Phone Solutions

An “Internet Phone” (also called VoIP, IP telephony, or digital voice) is simply a phone service that uses your data connection (your internet) rather than old-style copper telephone lines. Instead of sending voice over dedicated analogue or ISDN circuits, your voice is broken into data packets and transmitted over your broadband or fibre link.

With an internet phone system, you can:
- Make and receive calls on standard desk handsets, softphones, or mobile apps.
- Use advanced features like voicemail-to-email, call forwarding, conferencing, auto attendants, call analytics, and more.
- Scale easily — add or remove lines as your business grows.
- Centralise multiple sites or remote workers on one unified system, as long as each location has an internet link.

In short: you get all the traditional “phone line” capabilities, but with more flexibility, lower long-term costs, and far greater feature richness.

What’s happening to ISDN and PSTN in the UK?
The UK is phasing out the legacy copper telephone network (PSTN) and Integrated Services Digital Network (ISDN). By 31 January 2027, all ISDN services (ISDN2, ISDN30) will be permanently withdrawn.

Although the PSTN/ISDN shutdown is the big move in 2027, the process is already underway: new analogue / ISDN services are no longer being sold in many areas, and providers are strongly encouraging migration to digital (IP-based) voice services well ahead of the deadline.

Because ISDN and PSTN are copper-based, old, and expensive to maintain, the industry is transitioning to a “voice over IP” future..

Why Your Business Must Upgrade

Service loss

After 2027, ISDN lines will simply stop working. Your calls, fax, alarm diallers, card machines or any device hooked to those lines will cease to function.

Internal Asset & IT Equipment Management

Inability to expand or change

Because legacy line sales are being restricted (“stop-sell”), you often can’t add more channels, upgrade lines, or make changes to your traditional setup.

Rising risk of faults or degradation

As the copper network ages, it becomes more fragile, with higher likelihood of faults and outages.

Loss of control and flexibility

Traditional systems often force you into rigid configurations. Upgrading lets you modernise, simplify management, and unlock new capabilities.

Missed features & savings

Internet phone systems are more cost-efficient (lower call charges, elimination of line rental costs) and come with advanced features that legacy systems can’t offer.

Put simply: staying on ISDN is not viable long term — migrating early gives you a better transition, reduces risk, and lets you reap the benefits ahead of your competitors.

Audit & Planning

- We’ll review your existing phones, lines, devices (alarm, card machines, fax, etc.) to see what currently uses ISDN or analogue.
- We assess your internet connection (bandwidth, resilience, quality) to ensure it can carry voice traffic reliably.
- We recommend whether to migrate via SIP trunking (keeping your existing PBX hardware) or move fully to a hosted VoIP / cloud PBX approach.

Number Porting & Configuration

- We help you port your existing business phone numbers, so you don’t lose the contact identity you’ve built.
- Set up routing, extensions, failover, call flows, hunt groups, auto attendants — tailored to your business..

Deployment & Testing

- We install handsets, apps, gateways, and test all endpoints.
- We run test calls, failover tests, ensure call quality and fallback mechanisms.
- Train your staff in using the new system (making calls, forwarding, voicemail, etc.)

Cutover & Support

- We handle the final switch from ISDN to IP, with minimal downtime.
- We monitor performance and provide ongoing support, fine-tuning as needed.

What is the difference between ISDN and Internet Phones (VoIP)?

ISDN uses old copper-based lines to carry voice signals, while VoIP (Internet Phones) uses your broadband or fibre connection to transmit calls digitally. VoIP is more flexible, cheaper to run, and future-proof, while ISDN will be switched off by 2027.

Will my current business phone numbers be lost if I move to VoIP?

No — in most cases your existing numbers can be ported across, so your customers can keep calling you exactly as before.

Do I need new handsets?

Not always. Some modern handsets can be adapted to work with VoIP. In other cases, we’ll supply you with affordable IP phones or apps that work on mobiles and computers.

What happens if my internet goes down?

With the right design, we can set up backup connections, call routing to mobiles, or failover systems. This ensures your business stays connected even if your main internet link fails.

Is VoIP call quality as good as ISDN?

Yes — in fact, with a solid internet connection, VoIP often delivers better quality than ISDN. HD voice technology provides crystal-clear conversations.

Can VoIP handle multiple offices or remote workers?

Absolutely. Internet phone systems are built for flexibility. Whether you have staff at home, travelling, or in different branches, everyone can be part of one unified phone system.

Is VoIP secure?

Yes. Calls are encrypted and we implement strong security measures to protect your business. In many ways, it’s more secure than traditional lines.

Why should I switch now if ISDN isn’t being turned off until 2027?

Early adoption means you can spread out the change, avoid last-minute disruption, and start saving money straight away. It also means you won’t risk being caught in a rush as the deadline approaches.

Ready to Future-Proof Your Business Phones?

The ISDN switch-off is coming — but you don’t need to wait until 2027 to act. By upgrading now, you’ll save money, gain flexibility, and ensure your business stays connected without disruption.

Talk to Titan Business Solutions today for a free, no-obligation consultation. We’ll assess your current setup, explain your options, and create a clear migration plan that works for your business.

What Is an Internet Phone?

The ISDN & PSTN Switch-Off: Why Internet Phones Are the Future