Small business owner working remotely with BT VOIP services

Cloud calls from anywhere with BT VoIP

Bring your team together and your customers closer with a VoIP phone system that’s easy to set up and even easier to use, from the UK’s favourite business network.

Small business owner working remotely with BT VOIP services

Bring your team together and your customers closer with a VoIP phone system that’s easy to set up and even easier to use, from the UK’s favourite business network.

Get in touch

0-5 Employees0800 707 632009:00 – 17:00 / Monday – Friday
6-99 Employees0800 414 860209:00 – 17:00 / Monday – Friday
100-249 Employees0800 011 382509:00 – 17:00 / Monday – Friday
Important price changes
Just so that you know ....

We're changing some of our prices from 1st April 2023. Find out what's changing by visiting bt.com/pricechange2023.

With cloud power comes great collaboration 

With cloud power comes great collaboration 

  • Work the way you want

    Our VoIP systems upgrade your small business comms and empower your hybrid teams to make and receive calls on any device, wherever they are.
  • Cut costs without compromise

    Replace expensive legacy hardware with a flexible cloud phone system for feature-rich HD calls that look and sound amazing.
  • Increase customer satisfaction

    Reduce wait times, offer a more personal experience and never miss another call, with VoIP phones.
  • Work the way you want

    Our VoIP systems upgrade your small business comms and empower your hybrid teams to make and receive calls on any device, wherever they are.
  • Cut costs without compromise

    Replace expensive legacy hardware with a flexible cloud phone system for feature-rich HD calls that look and sound amazing.
  • Increase customer satisfaction

    Reduce wait times, offer a more personal experience and never miss another call, with VoIP phones.

Our VoIP systems

VoIP telephone systems are perfect for growing businesses and hybrid teams. Take a look at our industry-leading solutions and find the best fit for your business.

Simple to set up, easy to use

Make communication easier with VoIP business phone systems that don’t rely on complicated legacy systems. And if you have any problems? We’ve got you covered with 24/7 UK-based support.

Reliable, secure communication

We use multiple, highly secure data centres for our cloud-based systems – so in the unlikely event there’s a problem at one data centre, your calls seamlessly switch to a backup.

Ready for the IP switchover in 2025

Every UK business must switch to IP technology by 2025. Get ahead of the competition with VoIP phone systems that will boost your business both now and in the future.

Why BT

24/7 support

Our dedicated 24/7 UK-based helpdesk is on hand to help fix any problems, whenever you need it.

Reliable network

Named by Gartner as the UK’s leading network service provider, and certified by CESG, ours is a network you can trust.

Industry leader

We’re the UK’s leading provider of cloud-based phone systems for small and medium businesses.

World-leading security

Our 3,000 security experts protect our networks from more than 6,500 cyber-attacks each day.

24/7 support

Our dedicated 24/7 UK-based helpdesk is on hand to help fix any problems, whenever you need it.

Reliable network

Named by Gartner as the UK’s leading network service provider, and certified by CESG, ours is a network you can trust.

Industry leader

We’re the UK’s leading provider of cloud-based phone systems for small and medium businesses.

World-leading security

Our 3,000 security experts protect our networks from more than 6,500 cyber-attacks each day.

Compare our VoIP systems

Find the right cloud based phone system for your business.
Number of users
Ideal for
Call package option
Video conferencing
Virtual geographic numbers
BT Cloud Voice
A flexible cloud-based phone system to support hybrid teams and remote businesses.
Number of users
5 to 99
Ideal for
Remote workingSimple set-up office
Call package option
PAYG, unlimited or shared minutes allowance
Video conferencing
Yes
Virtual geographic numbers
Yes
BT Cloud Voice
A flexible cloud-based phone system to support hybrid teams and remote businesses.
Number of users
5 to 99
Ideal for
Remote workingSimple set-up office
Call package option
PAYG, unlimited or shared minutes allowance
Video conferencing
Yes
Virtual geographic numbers
Yes
BT Cloud Work
Unify your communications with voice, video and messaging on one easy-to-use platform.
Number of users
10 and more
Ideal for
Growing businessesIntegrate numerous apps and servicesMix of mobile and fixed workforce
Call package option
Inclusive 500 minutes or unlimited
Video conferencing
Yes
Virtual geographic numbers
Yes
BT Cloud Work
Unify your communications with voice, video and messaging on one easy-to-use platform.
Number of users
10 and more
Ideal for
Growing businessesIntegrate numerous apps and servicesMix of mobile and fixed workforce
Call package option
Inclusive 500 minutes or unlimited
Video conferencing
Yes
Virtual geographic numbers
Yes
BT One Phone
Switch seamlessly between your mobile and landline network and answer calls anywhere.
Number of users
5 to 500 plus
Ideal for
Managing all calls and voicemail on one mobile device
Call package option
Choice of unlimited voice and texts, and flexible costs
Video conferencing
No
Virtual geographic numbers
Yes
BT One Phone
Switch seamlessly between your mobile and landline network and answer calls anywhere.
Number of users
5 to 500 plus
Ideal for
Managing all calls and voicemail on one mobile device
Call package option
Choice of unlimited voice and texts, and flexible costs
Video conferencing
No
Virtual geographic numbers
Yes

