Business calling

Get the complete business calling solution, on-premises or in the cloud

Use an integrated phone solution with state-of-the-art features, whether you call from a phone, PC, or mobile device.

Introducing a free version of Microsoft Teams

A powerful hub for teamwork that brings together chat, video calling, files, and apps into a shared work space.

Unify your communication systems

Microsoft gives you all the business voice features you need, integrated with Teams or Skype for Business. Eliminate the costs and complexity of on-premises systems, with enhanced calling inside familiar tools.
A man making a video call from his smartphone
A laptop screen displaying Microsoft Teams

Get teamwork built-in from the start

Make phone calls in Teams and foster teamwork, using Office 365 business voice features like Phone System, Calling Plan, and Direct Routing.1 

Lower the total cost of your phone systems

Get a single business voice solution with flexible deployment options in the cloud, on-premises, or hybrid. With no time-consuming installation, you’ll be making your first Teams call in minutes.
A man walking and speaking into his phone

Ready to make calls in Office 365?

Microsoft business voice solutions

Calling in Office 365 and Teams

Phone System, when paired with Calling Plan and/or Direct Routing, provides a full business calling experience for Office 365 users in Teams on a global scale.1

Skype for Business

Skype for Business is an on-premises communications platform offering enterprise voice features integrated with IM, online meetings, and video conferencing.

Articles about business voice

Unified communications 101: What new businesses need to know
Save time and money using better communication software


"With Office 365, we are revolutionizing the way we think about collaboration. The ease of communication through these shared capabilities makes it less about where you’re located and more about the conversation."

-Beth Codner, Head of Global People, The Kraft Heinz Company


See more from Office 365

The Ultimate Meeting Guide

Unblocking workplace collaboration

Office 365 is designed to help you achieve more


With a seamless experience across your devices, Office 365 empowers you to get more done wherever work takes you.


Designed for today’s workplace, Office 365 protects your organization, your data, and most importantly, your people.


With intelligence at its core, Office 365 gives you the insights and assistance you need to do your best work every day.

Availability of Audio Conferencing and Calling plans varies by country/region.  See countries and regions that are supported for more information.