Migration checklist / PSTN switch-off
PSTN switch-off checklist for UK businesses.
The deadline is 31 January 2027. Audit the services that still depend on old analogue lines before you choose the replacement phone system.
Checklist
Check every dependency, not just the phones.
Important: a replacement VoIP phone system does not automatically solve every analogue dependency. Each service needs to be checked with the relevant equipment or maintenance provider.
Where Zero fits.
For the voice layer, Zero can design the replacement around Yeastar P-Series PBX systems, Yealink endpoints, SIP connectivity and remote/mobile users. If staff work inside Microsoft Teams, Yeastar can also bring PBX calling into Teams for the users who benefit from that workflow.
Talk through your plan
Want us to size the real system?
Send the result and a little context. We’ll map it to Yeastar P-Series, Yealink endpoints, SIP connectivity and any Teams integration you actually need.