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Is It All Over For ISDN?

In a word, yes!

Without ISDN (Integrated Service Digital Network), the Internet revolution would not have happened as quickly. ISDN replaced slower, dial-up broadband solutions, setting the standard for data and voice communications in the 1990s. At the time, ISDN was revolutionary. But everything has its day.

Technology has taken leaps forward since ISDN was created, with the largest British communications company, BT, set to phase ISDN out by 2025. In 2016, when the competition and markets authority (CMA) cleared the takeover of EE, BT Group had 31% of the broadband market (consumers and businesses). They also had 37.6% of the home phone market and 33.8% of the mobile market. Even after Ofcom forced BT Openreach – the network division – to split from the Group, BT will continue to exert a large influence on the communications market and the services consumers and companies can access in the UK.

Telecoms is a competitive market. Each provider – whether they offer landlines, mobiles, VoIP or unified cloud-based communications – is investing heavily in speed and security to gain market share. Hence the move, in 2015, to phase out ISDN across the BT network within ten years.

In 2020, companies won’t be able to buy new ISDN circuits and services, and then, five years later, this legacy network will shut down completely. If other networks haven’t followed suit, they soon will. And those that run off BT networks (or former BT wires – after the switch to Openreach) will have no choice.

Either way, ISDN is a legacy technology that can no longer keep up with modern demand.

So, what are the new options?

High-speed fibre optic broadband and cloud-based Voice over Internet Protocol (VoIP) is the future, one that many businesses are already embracing. Instead of legacy private branch exchanges (PBXs) taking up space in your office, companies are moving everything to the cloud; with Unified Communications, the way forward.

Telephony and communications are fast becoming digital.

SIP trunking – Session Initiation Protocol – is another cloud-based solution that businesses are embracing, replacing the need for hardware PBX systems. Instead, VoIP services connect phones to networks, improving voice quality, whilst making it easier for companies to communicate through video, web conferencing and screen sharing.

ISDN can’t handle modern communication needs. Internet-based communications are already overtaking analogue solutions. Now’s the time to make sure your business is equipped for a digital future.
br> To get started download our guide to migrating from ISDN to SIP – just click on the link below.

Whitepaper: The Ultimate Guide For Moving From ISDN To SIP download

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We pride ourselves on offering businesses award-winning customer service and first-class advice on every aspect of business communications. We would love to learn more about you and your specific communications needs, so please get in touch.


Manchester University NHS Foundation Trust

The Trust has a long-standing relationship with Incom-CNS and considers them an important partner. The Mitel solution has delivered the increased resilience required for our critical services.

Premier Holidays

The Mitel solution from Incom-CNS has helped us to save money, improve our flexibility to manage seasonal demands, increase our efficiencies and deliver exceptional customer service.

The Range Superstores

Our customers can speak to the right person, first time, and this level of service sets us apart from the competition. In Incom-CNS and Mitel we have the perfect partnership.

Harley Medical Group

Throughout our relationship, I have found Incom-CNS to be very helpful and professional. I would not hesitate to recommend Incom-CNS to other companies.

Stafford and Rural Homes

The Mitel system from Incom-CNS will pay for itself in two years through significantly reduced management costs and savings on our telephone bill in the order of 20%.

Nine St John Street Chambers

We have worked with Incom-CNS for twenty years and trust their advice and technical capabilities. The Mitel platform is a reliable solution that meets our current and future requirements.

Ison Harrison Solicitors

Put simply, the Mitel Unified Communications solution deployed by Incom-CNS delivers less complexity, ease of use and a much lower total cost of ownership to Ison Harrison.

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