Business VoIP guide · 2026-04-28

VoIP for Hotels in the UK: Replacing the Legacy PBX

How UK hotels and hotel groups replace an ageing on-premise PBX with cloud VoIP: guest room extensions, PMS integration, and multi-property management.

Quick answer: UK hotels replacing an ageing on-premise PBX with cloud VoIP typically need guest-room extension support, integration with their property management system (PMS) for wake-up calls and billing, and centralised management across multiple properties, all of which cloud VoIP handles without the maintenance contract an old PBX requires.

Many UK hotels are still running phone systems on PBX hardware that's a decade or more old: expensive to maintain, difficult to expand, and increasingly hard to get parts for. Cloud VoIP replaces that hardware entirely, with no on-site box to service.

The problem with an ageing on-premise PBX

Legacy hotel PBX systems typically run on proprietary hardware with expensive annual maintenance contracts, engineer call-out fees for any change, and limited or no remote management. When a board fails, rooms lose phone service until an engineer arrives.

What cloud VoIP replaces it with

  • Guest room extensions managed centrally, with instant reassignment as guests check in and out. No rewiring required.
  • PMS integration for automated wake-up calls, minibar/room service billing to the guest folio, and do-not-disturb status syncing.
  • Reception and back-office extensions alongside guest lines on the same system, with call routing rules for different departments.
  • Multi-property management, for hotel groups, all sites are visible and manageable from one dashboard rather than separate PBX units per building.

Migration without disrupting operations

A hotel can't have its phone system down for even an hour during a changeover. We run guest-room and back-office migrations in phases, with the new system tested and live in parallel before the old PBX is decommissioned.

Independent B&B or guest house instead?

If you're running a smaller independent property without a full PBX or PMS integration need, our guide to VoIP for B&Bs and guest houses covers the simpler setup.

Related: Compare VoIPninjas plans · VoIP phone systems · Business phone systems UK · PSTN switch-off 2027 · Talk to us

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