Written by

Tim Patrick, Global Head of Solutions The Netherlands

31 January 2027. Mark it in red. That's the date Openreach finally closes the UK's Public Switched Telephone Network (PSTN) for good, the analogue copper backbone that has carried the nation's calls, alarms, payment terminals, and telemetry for over a century.

If your business, or your customers' sites, still depend on copper lines for anything, voice, broadband, lift phones, EPOS terminals, door entry, telecare, this is the moment to have a migration plan. And for a growing number of use cases, that plan doesn't have to mean waiting on a fiber install date. It can mean going straight to satellite.

What's actually happening in 2027

The UK's telecoms providers are unanimous on the headline facts:

PSTN and ISDN services are being retired nationwide by BT/Openreach, with the cut-off date set for 31 January 2027.
Every phone line will move to an All-IP, internet-based network. Voice becomes VoIP; broadband shifts to Full Fiber (FTTP) or single order broadband (SOGEA).
This isn't just a phone problem. Openreach and the major carriers have flagged that PSTN, ISDN, and ADSL underpin far more than calls, think lift emergency phones, alarm systems, point-of-sale machines, telecare pendants, and remote telemetry. Anything plugged into a phone socket is in scope.
Wireless Logic estimates BT alone has identified around 200 distinct PSTN-dependent use cases, from payment terminals to industrial telemetry, that will all need a new way to connect.

The scale of the challenge is why providers are urging businesses to start auditing their estate last year, and if not then, now, certainly do not wait until late 2026 to find out you have an imminent cliff edge. Every site with PSTN-dependent equipment needs to be identified, assessed, and migrated, and fiber rollout, while progressing, won't reach every location.

The gap fiber can't fill

Full Fiber is the default answer for most premises, and rightly so. But it has two well-known limits:

1. Geography. Openreach is targeting the majority of the UK for Full Fiber coverage by late 2026, with the remaining rural minority not covered until years later. If your branch, farm, construction site, or plant room sits in that gap, you can't simply "switch to fiber" on schedule.

2. Non-standard sites. Lift shafts, standalone alarm cabinets, temporary sites, remote pumping stations, and mobile assets were often connected to PSTN precisely because running new cabling was impractical. Digging a fiber trench to a rural water outstation or a construction site that will be gone in six months rarely makes economic sense.

This is exactly the gap where satellite or cellular connectivity, specifically a managed service, stops being a novelty and starts being the pragmatic answer.

Where Blue Wireless's Global Managed LEO (GML) fits in

Blue Wireless, part of the Wireless Logic Group, is a Global Authorized Reseller of Starlink, and its Global Managed LEO (GML) & Global Wireless Access (GWA) services were built for exactly this kind of connectivity gap. Rather than selling a dish or a SIM and leaving you to figure out the rest, GML & GWA are fully managed packages:

Site survey, installation, and enterprise-grade routers bundled in, so there's no DIY guesswork about whether Starlink will actually perform at a given location.
24/7 support and on-site replacement, so a hardware fault doesn't turn into days of downtime for a lift phone or alarm line.
Coverage now spanning 60+ countries, deployable in a guaranteed installation window, under a single contract and invoice, a real advantage for any organization managing dozens or hundreds of PSTN-dependent sites at once.
Cellular + LEO failover, so a site can fall back from LTE/5G to Starlink (or vice versa) automatically if one network has an issue, a natural fit for anything currently relying on the "always-on" assumption that came with copper.

Mapping GML to the PSTN use cases that actually need it

The bigger opportunity: don't just replace, upgrade

The PSTN switch-off is being framed as a forced migration, but providers on all sides, BT, Vodafone, and Wireless Logic alike, make the same point: this is also a chance to add capability that copper never offered. A GML-connected alarm panel or telemetry unit doesn't just "still work" after 2027, higher bandwidths available via GML/GWA services mean additional use cases can be accommodated, think additional remote monitoring, predictive maintenance, camera feed’s and richer data than a PSTN line ever could.

Getting ready before January 2027

With roughly 5 months left on the clock, the practical next steps are the same regardless of which connectivity partner you choose:

Inventory every PSTN, ISDN, and ADSL-dependent line or device across your estate, don't assume it's just phones.
Flag anything in a fiber-poor or hard-to-reach location: these are your priority candidates for a managed satellite or hybrid solution.
Assess resilience requirements: for business-critical or safety-critical lines (lifts, alarms, telecare), a redundant service may be non-negotiable.
Get a single point of accountability for multi-site migrations, one contract, one SLA, one support line beats a fragmented rollout, especially when time is of the essence.

The PSTN switch-off deadline isn't moving, and for most of the UK, fiber will get there in time. But "most" isn't "all," and it's the exceptions — the rural monitoring station, the remote retail branch, the out of town distribution charging station, — that tend to get discovered late, usually when someone finally checks what's still plugged into a phone socket. Whatever route a business takes, the earlier that inventory happens, the more options are still on the table when January 2027 arrives.