3CX VoIP Phone System

Get modern telephony for your business, at a fraction of the cost

Gradwell phone systems

A powerful phone system for any business

3CX is a VoIP phone system that brings all the benefits of powerful telephony at a fraction of the cost through its simultaneous call license model. Flexible, scalable and feature-rich, it’s a great choice for modern businesses of almost any size. Gradwell is a Titanium level 3CX partner and can provide SIP Trunks that come recommended by 3CX.



Ultimate Flexibility

Access softphones and browser-based web clients on virtually any device

Single tenant

We host a unique secure instance of 3CX for every single business


Save on your office phone bills and eliminate inter-office call charges


Connect with popular CRMs and browsers for huge efficiency savings

Packed with features

Live chat and talk

Add live chat to your website with integrated click to call functionality.

Universal softphones

Make and receive calls from any iOS or Android device and browsers.

Call routing

Deal with calls intelligently with custom routing, forwarding and parking.

Video conferencing

Reliable, high quality video conferencing available as part of your own 3CX system.

Real time status

See the availability of any extension and employee on your system.

CRM integrations

Integrate with popular CRMs for click to call, call journaling and more.

Call recording

Record calls and log analytics with your CRM. Ideal for highly-regulated businesses and staff training. 

Easy control panels

Let your admins and users customise their system from anywhere.

Microsoft Teams integration

Integrate the 3CX system with Microsoft Teams. Only available on Enterprise licenses.

Why choose 3CX from Gradwell?

We’re one of only a handful of Titanium-level 3CX partners across the UK, recognised for helping hundreds of businesses get the most out of 3CX. We work with businesses of all sizes on every aspect of system specifications, installation and ongoing support.

We provide services for every area of 3CX:

3CX Licenses

Buy the right license based on your simultaneous calling and business specifications.

SIP Trunks

Our Trunks are 3CX-preferred and designed to work seamlessly with the system.


Our support and engineering staff are experts in provisioning, setup and usage of 3CX.


We provide a variety of plug-and-play hardware from a wide range of brands.

Unbeatable 3CX hosting

Our 3CX customers get a private instance of the system hosted in a highly resilient dual-server environment. This setup ensures high availability, minimising downtime and ensuring seamless operations. Additionally, our dedicated 24/7 Network Operations Centre provides constant oversight and support, guaranteeing prompt assistance and proactive maintenance whenever needed.
Gradwell 3CX hosting data centre image

Recommended handsets and hardware

All our handsets and devices come pre-configured and ready to make and receive calls with 3CX.
Recommended 3CX handsets and hardware
Gradwell image of Yealink T30

Yealink T30P

Gradwell image of Yealink T30

Yealink T31G

Gradwell image of Yealink T30

Yealink T33G

Gradwell image of Yealink T42

Yealink T42U

Gradwell image of Yealink T46

Yealink T46U

Gradwell image of Yealink T48

Yealink T48U

Gradwell image of Yealink CP920

Yealink CP920

Gradwell image of Yealink CP960

Yealink CP960

£35 £53 £61 £72 £123 £180 £292 £440
Supports headsets Supports headsets Supports headsets Supports headsets Supports headsets Supports headsets HD audio quality HD audio quality
Wall mountable Wall mountable Wall mountable Wall mountable Wall mountable Wall mountable Noise-proof technology Noise-proof technology
1 SIP account 2 SIP accounts Up to 4 SIP accounts Up to 12 SIP accounts Up to 16 SIP accounts Up to 16 SIP accounts 3 microphone array 3 microphone array
2.7" LCD 4.3" HD 7" HD display Integrated WiFi Integrated WiFi
Dual gigabit ethernet Dual gigabit ethernet Dual gigabit ethernet Integrated Bluetooth Integrated Bluetooth
USB 2.0 port USB 2.0 port USB 2.0 port USB 2.0 port
6 metre range 6 metre range with 5-way conferencing
MS Teams compatible

Looking for more options?

We sell a range of handsets, headsets and conference phones from a wide range of brands including Yealink, Snom and Polycom.

Talk to our team for more info

Got existing hardware?

3CX is an open-source PBX, meaning it can support a large variety of existing IP telephony hardware.

View all supported hardware


Transforming community healthcare with Barts NHS Trust and 3CX

See how we helped Barts Health – a large NHS trust – use 3CX to improve patient communications and implement remote working.

Gradwell image of Fair Finance team, who we helped improve their customer communications

Are you a reseller?

We work with hundreds of partners to help them provide 3CX services to their customers.
Gradwell resellers can partner with us. Apply now at gradwell.com

Frequently asked questions

What’s the difference between a 3CX phone system and my current on site PBX?

3CX is primarily deployed as a cloud managed service in a data centre, rather than as a physical on-site PBX. This removes the risk of any expensive repairs, offers a range of extra features and there is no need for any maintenance contracts. Find out more in our Buyer’s Guide to 3CX

How is 3CX different to other phone systems?

3CX is an open-source phone system with a user friendly management interface, which can be easily adapted for a diverse set of business needs.

How do I set up additional lines for my business?

Yes! 3CX offers you access a ‘soft phone’ which is an app installed on your mobile phone. This will allow you to access all the features from your office phone and make calls from your office number.

Can I transfer my existing business number to Gradwell?

As long as we have a porting agreement in place with your current provider, we will be able to move over your business numbers. Our experienced team will complete the necessary porting documentation and manage the order through to completion.

Can I get 3CX on my mobile phone?

Yes! 3CX offers you access a ‘soft phone’ which is an app installed on your mobile phone. This will allow you to access all the features from your office phone and make calls from your office number. See more 3CX features on this page.

Can I become a 3CX reseller?

Yes you can! If you would like more information on reselling 3CX services please check our partner program page.

Trusted by our customers

We are already helping customers across the UK to make the switch. 

We work with in-house IT functions with complex requirements, to business owners and office managers who are new to telephony and communications. Read our case studies to find out more.

Join thousands of businesses

We’ve helped organisations from across the UK take advantage of cloud-based communications tools. Can we help you?
Gradwell office meeting