Ireland PSTN and ISDN Switch Off: What Irish Businesses Need to Know

The Ireland PSTN and ISDN switch off is changing the way businesses think about their telephone lines and communications infrastructure. As traditional copper-based services are gradually replaced by modern IP and fibre-based technology, Irish organisations need to understand what they currently rely on and how they can prepare for the future.

For businesses, this is about much more than replacing an old office telephone. PSTN and ISDN services may be connected to phone systems, alarms, lift phones, payment terminals and other equipment. Preparing early gives your organisation time to identify these dependencies and plan a smooth migration.

In this guide, we explain what the Ireland PSTN and ISDN switch off means, what businesses should check and why the transition could be an opportunity to modernise your communications.

What is the Ireland PSTN and ISDN switch off?

PSTN stands for Public Switched Telephone Network. It is the traditional telephone network that has supported fixed-line voice communications for decades.

ISDN stands for Integrated Services Digital Network. It was introduced to allow voice and data services to operate digitally over traditional telephone infrastructure and has been widely used by businesses.

However, the way businesses communicate has changed dramatically.

Cloud applications, remote working, mobile devices, video meetings and online customer service are now part of everyday business. Modern IP-based communications are designed to support this increasingly digital way of working.

The Ireland PSTN and ISDN switchoff is therefore part of a broader move away from legacy telephone infrastructure towards modern communications services.

For Irish businesses, the key is to understand how this transition affects their individual locations, services and equipment rather than waiting until an existing legacy service needs to be replaced urgently.

Open Eir has outlined its Fibre Switch Over programme, covering the migration from its legacy copper network towards full fibre services.

Why is the Ireland PSTN and ISDN switch-off happening?

Traditional telephone networks were designed for a very different era of business communications.

An office once revolved around fixed desks, physical handsets and employees working from a single location. Today, an employee could answer a customer call in Dublin, join a video meeting from home or communicate with colleagues while travelling.

Modern phone systems are better suited to this environment.

Cloud-based communications can give employees access to voice, video, messaging and other features across multiple devices and locations.

Yellowcom’s iPECS ONE solution, for example, supports voice calls, video calls and instant messaging across PCs, tablets and smartphones. It can turn different devices into extensions of the business phone system, helping organisations support office, remote and mobile workers.

The Ireland PSTN and ISDN switch off therefore provides businesses with an opportunity to consider whether their existing communications are still appropriate for how their teams operate.

What could the PSTN and ISDN switch off affect?

One of the biggest mistakes a business can make is assuming the change only affects its office telephones.

Legacy telephone lines can be connected to numerous systems and devices.

Depending on your organisation, these could include:

• Office phone systems
• Alarm and security systems
• Lift and emergency phones
• Fax machines
• Payment terminals
• Door-entry systems
• Older broadband connections
• Telecare or monitoring equipment
• Other analogue devices

Before migrating or cancelling a traditional line, establish exactly what is connected to it.

This is particularly important for organisations with multiple premises. A company may have upgraded its main office while an older branch, warehouse, hotel, school, medical practice or property still depends on legacy technology.

As the Ireland PSTN and ISDN switch off progresses, creating a complete inventory of these services can help prevent unexpected disruption.

Ireland PSTN and ISDN switch off: what should businesses do?

Preparation does not need to be complicated. The important thing is to begin before you are under pressure to replace an existing service.

Here are six practical steps.

1. Audit your existing telephone lines

Start by identifying every telephone line across your organisation.

For businesses operating from multiple locations, complete this process for each site individually.

Record the telephone number, location, provider and purpose of each line wherever possible.

Do not assume a line is redundant simply because nobody recognises the number. It may still be supporting another piece of equipment.

2. Identify everything connected to those lines

Once you have identified your lines, determine what uses them.

Look beyond desk phones.

Check alarms, lifts, payment equipment, fax machines, entry systems and any other technology that may rely on an analogue connection.

If you are uncertain whether equipment is compatible with modern services, speak to the company responsible for maintaining it.

3. Review your existing phone system

The Ireland PSTN and ISDN switch off is also a good reason to ask whether your existing business phone system is still meeting your needs.

Consider questions such as:

Can employees easily work from different locations?

Can calls be handled on mobiles, computers and other devices?

Can new users be added easily?

Can you understand call volumes and missed calls?

Can your phone system integrate with other business applications?

