Replace Your ISDN System with a Fully Managed 3CX Phone System
No licences. No complexity. No long-term contracts.
From just £32/month per system (typically under £3 per user)
Unlimited UK calls
Unlimited UK landline and mobile calls – no per-minute charges or surprise bills.
Fully Managed 3CX System
We host, configure and manage your entire PBX – no licences, no setup headaches
UK-Based 3CX Support
Fast, knowledgeable support from real engineers — not ticket queues and delays. Award Winning support 24/7.
Fraud & Threat Protection
Built-in protection against fraud, DDoS attacks and unauthorised access.
Multi-carrier SIP network
Enterprise-grade SIP network ensuring reliable, high-quality calls.
30-Day Contracts
Simple 30-day rolling contracts – stay flexible with no long-term commitment.
3CX Phone System Pricing
Build your system and see exactly what it will cost
✔ No Licence Fees ✔ No Hidden Costs ✔ 30-Day Contract
If you need help or advice over the phone, feel free to contact us
* UK calls subject to fair and standard business use (typically between 1,500 and 2,500 minutes per channel per month). To protect the integrity of the Unlimited Calls service for all users, customers whose usage exceeds normal business usage patterns may be moved to an appropriate fixed usage bundle. This service is intended for normal UK business calling and is not designed for high-volume outbound calling environments such as call centres. Usage may be periodically reviewed to ensure the service remains suitable for the customer’s calling profile. The Unlimited Calls plan is designed for normal UK business use and is not intended for high-volume outbound calling environments such as call centres, predictive diallers, or automated calling systems.
** UK Mobile Calls included in SIP Pro or SIP Unlimited are call to the major mobile networks only: o2, Three, Vodafone, EE and Orange. Calls to other mobile networks are charged at 2p/min. International and Premium calls are charged at competitive rates from 2p /min (all chargeable calls subject to 1 min minimum charge)
What You Can Do With Your 3CX Phone System
A modern 3CX VoIP phone system gives your business far more than just calls — it brings together voice, video, messaging and collaboration in one easy-to-use platform.
Video Conferencing & Web Meetings
Hold face-to-face meetings at the click of a button with built-in 3CX video conferencing.
No apps or downloads required – it works directly in your browser, making it easy to connect with your team and customers from anywhere.
Digital Receptionist (IVR Menu)
Automatically route calls to the right person or department with a fully customisable digital receptionist.
Create menus, upload greetings and manage call flow without needing technical expertise.
Easy-To-Use & Manage
The intuitive web-based admin panel makes it simple to manage users, extensions and call routing.
No specialist knowledge required — everything is designed to be quick and easy to configure.
Work From Anywhere
Use your business phone system on mobile, desktop or browser. Make and receive calls, check voicemail and manage contacts wherever you are.
Call Reporting & Insights
Get detailed call reporting, analytics and performance insights to help improve customer service and team productivity.
Easy to Manage — No Technical Expertise Needed
Simple, Intuitive Dashboard
View system status, active calls and key information at a glance. Everything is clearly laid out and easy to navigate.
Manage Users & Extensions Easily
Add users, assign numbers and configure call routing in seconds — no complex setup required.
3CX Mobile App
Download the Mobile App for each user and take the extension on the road without customers realising. It’s auto-configured from a QR code, so no fiddly configs to worry about.
3CXpress FAQs
How many SIP Channels do I need?
SIP channels are effectively the number of “lines” you have, the number of simultaneous incoming and outgoing calls. It varies for each business, but a general rule is 4 staff per SIP channel. For businesses or departments that are heavily phone-based, like a support team for example, you might want one SIP Channel per staff member because they need to potentially be on the phone all the time.
What's the contract term for this 3CXpress services?
Simple 30 day rolling contracts on all Business SIP Trunk UK plans. Terms are monthly in advance with credit card or DD setup on file. You can also pay annually in advance which equates to a 15% discount. SLA’s up to 3 years are available on request.
What calls are included free?
On our Unlimited SIP plan, calls to UK numbers starting 01, 02, 03 and most 07 (mobile) are included free of charge with no limitations on call length subject to our Fair Usage Policy. Mobile calls are only free from the major Tier1 providers: O2, Three (H3G), Vodafone (inc CW), Orange and EE. All other “mobile” calls are charged.
What is the FUP and why do you have one?
On our SIP Unlimited plans our FUP is very generous and designed to ensure all normal business/organisation users have all of their UK Geographic and UK Mobile calls included without additional charge. This is a soft limit of between 1500 and 2500 minutes per channel per month – which is 99% of all of our current users comfortably. We do monitor usage and very high users (like outbound call centres) will be moved to our fixed 4000minute plan where appropriate. Keeping our Unlimited plan essentially unlimited for every user is very important.
What happens if I breach the FUP?
Sometimes you might find you make an extraordinary amount of outgoing calls for one reason or another, which is fine, we’re happy to let it slip once or twice a year – it should all balance out generally and no harm done. However, for 2 consecutive breeches, or 3 in a year, we reserve the right to automatically move you to a fixed bundle plan and charge any excess calls. This really does very rarely happen, for 99% of all businesses, the FUP is more than enough.
Is there any downtime migrating my numbers from PSTN/ISDN or another SIP provider
No, we fully manage the migration process for you to ensure no downtime. The SIP service should be setup in advance so that as soon as the numbers flip, they route to your new SIP PBX. When switching SIP providers, running both your old and new SIP trunks side by side during the 7-14 day transfer window is the safest method to ensure no lost inbound calls and fully operational outbound
What version of 3CX does this come with?
3CXpress is a special version of the PRO licence that allows us to multi-tenant several companies on the same systems – so we have one massive licence for all users rather than a single small licence. Almost all the normal 3CX Pro features are available and work as normal – same admin panel etc – shared address book, 365 and CRM integration are available on dedicated hosting only. Everything else is the same and each PBX is fully secured and independent. Your PBX does reside on shared server infrastructure but this actually helps in terms of performance over a lower-specced dedicated hosted solution which might struggle at times. However, for more that 12 lines, 40 or so staff, we do suggest that a 3CX hosted solution would be more cost effective and provide better overall value
