Users who sync their MultiLine calls with Microsoft Teams app, will now have the option to silence the ring on the MultiLine app so that both apps don't ring for incoming calls simultaneously. For the best calling experience, we recommend users that receive calls on the Microsoft Teams mobile app to silence ringing in MultiLine.
When users activate MultiLine, or when Microsoft Teams calling is enabled for the first time, users will see a notification giving them the option to turn it off. If the user changes their mind later, they can change it in their Call Settings. See Control MultiLine ring when using Teams.