website.


3CX Editions

Below we list some of the defining features between the different 3CX Editions (features correct as per 3CX version 16 and above).
For the full list of features, check out the 3CX Edition Comparision.

Hosted Self-Managed
Features StartUP StartUP PRO 3CX FREE Dedicated Pro Dedicated Enterprise
Licencing model Annual Annual Annual Annual Annual
Number of Users Hosted: Up to 10 Hosted: Up to 20 Hosted: Up to 120 Self-managed: Up to 4000 Hosted: Up to 120 Self-managed: Up to 4000 Hosted: Up to 120 Self-managed: Up to 4000
Number of Simultaneous calls 4 4 4 Hosted: Up to 32 Self-managed: Up to 1024 Hosted: Up to 32 Self-managed: Up to 1024

Visit the 3CX Edition Comparison for full list of features

Ordering Information

Ordering guide

There are lots of different 3CX licences available, here's a guide to help you select the correct ProVu ordering part code for your system: 3CX Part Code/Ordering Guide.


3CX pricing is based on the number of simultaneous calls, for the full list of 'end user' pricing please visit 3CX Pricing.

Partner Program

In order to sell 3CX you will need to become a registered 3CX Partner. To qualify for the 3CX Partner Program you must be an IT / Telecoms reseller that resells computer hardware, software or services. As part of the partner program terms, you are required to sell a minimum of one 3CX licence per six months. In order to become a registered partner, you will need to fill in a short application on the 3CX website. Find out more information about the 3CX Partner Program.

Certified Phones

Below is a list of fully supported IP Phones, available from ProVu. For the full list of compatible phones, please see 3CX's supported IP Phone guide

Certified Headsets

Below is a list of fully supported Headsets which are available from ProVu. For more information on compatible headsets and how to configure them, please see 3CX's configuration guide for Sennheiser | EPOS headsets

Support & Downloads

Technical details

Useful Links


3CX maintenance entitles you to free updates of the 3CX Phone System for one year. This includes service pack and new version updates. After one year, a maintenance contract is required.