The Best Business & Enterprise Phone Systems | 3CX (2025)

Cut licensing costs by 80% with no per user pricing

Easy set up

Have your IT team deploy 3CX in a matter of days or even hours. Pre-configured SIP trunks and phones make setup and management super easy.

Do-it-yourself admin

3CX is so easy to manage your IT team can set up - or delegate to department Admins - extensions, call rules, and system configurations with ease.

Cut call costs

Break free from expensive multi-year fixed contracts with a flat annual fee - no per user/per month pricing. Bring your own number.

Hosted or DIY

We let you choose - Windows or Linux, hosted by 3CX or self-hosted on Amazon, Amazon Lightsail, Digital Ocean, Azure or Google.

#1 enterprise phone system hosted or self hosted

3CX is an enterprise phone system hosted in the cloud or self-managed that lets you keep control of your own trunks and numbers too.

It's a complete communications platform - eliminating the cost and management headaches of running multiple systems.

Unlike most other enterprise phone systems 3CX doesn’t charge on a monthly user basis. Instead, you pay once a year - at a very low cost - based upon concurrent calls.

An easy to manage and deploy enterprise phone system - combined with no multi-year contract lock-in's - it's the PBX of choice for 350,000 installs and counting.

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Open-standard advantage

3CX leverages SIP - an open-standard protocol - and WebRTC technology ensuring compatibility with a wide range of VoIP hardware and services. This facilitates easy integration and communication.

Want to self manage and self host?

3CX is easy to manage - your IT can do it. Host 3CX direct via marketplaces on AmazonAzureGoogle and Digital Ocean. Or with 3CX Hosting.

Coming from Avaya or Mitel?

First of all, 3CX is much easier to manage. Secondly - and most important of all - 3CX is a fraction of the price of legacy systems because it's not proprietary to 3CX.

All your office phone system questions answered...

4 good reasons to choose 3CX?

3CX is designed around four core principles. Affordability, simplicity, flexibility, and security. It’s the most affordable PBX on the market, with no per-user fees, saving costs as your team grows. Setup is straightforward, making it easy to manage without needing an IT expert. You also get the flexibility to integrate with tools like Microsoft 365 and CRMs. 3CX also has strong privacy controls in video and call handling to ensure your communication stays secure.

How does 3CX pricing work?

Unlike most other companies, 3CX does not charge on a per user, per month basis for its licenses. Instead, you’ll pay one low flat annual price per system, based on concurrent calls not users. You won’t find a better deal!

Can I bring my own SIP Trunk?

Yes! 3CX works with a leading network of global SIP trunk providers allowing you to own your numbers and control your telco costs.

Can I host 3CX myself?

A 3CX PRO and Enterprise Edition gives you the flexibility to choose your hosting in your own private cloud or on-premise in your office for up to 750+ users. From self-hosted on Amazon, Amazon Lightsail, Digital Ocean, Azure and Google, or on-prem with Windows or Linux, to hosted by 3CX the choice is yours. Test the product for yourself with our 1 month free trial.

3CX integrates with Microsoft Office 365 and Google so admins can sync users and leverage SSO - and users can sync personal contacts and their calendar. One set of credentials for all systems. You can read more about it here.

Does 3CX integrate with Teams Direct Routing?

Yes! The 3CX Enterprise edition for 16 sim calls and above offers Teams Direct Routing integration too.

What makes 3CX one of the most secure?

3CX regularly updates its software to ensure security. Each release undergoes penetration testing and vulnerability assessments using Reversing Labs, Mandiant contributes threat intelligence to enhance security measures. The internal network is secured by Crowdstrike.

Do you have a list of integration Partners in my region?

3CX works with a global network of 10,000+ integration Partners who can offer set up support at a reasonable price.

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