The UK PSTN network switches off by 2027

The 2027 switch-off, handled for you.

The traditional phone network is retiring. Moving early means clearer calls, a lower bill and zero last-minute scramble — and you keep every number your customers know. Here’s exactly how it works.

The clock is ticking

ISDN & PSTN switch off on 31 January 2027.

The earlier you move, the smoother the migration — and the sooner your monthly bill comes down.

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Why switch with Skye Kloud

Four reasons to move now, not later.

Superior quality

VoIP and SIP deliver noticeably clearer calls than the ageing ISDN network they replace.

Free upgrade

We handle the hardware and the changeover — a stress-free move with no disruption to your day.

Contract buy-out

Tied into another provider? We’ll look at buying out your existing contract to get you moving.

Tailor-made

Your new system is built around your business — not forced into an off-the-shelf box.

  • Step 1. Free review of your current lines and contract
  • Step 2. We design a digital system around your business
  • Step 3. We port your numbers — you keep them all
  • Step 4. Planned install with no downtime
  • Step 5. Lower monthly bills and a named contact for life
A calm, planned changeover

No drama. No downtime. No lost numbers.

Having the new technology with Skye Kloud will actually decrease your monthly expenditure — and because we plan the whole migration around you, your phones keep ringing throughout. One dedicated customer experience team owns the move from first call to fully live.

Run the numbers

See where you stand — and what you could save.

Thirty seconds tells you how exposed your current setup is to the switch-off, and a realistic range for what moving to digital could take off your annual bill. The exact figure is always a free, bespoke quote.

30-second check

What could you save by switching?

Phone users / extensions: 10
Worth a review

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Estimated annual saving

Get my exact quote

Estimate only — every Skye Kloud package is bespoke and has no fixed price. Your exact saving comes from a free, no-obligation consultation.

Common questions

Everything businesses ask about 2027.

Will moving to digital cost me more?

No — for most businesses it costs less. Modern VoIP and SIP usually decrease your monthly expenditure compared with old ISDN line rental, and your first year of broadband is free.

Can I keep my existing phone numbers?

Yes. You keep your existing numbers — we understand they’re vital to your business, so number retention is built into every migration.

What actually switches off in 2027?

The UK’s traditional PSTN and ISDN telephone network is being retired. After the switch-off, business phone lines run over a digital (IP) connection instead of copper lines.

Do I have to wait until 2027?

No — and you shouldn’t. Moving early avoids the last-minute rush, locks in lower running costs sooner, and gives you time for a calm, planned changeover.

Will there be downtime during the switch?

We plan the migration around your business and port your numbers cleanly, so day-to-day calls keep running. Your dedicated customer experience team owns the whole process.

Beat the 2027 rush.

Book a free consultation and we’ll map your move off ISDN — keeping your numbers and cutting your bill.

Get a free consultation 0333 041 1113
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