Microsoft 365 Audio Conferencing enables you to join and host online meetings with just a phone. Whether you are on the road, working from home, or in a remote location, you can easily dial in to a meeting using a local or toll-free number, or have the meeting call you back. You can also use Audio Conferencing to communicate with people who don't have internet access or Microsoft Teams app. With Audio Conferencing, you can collaborate with anyone, anywhere, on any device.
Audio Conferencing is included in Microsoft 365 E5 and Office 365 E5 plans, and available as an add-on for other Microsoft 365 and Office 365 plans. You can use Audio Conferencing with Microsoft Teams, Skype for Business Online, and Skype for Business Server. Audio Conferencing supports up to 250 participants per meeting, and offers over 90 dial-in numbers across the world. You can also customize your meeting invitations with your organization's logo, help information, and legal disclaimer.