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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