Key Takeaways
- VoIP costs up to 60% less than traditional landlines for most businesses
- The UK PSTN network is being switched off by 2027 — landlines are going away
- VoIP offers advanced features like mobile apps, call recording, and CRM integration
- Northern Ireland businesses should migrate to VoIP now to avoid the last-minute rush
The Landline Era is Ending
For decades, traditional landlines were the backbone of business communications across Northern Ireland. But in 2026, the question isn't whether VoIP is better than landlines — it's how quickly you can make the switch.
With BT Openreach switching off the PSTN network by 2027, every business in the UK will need to move to digital phone systems. But even without the deadline, VoIP wins on virtually every metric that matters to a business.
Cost Comparison: VoIP vs Landlines
This is where VoIP pulls away decisively. Traditional landlines come with line rental, call charges, maintenance fees, and hardware costs that add up fast.
- Line rental: Landlines charge £15-25 per line per month. VoIP users typically pay £8-15 per user with calls included
- Call charges: Landlines charge per minute for most calls. VoIP plans usually include unlimited UK calls
- Hardware: Traditional PBX systems cost thousands upfront. Hosted VoIP requires only IP handsets or softphones
- Maintenance: On-premise phone systems need ongoing maintenance. Cloud VoIP is maintained by your provider
For a typical 10-user office in Belfast, switching from landlines to VoIP can save £3,000-5,000 per year.
Features: No Contest
Traditional landlines offer basic calling. VoIP offers a complete communications platform:
- Mobile apps — use your business number from anywhere on your smartphone
- Call recording — essential for compliance, training, and dispute resolution
- Auto-attendant — professional call routing without a receptionist
- Voicemail-to-email — receive voicemails as audio files in your inbox
- CRM integration — click-to-dial and screen pops with Salesforce, HubSpot, and more
- Microsoft Teams integration — make and receive calls directly in Teams
- Real-time analytics — track call centre metrics and performance
- Conference calling — built-in multi-party calling and video
Reliability: Addressing the Myths
The most common concern about VoIP is "what happens when the internet goes down?" It's a fair question, but modern VoIP systems have robust failover built in:
- Automatic mobile failover — calls redirect to mobile phones if the internet drops
- 4G/5G backup routers — secondary internet connection kicks in automatically
- Cloud-based resilience — the phone system runs in the cloud, not on your premises
- Geographic redundancy — data centres in multiple locations ensure uptime
In practice, a properly configured VoIP system with backup connectivity is more reliable than a traditional landline, which has a single point of failure at the exchange.
Flexibility and Scalability
Growing your business? With landlines, adding a new line means an engineer visit, new wiring, and a wait of days or weeks. With VoIP:
- Add a new user in minutes through an online portal
- Remove users just as easily — no contracts per line
- Support remote and hybrid workers with the same system
- Open a new office location and connect it to the same phone system instantly
- Scale from 2 users to 200 without changing platforms
Call Quality in 2026
Early VoIP had a reputation for choppy audio. That's ancient history. Modern VoIP uses HD voice codecs that deliver crystal-clear audio — often better than traditional phone lines. With a decent broadband connection (which most Northern Ireland businesses now have), call quality is superb.
Quality of Service (QoS) settings on your router prioritise voice traffic, ensuring calls stay clear even when the office is streaming, downloading, and browsing simultaneously.
Security Considerations
Both systems have security considerations, but VoIP has matured significantly:
- Encryption — modern VoIP uses TLS and SRTP encryption for calls
- Fraud protection — call barring, spend alerts, and anomaly detection
- Compliance — call recording for GDPR, FCA, and industry regulations
- ISO 27001 — choose a provider (like Drakos Systems) with security certifications
The Verdict: VoIP Wins on Every Front
In 2026, there's no scenario where a traditional landline is the better choice for a business. VoIP is cheaper, more feature-rich, more flexible, and — with proper setup — more reliable. And with the PSTN switch off looming, it's not just the better choice, it's the only choice.
Ready to Switch from Landlines to VoIP?
Get a free consultation and see how much your Northern Ireland business could save.
About the Author: Drakos Systems has been providing business communications solutions to Northern Ireland companies for over 20 years. We're ISO 27001 certified and specialize in VoIP migrations for businesses of all sizes.