Phone Lines & Calls

Together with our expertise on systems and connectivity we can design, recommend and implement the solution that best fits your business in terms of cost, reliability and resilience.  

From installation, through to support and billing of your monthly (customizable) telephone bill with competitive call tariffs and packages, all controlled through one local point of contact.

PSTN Switch Off Road Map


In 2025, BT will switch off all PSTN and ISDN services.  The PSTN (Public Switch Telephone Network) and infrastructure is ageing and with advancements in digital telephony and increased quality and reliability in internet services, these traditional fixed analogue lines and calls will cease to exist. From 2025, all consumers and businesses will use IP based systems to make calls over an internet connection.

SIP and VoIP

IP based solutions such as SIP (Session Initiation Protocol) and VoIP (Voice over Internet Protocol) are now the top alternatives for businesses.  These solutions offer greater flexibility and resilience, as well as advanced features such as call management and cost reductions due to lower call charges and generous call packages.


Non Geographic Numbers

C.UK also supply Non Geographic numbers (such as 0333 or 0800) and cloud-based number management services enabling you to move any number to the cloud and control direction of the calls via a web-based management tool.

Talk to our local experts

Our Business Phone Line experts are available. Call them for advice and free quotes.