What is a VoIP system?

VoIP stands for ‘Voice over Internet Protocol’. Traditional phones rely on the Public Switched Telephone Network (PSTN) which routes calls across copper cables that are connected by telephone exchanges. VoIP technology, on the other hand, converts your voice into a digital signal so you can make calls over the internet. A VoIP phone system, then, allows you to make and receive calls through the IP telephony network without any limits. Watch the video to find out more about how VoIP works.

VoIP vs landline for business?

VoIP gives your business more flexibility as you make calls over the internet. That means your hybrid teams can stay productive, wherever they’re working.  

 

Our cloud-based systems do everything your traditional phone system can, and then some. Use call forwarding, automatic call routing, call transfers and three-way calling. 

 

With traditional landlines, you need to buy and maintain expensive equipment – which isn’t needed with a VoIP phone system, so you can control your budget. It also ensures you’re properly set up for the future, as all businesses need to switch to digital phone lines in 2025.

Is VoIP good for small business?

VoIP is the perfect solution for small businesses. It’s flexible and scalable, so you can easily add users, new sites VoIP phones as your business grows. It’s also a lower-cost solution than traditional phone systems – ideal if you need to keep a close eye on your costs. 

How reliable and secure are your cloud-based systems?

When combined with BT internet access, you’ll get 99.99% reliability. And if you’re making calls over a dedicated BTnet internet connection, we’ll give you your money back if it isn’t available 100% of the time.

 

The data centres we use for our digital voice services are regularly audited. They have the latest firewalls and intrusion detection systems, and all of the data we handle is encrypted.

How does a cloud-based phone system work with my mobile?

There are several ways you can use your mobile phone with the system. You can set your mobile to ring whenever your office phone does, which is handy if you’re away from your desk or office.

 

With BT Cloud Voice and BT Cloud Phone you can flip calls between phones. So, if you answer a call on the office phone as you’re heading out, you can switch the call seamlessly to your mobile.

 

Or with our mobile app (for Android and iOS devices), turn your mobile into an extension of your phone system, allowing you to set up call routing, transfer calls and much more.

How easy is it to set up a cloud-based phone system?

We make setting up as easy as possible, with simple plug and play options as well as ones we’ll come and install. And, we have a team of cloud system experts to call on if you need help along the way.

How much does VoIP cost in the UK?

How much you’ll pay depends on several factors.

 

It depends on which system is best for your business and how it’s configured. The best thing to do is give us a call so one of our team can chat about how your business works and what you need.

How reliable is VoIP?

VoIP phone systems are a reliable way to make and take calls – especially when backed by a solid internet connection such as a leased line. Plus, you have the support of our UK-based helpdesk 24 hours a day, if anything does go wrong.

How easy is it to set up a cloud-based VoIP system (and what support do I get)?

We aim to make set up as simple as possible, which is why you’ll have a team of cloud system experts to call on if you need help.

 

Our BT Cloud Phone system is the simple plug and play option where phones arrive ready to go. Just connect things together and we’ll talk you through how to set it up so it’s right for your business, including help with setting up call handling rules and user profiles.

 

BT Cloud Voice is also a system that you can install yourself, but you've also got the option for us to pop in and set it up if you prefer.

Are VoIP calls secure?

VoIP puts the security of your colleagues and customers first. VoIP technology includes several features to keep your people, systems and data safe, including Secure Voice and SIP over TCP. That means your business can run smoothly without worrying about the security of your calls – we’ve got you covered.

Discover more of our services