Microsoft 365 Business Voice

Get a phone system designed for Office 365.

Built for small and medium businesses.

A desktop screen, mobile phone, and desk phone all displaying Microsoft Teams

Microsoft 365 Business Voice is a modern cloud-based telephony solution that integrates into Office 365. It gives you calling together with chat and meetings in a single app, Microsoft Teams.

What’s included

Enterprise-grade phone system

Reliable and secure calling delivered from Microsoft’s trusted cloud.

Built-in audio conferencing

Add flexibility to your meetings with a dial-in number, integrated into every online meeting.

Calling plan

Get new phone numbers or migrate existing ones. Make and receive PSTN calls to any number.

A smartphone screen displaying a Teams communication feed that includes chats and calls and a tablet screen displaying contacts and a dial pad.

Calling, chat, and meetings in a single app

Simplify your communications by unifying calling with chat and meetings in Microsoft Teams. Your contacts and calendar are connected across Teams and Outlook. And take collaboration to the next level by using Word, Excel, and PowerPoint within calls and meetings.

Call from anywhere, on any device

Stay connected with a single phone number across your computer, mobile device, and desk phone. Get a consistent experience across devices with the Microsoft Teams app and Teams devices. Make calls and join meetings with one-click.

A tablet screen displaying a Teams chat and a voice call and a smartphone screen displaying a call log.
Lifestyle image of person with headset

Delivered from Microsoft’s trusted cloud

Keep your business secure and running smoothly with an enterprise-grade phone system. Microsoft’s cloud provides built-in redundancy and load balancing with a 99.9% uptime guarantee. Plus you get cloud-powered AI with voicemail transcription, inline chat translation, and real-time captioning in meetings.

Simplified setup, billing, and management

Save time and money with a single provider for all your communications. Easily manage your phone system from the familiar Office 365 admin console, adding phone numbers in minutes. Enjoy a cloud-based phone system without the hassle and costs of maintaining a PBX.

A tablet screen displaying the Microsoft 365 Business Voice admin center screen

See what people are saying

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Gartner named Microsoft a leader in the Unified Communications as a Service (UCaaS) and Meetings Magic Quadrants in 2019.

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Boston Limited Co.

“The flexibility that Microsoft 365 Business Voice brings to remote working has been a game changer. From collaboration to the connectivity offered across multiple devices, every little detail makes the whole experience so much better.”

– Andy Doyle, Head of IT Services, Boston Limited

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Read the Forrester Total Economic Impact™ (TEI) study to understand how Microsoft 365 Business Voice can help improve employee communication and business performance.

See how much you can save by making the switch

Use the Business Voice Value Calculator to estimate how much Microsoft 365 Business Voice can help you reduce costs against your current communications solutions.

Teams devices

Get certified Teams devices for high-quality audio and video calling.

Frequently asked questions


Microsoft 365 Business Voice is a cloud-based phone system built for small and medium sized businesses. It enables users to make, receive, and transfer calls to and from landlines and mobile phones on the public switched telephone network (PSTN) in Microsoft Teams.

It’s designed for small and medium businesses using Office 365 or Microsoft 365 that are seeking a modern phone system. Business Voice can be added onto Office 365 or Microsoft 365 subscriptions that include Microsoft Teams; qualifying plans include Office 365 Business Essentials, Business Premium, E1, E3, A3, or A3; Microsoft 365 Business, E3, or A3. You can purchase up to 300 seats of Business Voice. If your company has more than 300 users, you can learn more about our Enterprise Voice solution here.

Business Voice includes a phone system, domestic calling plan, and audio conferencing. Learn more here


A prepaid wallet (known as communications credits) is available for adding toll-free, additional minutes, & other pay-per-minute charges.   


An optional international calling plan that includes 600 minutes/user/month can be purchased as an add-on to Business Voice. 

Businesses operating in the UK and Canada can purchase Business Voice. Over time, Business Voice will be rolled out to additional countries.

You can learn how to plan, set up, and use Business Voice here.

Yes, you can transfer your phone numbers from your current service provider to Business Voice. After you port your phone numbers over, Microsoft will become your service provider.

Yes, customers can work with their Microsoft partner to bring their own calling plan. A configuration called allows customers to connect voice trunks directly from their network to Microsoft Teams or interconnect 3rd party telephony entities such as call centers or analog devices. The Microsoft 365 Business Voice (without calling plan) subscription is specifically designed for this situation. Contact your partner and ask them if they are offering it. If you do not have a Microsoft partner, you can find one here.

Microsoft 365 Business Voice is experienced through the Microsoft Teams applications. Devices certified for Teams, provides a seamless Teams experience on desk phones, conference phones, and meeting room systems: learn more here. For available devices check out the Microsoft Teams Devices Marketplace. Business Voice works with devices which certified for Skype for Business with features in this list. In 2023, these devices will no longer work with Business Voice.

Got a suggestion? We’d love to hear from you. Here are three ways to share your feedback.

  • Microsoft Teams desktop app - Click Help on the bottom left. Then click Report a problem or Suggest a feature.

  • UserVoice – submit and vote on other’s ideas.

  • Microsoft Tech Community – ask questions and discuss.

1. Included minutes are pooled at the tenant level. Additional minutes will be charged per minute using Communications Credits
2. Can add-on to a qualifying Office 365 or Microsoft 365 subscription for a maximum of 300 seats. Qualifying plans include: Office 365 Business Essentials, Business Premium, E1, E3, A1, or A3; Microsoft 365 Business, E3, or A3

3. Discounted pricing valid for first 12 months of subscription for purchases made by April 30, 2020.Company billing address must be in Canada in order to be eligible for this offer.