https://learn.microsoft.com/en-us/microsoftteams/microsoft-teams-online-call-flows
Mar 30, 2026 · In general, media traffic is highly latency sensitive. You want this traffic to take the most direct path possible, and to use UDP versus TCP as the transport layer protocol, which is the best transport for interactive real-time media from a quality perspective.
https://learn.microsoft.com/en-us/MicrosoftTeams/pstn-connectivity
Apr 23, 2026 · A secure PSTN integration with your Teams tenant is required before any licensed Teams Phone accounts can be provisioned to make and receive telephone calls. In this section, we will discuss options for connecting your tenant with the Public Switched Telephone Network (PSTN).
https://telcobridges.com/blog/connecting-teams-to-the-pstn/
Microsoft draws a clear line between Teams Phone — peer-to-peer calling within the platform — and Teams Phone with PSTN, which is a separate license that extends calling to the public telephone network.
https://expert-advice.org/ms-teams/how-to-set-up-pstn-calling-in-microsoft-teams-complete-guide/
Oct 27, 2025 · Microsoft Teams PSTN calling setup – Enable PSTN calling in Microsoft Teams with this complete setup guide. Learn how to configure Teams Phone, Caller ID, and emergency calling for your business.
https://www.m365.fm/blog/pstn-explained-for-teams-understanding-calling-integration-with-microsoft-teams/
May 13, 2026 · Learn PSTN for Microsoft Teams with practical guidance on setup, licensing, architecture, security, governance, and real-world use.
https://www.journeyteam.com/resources/blog/dont-forget-about-microsoft-teams-minutes/
With this increased usage of Microsoft Teams and meeting usage, we have seen a few of our customers hitting their max pooled minutes of dial-in or dial-out via Public Switched Telephone Network (PSTN) minutes.
https://www.pure-ip.com/blog/microsoft-teams-pstn-calling-explained
This guide explains how PSTN calling Microsoft Teams works in practice, the different ways organizations can connect Teams to the PSTN, and why many enterprises are replacing legacy PBX systems with Teams as their primary voice platform.
https://mscloudexplorers.com/microsoft-teams-pstn-call-system-setup-guide/
Apr 8, 2025 · Unlock the full potential of Microsoft Teams PSTN Call System and Plans. Learn how to assign phone numbers, set up Auto Attendants, manage Call Queues, and more.
https://www.epcgroup.net/how-to-turn-on-pstn-conferencing-in-microsoft-teams
2 days ago · PSTN conferencing -- also referred to as Audio Conferencing in Microsoft's current terminology -- connects the traditional telephone network to Microsoft Teams meetings. When enabled, meeting invitations include a dial-in phone number and a conference ID.
https://telnyx.com/resources/microsoft-teams-phone-user-guide
Oct 16, 2024 · Here we'll take a closer look at the different ways businesses can access Public Switched Telephone Network (PSTN) calling in Microsoft Teams so you can choose the best option for your business. You can choose from a number of Microsoft-approved Operators to run Operator Connect or Direct Routing.
