How to Choose a Phone System a plain-English 2026 guide.
Choosing a business phone system comes down to a handful of questions. This honest UK guide walks through each one — so you pick the right setup, not the one with the best sales pitch.
Six questions that decide it.
How many users?
Your user count drives cost and the right platform. Small teams suit small business systems; larger or multi-site needs enterprise.
On Microsoft 365?
If your team lives in Teams, Teams calling is often simplest. If not, a cloud PBX usually fits.
Desk phones or apps?
App-only keeps costs down and suits mobile teams; desk phones suit reception and offices. Most do a mix.
Contract & flexibility?
Check term length, auto-renewal and price rises. Telexico has no mid-contract increases — unlike many big providers.
Which features?
Call routing, IVR, recording, an AI receptionist? List your must-haves so you don't over- or under-buy.
Budget?
Modern VoIP starts from £5/user/month. See what a phone system costs.
The 2027 switch-off.
Whatever you choose, it must be internet-based (VoIP): the old analogue/ISDN network is being switched off by 2027. If you're still on old lines, see our switch-off guide and readiness check. Moving now avoids the rush.
Still unsure? Tell us how you work and we'll recommend honestly — including when a competitor suits you better. Get a no-pressure recommendation →
The services behind the comparison.
Everything we'd put in front of you instead — designed, installed and supported by a UK team.
Phone systems
Connectivity
AI & more
Compare it properly, with no hard sell.
Send us your current setup and bill. We'll review what you have, what you pay, and where we can simplify or improve it — and tell you honestly if you're better off where you are.
Frequently asked questions
How do I choose a business phone system?
Answer six questions: how many users, whether you use Microsoft 365, desk phones vs apps, contract flexibility, which features you need, and your budget. Those decide the right platform — we'll guide you honestly.
Should I get desk phones or just an app?
Either or both. App-only is cheaper and suits mobile/hybrid teams; desk phones suit reception and fixed desks. Many businesses mix the two.
Do I have to switch before 2027?
Yes — the old phone network is being retired by 2027, so any new system should be internet-based (VoIP). Moving now avoids the last-minute rush.
What does a business phone system cost?
Modern VoIP starts from around £5/user/month for the basic package, with full-feature plans from £12.99 all-in. No mid-contract rises with Telexico.