About this site
PBX Help Hub (pbxhelphub.co.uk) publishes independent guidance for UK organisations that run business phone systems.
We are not affiliated with or endorsed by Avaya, Mitel, Cisco, NEC or any other manufacturer. Product names belong to their owners.
Our guides are general information
We check our guides carefully, but phone systems differ by model, software release and set-up. A guide isn't advice about your particular system, and our quizzes and calculators give a starting point rather than a diagnosis. Check anything important with your maintainer or the manufacturer's documentation.
Making changes to your system
Our guides favour checks that only look at settings. If you change a live system, you do so at your own risk, so take a backup first and stop if you aren't sure.
If emergency calling, lift phones, alarms or on-call lines are affected, don't rely on this site. Contact your maintainer or carrier straight away. See when to escalate.
Reviews, assessments and support
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Our liability
Nothing in these terms limits liability for death or personal injury caused by negligence, for fraud, or for anything else the law doesn't let us limit. Subject to that, the site is provided free of charge and as it stands, and we aren't liable for losses arising from using it or relying on it, including lost business, lost calls or the cost of repairs.
If you are a consumer, these terms don't affect your legal rights.
Changes and governing law
We may update these terms by changing this page. They are governed by the law of England and Wales, and its courts have jurisdiction. Last updated: 9 November 2026.