Does it support the way your customers now communicate?

If your existing system struggles to meet these requirements, replacing a legacy service with another basic phone setup could be a missed opportunity.

Explore Yellowcom Business Phone Systems.

Could a cloud phone system replace your legacy setup?

For many organisations preparing for the Ireland PSTN and ISDN switch off, a cloud phone system is an option worth considering.

Rather than relying on a traditional on-site PBX and legacy telephone lines, cloud communications use IP technology to provide business calling and additional communication features.

The result can be a much more flexible communications environment.

Support flexible and hybrid working

Employees increasingly need to communicate outside the traditional office.

A cloud-based system can enable users to access business communications from different locations and devices.

For example, iPECS ONE enables employees to make, receive and manage calls from PCs, tablets and smartphones while also providing video and instant messaging functionality.

Scale more easily

Traditional phone systems can make growth complicated.

Opening another office or adding employees could mean purchasing additional hardware or arranging engineering work.

Cloud systems can make it easier to add users as your business changes.

Improve collaboration

Business communication is no longer limited to voice calls.

Employees communicate using video, instant messaging and other digital channels throughout the working day.

Bringing these capabilities together can make it easier for teams to communicate whether they are sitting in the same office or working miles apart.

Learn more about Yellowcom Cloud Phone Systems.

Look beyond simply replacing your telephone lines

Preparing for the Ireland PSTN and ISDN switch off should not simply be a case of asking, “What replaces this line?”

A better question is:

What does our business actually need from its communications today?

Modern platforms can provide functionality that goes far beyond the capabilities of traditional PSTN and ISDN services.

Call reporting is a good example.

iPECS Analytics provides businesses with real-time information about areas such as call queues, waiting times and agent availability. It can help organisations understand call activity, identify trends and allocate resources more effectively.

Modern systems can also connect communications with other cloud applications.

CONNECT for iPECS, for example, can integrate with CRM and productivity platforms. Yellowcom’s supporting product information highlights integrations with applications including Microsoft and Google services as well as CRM platforms, helping businesses bring communications and everyday software closer together.

Instead of seeing the transition as a forced technology change, businesses can use it as an opportunity to improve productivity and customer communication.

Consider your business connectivity too

A modern phone system and business connectivity increasingly go hand in hand.

IP and cloud communications depend on having suitable connectivity, so your review should include the broadband or connectivity available at each location.

Ask:

Is our current connection suitable for our business requirements?

How many people and devices rely on it?

How critical are internet-based applications to everyday operations?

What would happen if our primary connection became unavailable?

Do we need additional resilience?

These questions are particularly important for businesses where telephone and online access are essential to customer service or day-to-day operations.

Yellowcom provides connectivity services alongside business phone systems, allowing organisations to review the wider communications environment rather than treating individual services in isolation.

Explore Yellowcom Business Connectivity.

What about alarms, lifts and payment terminals?

This deserves particular attention during the Ireland PSTN and ISDN switch off.

Not every device connected to a traditional telephone line is a telephone.

Older alarm systems, lift emergency phones, payment terminals and other equipment may have been designed specifically around analogue or legacy connectivity.

Businesses should not assume that this equipment will automatically continue operating after the underlying telephone service changes.

Speak directly to the relevant equipment provider or maintenance company.

Ask them whether your existing equipment is compatible with modern IP-based services and whether an upgrade or alternative connectivity solution is required.

This simple check could prevent a critical service from being overlooked during migration.

Think about resilience and business continuity

Moving away from traditional telephone infrastructure also means businesses should review resilience.

Modern communications depend on powered networking equipment and connectivity. Your organisation should therefore consider what happens during an internet or power outage.

The right approach will depend on how critical communications are to your operation.

Businesses may want to consider backup connectivity, mobile communications, power resilience and appropriate disaster-recovery procedures.

The Ireland PSTN and ISDN switch off provides a useful reason to review these arrangements rather than simply recreating an old communications setup using newer technology.

Different sectors have different requirements

There is no single migration plan that will work for every Irish organisation.

A hotel may need to consider guest communications, reception services and lift phones.

A healthcare provider could have multiple sites, patient-facing numbers and specialist equipment.

A property management business may need to audit communications across numerous buildings.

A legal or professional services firm may place greater emphasis on flexible working, call handling and consistent client communication.

Transport and construction businesses may have employees who spend much of their working day away from a traditional office.

