Keeping this in consideration, who can start a Microsoft teams meeting?
Previously, free accounts could join meetings, but couldn't initiate them; now, anybody can start a Teams meeting. And currently, Teams doesn't put a cap on the length of the meeting or the number of participants (although, according to Microsoft, this is due to the COVID-19 crisis, so that may change in the future).
Furthermore, can anyone call into a Microsoft teams meeting? People can call in to Teams meetings using a phone, instead of using the Teams app on a mobile device or PC. You only need to set up Audio Conferencing for people who plan to schedule or lead meetings. Meeting attendees who dial in don't need any licenses assigned to them or other setup.
Simply so, can anyone start a Teams meeting?
Only people in your Teams org and external guests from trusted organizations can get into your meetings directly. You want some external guests to wait in the lobby so you can approve them one by one. Anyone who has access to the meeting link gets into the meeting directly, including people who call in.
How do you let someone into a Teams meeting?
If you already have the Teams app, the meeting will open there automatically. If you don't have a Teams account and the organizer has allowed it, you may have the option to enter your name to join the meeting as a guest. If you do have a Teams account, select Sign in to join with access to the meeting chat and more.
