Zen Systems · Help centre
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This page covers general questions about our service, billing and 3CX, it isn't a technical support or troubleshooting resource, though a few technical basics are included. For hands-on help, contact support directly.
Recent
The latest from 3CX and from us.
Company news
Security Advisory: PHP Vulnerabilities – CVE-2026-109618 and CVE-2026-109619
Zen Systems has completed remediation for PHP vulnerabilities CVE-2026-109618 and CVE-2026-109619 across its private hosting infrastructure. Customers using managed 3CX services do not need to take action as standard…
Product update
Cyber Security In The New Update
Your phone system holds your customer conversations, call recordings and a direct line to your phone bill. 3CX has published a security checklist for Version 20, and we've turned it into a plain-English guide to what…
Most asked
How does 3CX pricing work?
3CX is an annual licence subscription priced on the number of simultaneous calls your busi…
Talk to a person
Support 03333 440239 · Sales 0115 822 1270 · hello@zen.systems
Office hours 9am–5pm, Monday to Friday. Message us outside those hours and we'll reply within one business day.
News & blog
All news and updates →Case studies
All case studies →From schools to dealerships and charities, how UK businesses run on Zen Systems.

Education
Upgrading telecoms for a leading independent school, on time
A UK independent school replaced its ageing PBX with an on-premise 3CX phone system from Zen Systems, installed during school holidays with responsive UK support and no term-time disruption.

Restoring reliability in a high-stakes testing environment
Restoring reliability in a high-stakes testing environment
A leading UK supplier of advanced test equipment faced repeated communications failures after their in-house IT technician left. Zen Systems completed a full migration to high-availability hosted 3CX in seven days,…

St Anne's Community Services
Restoring, and reinventing, communications for a national charity
A lightning strike knocked out a national charity's head office phone system overnight. Zen Systems responded with an emergency hosted 3CX deployment that grew into a nationwide communications platform.

Keeping business moving with remote-ready telecoms
Keeping business moving with remote-ready telecoms
When lockdown hit, a multi-site UK manufacturer needed immediate telecoms continuity. Zen Systems deployed a hosted 3CX phone system remotely, enabling their Sales and Accounts teams to work from anywhere without…
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Still not sure? Ask us directly.
Tell us what your phone system needs to do and we'll tell you honestly whether we can help — no jargon, no pushy sales call.




