Is there a call in option with TEAMS?

Yes. In Teams, participants can join a meeting by phone if the meeting invite includes a phone number and conference ID.

There are two phone-based options mentioned in the documentation:

• Dial in: Participants use the phone number provided in the meeting details or invite.
• Call me: On the pre-join screen, participants can select more join options > Call me, enter a phone number, and answer the call to join the meeting audio.

For Teams Free, the provided documentation covers starting audio or video calls from chats, but it does not show a phone dial-in option for those calls.

• Call in to a meeting in Teams
• Join a Teams meeting by phone
• Join a meeting in Microsoft Teams
• Make a call in Microsoft Teams Free