4.9 / 5 on Google
312+ verified reviews
10,000+ numbers available
Active in minutes
250,000+ numbers connected since 1998
No contracts · cancel anytime
Tier-1 BT / C&W network
Voicemail to email included

Cloud phone systems

Smart Numbers VoIP

Tier-1 carrier-grade cloud telephony for offices, retail, business centres, industrial units, homes and off-grid sites. Works with your existing broadband, or on our own dedicated networks. Flexible, scalable and built around how your business actually runs.

Tier-1 UK network Any broadband provider Monthly or contracted

Why customers choose us

Carrier-grade VoIP, picked up by humans

We only use trusted, award-winning networks. The call solutions are feature-rich. Top customer service at the lowest prices, on great value channels, lines and call plans without compromise.

Tier-1 carrier-grade

Calls travel on the same BT / C&W tier-1 backbone the UK's biggest operators use.

Feature-rich as standard

Recording, IVR, hunt groups, voicemail-to-email, time-of-day routing, the lot.

Scales with the business

Add channels and users from the control panel. No upgrades, no rip-and-replace.

Low cost, low risk

No ISDN line rentals, no PBX, monthly or fixed-term agreements.

UK-based support

Average pickup under 30 seconds. Real engineers who know the product.

Works with any broadband

Plug into your existing line, or layer our broadband and SIP trunks on top.

Every aspect, reviewed

Turnkey VoIP, end to end

IP, SIP, hosted cloud and on-premise solutions. Infrastructure, cabling, installation and training, all from one team. Ongoing support and maintenance available, not compulsory.

Talk to a VoIP specialist
  • IP, SIP, hosted cloud and on-premise
  • Compatible with any broadband provider
  • Free calls and transfers between sites
  • Call management, hunt groups, voicemail
  • Call recording included
  • Add features from the control panel
  • Move or install existing numbers
  • Monthly or contracted agreements

Ready when you are

Get the right VoIP setup for your business

Talk to a UK specialist for a free, no-obligation quote. We'll tune the package to your existing infrastructure and call volumes.

Quick and easy

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Pick a plan, pick a number, check out

No contract4.9 on Google