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VoIP & phone systems

Calls over the internet, phone systems on your premises or in the cloud, and mobiles that double as office phones.

Compare VoIP & phone systems

Cloud-hosted systems

Whether your people are in the office or on the road, a cloud-based system gives you flexibility, scalability, and full features. All with no physical kit to install or maintain.

  • Full, flexible features
  • Simple set-up
  • No maintenance costs
  • Easy to manage

On-premises systems

If you’re not ready for a cloud-based system, choose one of our premises-based systems with round-the-clock support.

  • BT Quantum
  • Avaya IP Office
  • Mitel
  • Flexible finance

Phone lines & numbers

Phones, phone lines, and broadcast quality ISDN lines. Free, lo-call, and premium rate numbers.

Compare phone lines

Phone lines & numbers

Phone lines with support, feature, and rental options to suit all users. Customer contact options, from lowcost 08 to premium rate 09 numbers.

  • Unlimited calls £10/month
  • Lines with added features
  • Premium rate calls
  • Low-cost calls

ISDN lines

Broadcast-quality calls and fast, error-free data transfer for small and large businesses.

  • ISDN2e (up to 8 users)
  • ISDN30/30e (over 8 users)

Premium Calling features

Call answering, call diversion and caller identity products to manage your calls effectively.

  • Call Minder services
  • Smart Divert & Call Redirect
  • Calling Line Indentity & Presentation Numbers

BT Payphones & calling cards

Rent a payphone, get a BT Chargecard, or buy an old phone box.

  • Buy your own traditional red kiosk
  • Advertise your business or campaign on a kiosk

Business phones

All the kit you need to keep your business talking.

  • Corded office phones
  • System phones
  • Cordless DECT
  • Answer machines


Mobile phones and SIM-only. Minutes, text, and data bundles. Mobile broadband. Office calls on your mobile.

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Mobile phones

Choose from a huge range of smartphones, tablets, and tariffs.

  • Apple
  • HTC
  • Samsung
  • BlackBerry
  • Microsoft
  • Huawei

SIM only

Use your own mobile. Buy inclusive minutes, text, and data plans.

  • 1GB, 2GB, 5GB plans
  • Inclusive minutes & texts
  • 4G at no extra cost
  • Unlimited BT Wi-fi

Mobile business solutions

Take your broadband on the road with you; mobile software, hardware, and service for field-based workforce; use your mobile for office calls.

  • Mobile broadband
  • BT One Phone
  • Mobile workforce solutions
  • Rugged device options

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