If your small business still relies on a traditional landline, January 2027 probably feels a long way off – but it isn’t. And for many businesses running EPOS systems, it’s closer than it looks on the calendar.
The UK’s switch-off of the old copper phone network (often referred to as PSTN and ISDN) means those familiar landlines are being phased out completely.
Everything is moving over to digital, internet-based services instead. That includes the systems many shops, cafés, salons and takeaways depend on every day just to take payments.
And this is where things can get a bit uncomfortable for EPOS setups.
Why Does It Matter?
A lot of older EPOS systems still rely on landlines in one way or another. Some use them for card payment authorisation. Others use them for dial-up connections or failover support when broadband drops. Even systems that feel “modern enough” on the surface can have hidden dependencies on copper-line infrastructure.
When the switch-off happens, those connections simply won’t work anymore. No warning beep, no slow fade-out. Just silence. Payments may fail, tills may not sync, and in some cases your whole checkout process could grind to a halt at the worst possible moment, like a Saturday lunch rush or a busy retail weekend.
That’s the bit a lot of small business owners don’t realise yet: it’s not just about phones. It’s about anything that quietly depends on that old network in the background.
So What Can You Actually Do About It?
First, check your EPOS setup properly. Not just the terminal itself, but how it connects. If you’re unsure, your provider should be able to tell you quickly whether you’re still relying on a landline in any way. Don’t assume you’re safe just because “it’s always worked”.
Next, start thinking about switching to a fully IP-based system. That usually means broadband connectivity, often with a mobile backup (SIM-based failover is becoming really common now). The idea is simple: if your internet drops, your business doesn’t.
It’s also worth testing your current internet setup under pressure. EPOS systems are sensitive to stability, not just speed. A connection that “mostly works” for browsing might still struggle with payment processing at peak times.
And here’s the part that tends to get pushed down the to-do list: don’t leave it until the deadline year. 2026 is already the danger zone. Hardware upgrades, provider switches, installation bookings, they all take time, and they all tend to slow down when everyone else suddenly wakes up to the same problem.
If you run a small business, the safest approach is to treat this like something you deal with this year, not next. Because once 2027 arrives, there won’t be a grace period where old systems magically keep going.
This is big, because for EPOS systems, it’s a direct change to how you take money from customers. And that’s not something you want to be discovering on a busy day with a queue at the till.
Getting ahead of it now is about making sure your business keeps running exactly the way it should, without any nasty surprises when the old network finally disappears.
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Don’t get left behind.
