Your ISDN and PSTN lines are being switched off in January 2027. But even before the deadline, VoIP phone systems outperform traditional lines on almost every metric. Here's the full breakdown.
Get a Free Quote →VoIP wins on every dimension for businesses in 2025 — cost, features, flexibility and future-proofing. Traditional phone lines are being discontinued by BT in January 2027 regardless, so the question isn't really whether to switch, but when. Telexico migrates businesses free of charge — call us to plan yours.
Answered honestly
BT will switch off the PSTN and ISDN networks in January 2027. Any business still using traditional phone lines at that point will lose phone service. VoIP migration is mandatory — the only question is whether you do it now and benefit from savings, or wait until the deadline.
No — VoIP using HD codecs delivers noticeably better call quality than traditional PSTN. The key is having a good broadband connection (10Mbps+ is sufficient for most businesses).
Yes. Telexico ports your existing geographic and non-geographic numbers. The process takes 5–10 working days and calls are never lost during the transition.
Most businesses save 40–60% on their monthly phone bills when switching from ISDN to VoIP. The saving comes from lower per-user costs, cheaper or free calls, and no line rental charges.