Microsoft Teams Phone is Microsoft’s technology for enabling call control and Private Branch Exchange (PBX) capabilities in the Microsoft 365 cloud with Microsoft Teams.
Teams Phone works with Teams clients and certified devices, and allows you to replace your existing PBX system with a set of features directly delivered from Microsoft 365.
Calls between users within your organization are handled internally within Teams Phone, and never go to the Public Switched Telephone Network (PSTN)–thereby removing long-distance costs on internal calls.
PSTN Connectivity
For making external calls, Teams Phone provides add-on options for connecting to the PSTN. For more information about voice solutions and PSTN connectivity options, see Plan your Teams voice solution and Connect to the PSTN.
Going from PSTN to cloud can be tricky. In this Double Click episode from the M365 team they break down Microsoft Teams Calling Plans, Operator Connect, Teams Phone Mobile, and Direct Routing, also discussing combining approaches to meet the unique needs of companies as well as best practices before you kick off your deployment.
In this presentation the Microsoft Mechanics teach you how to use PSTN telephony options with Microsoft Teams Phone. Teams ties together all of the different communications modalities, so you can easily move from one modality to the next.
Shift from a text-based chat to a one-on-one voice call. And just like with a video conference, you can easily add people to it to make it a group call.
Beyond pure voice calling, there are rich PSTN telephony capabilities that are available inside of Teams, and they’ve made it a lot easier to bring any endpoint, including your physical desktop phone to Microsoft Teams, or use the built-in calling functionality that’s inside of Teams itself.
- Operator Connect helps you bring over your existing phone numbers directly from your telephone service operator of choice into Microsoft Teams.
- Receive calls from and make calls to normal telephone numbers anywhere, on any device.
- Seamlessly transfer calls from your laptop to your mobile device, without having to hang up and redial.
- Turn on live captions with real-time speech-to-text AI conversion if you’re in a noisy environment.
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