This is why the Ireland PSTN and ISDN switch off should be approached as a business communications project rather than simply a telephone-line replacement exercise.

Start preparing for the Ireland PSTN and ISDN switch off now

There is little benefit in waiting until a legacy service creates an urgent problem.

Starting early gives you time to understand your existing infrastructure, speak to specialist equipment providers, assess your connectivity and investigate modern alternatives.

Your preparation checklist should include:

1. Identify all existing PSTN and ISDN lines.
2. Record what each line is used for.
3. Check alarms, lifts, payment terminals and other connected devices.
4. Review your current business phone system.
5. Assess connectivity at every location.
6. Identify numbers that need to be retained.
7. Consider business continuity and resilience.
8. Explore cloud and IP-based communication options.
9. Create a phased migration plan where appropriate.
10. Work with an experienced communications provider.

Planning ahead means the transition can be controlled around your organisation rather than dictated by an urgent need to replace legacy technology.

Prepare your business with Yellowcom

The Ireland PSTN and ISDN switch off is an opportunity to take stock of how your business communicates.

Rather than simply replacing ageing telephone lines, you can review your entire communications setup and consider whether a cloud-based system could make your organisation more flexible, connected and productive.

Yellowcom provides business phone systems, cloud communications and connectivity solutions for organisations across Ireland.

Our approach is focused on understanding what your organisation actually needs before recommending the right solution.

Learn more about Yellowcom Ireland.

Ready to review your business communications?

If your organisation still relies on PSTN, ISDN or an older phone system, now is the time to understand your options.

Speak to Yellowcom about preparing for the Ireland PSTN and ISDN switch off.

Contact Yellowcom today to discuss your business phone system and migration options →

FAQs: Ireland PSTN and ISDN Switch Off

1. What is the Ireland PSTN and ISDN switch off?

The Ireland PSTN and ISDN switch off refers to the move away from traditional legacy telephone infrastructure towards modern IP and fibre-based communications. Businesses using older telephone services should review their existing lines and equipment and plan how they will transition.

2. When will PSTN and ISDN be switched off in Ireland?

Irish businesses should treat the change as a managed transition rather than assuming that the UK’s switch-off timetable applies directly to Ireland. ComReg provides information and guidance on the migration from legacy networks, while businesses should check their individual services and locations and plan ahead.

ComReg provides information and guidance on the migration from legacy networks

3. Are PSTN and ISDN the same thing?

No. PSTN stands for Public Switched Telephone Network and refers to the traditional telephone network. ISDN stands for Integrated Services Digital Network and provides digital voice and data services over traditional telecommunications infrastructure. Both are legacy technologies compared with modern IP-based communications.

4. Will my existing business phone number still work?

Moving away from a legacy telephone service does not automatically mean changing your established business number. Number-porting options may allow existing numbers to be retained, depending on the provider, service and technical circumstances. Confirm number requirements as part of your migration plan.

5. Will my alarm work after moving away from PSTN or ISDN?

It depends on the equipment. Some alarms and other specialist systems were designed to communicate over traditional telephone lines. Contact your alarm provider to establish whether the equipment needs to be upgraded or provided with an alternative connection.

6. What happens to lift phones?

Older lift emergency phones may rely on traditional telephone infrastructure. Businesses and property managers should contact their lift maintenance provider to confirm how each system communicates and whether changes are necessary.

7. Is VoIP a replacement for PSTN and ISDN?

VoIP — Voice over Internet Protocol — enables voice calls to be delivered over IP networks rather than traditional telephone infrastructure. For businesses, VoIP can form part of a broader cloud phone system providing calling alongside additional communication and collaboration functionality.

8. Do I need to replace my desk phones?

Not necessarily. This will depend on your current equipment and the solution you choose. Some existing handsets may be compatible with modern systems, while others may need replacing. Modern platforms can also allow employees to make and receive calls through computers, smartphones and tablets.

9. Why should my business prepare early?

Early preparation gives you time to identify legacy lines, check connected equipment, review connectivity, retain important numbers and choose a new solution without unnecessary pressure.

10. Can Yellowcom help with the Ireland PSTN and ISDN switch off?

Yes. Yellowcom provides business phone systems, cloud communications and connectivity solutions for businesses in Ireland. We can help you review your existing communications and discuss suitable options for moving away from legacy technology.

Speak to Yellowcom about your migration →