What is “Busy on Busy” feature in Microsoft Teams?
Busy on Busy, also sometime referred to as “Busy Options” is a setting in Teams calling policies that lets you configure how incoming calls are handled when a user is already in a call or conference or has a call placed on hold. This feature has been in Teams since May of 2019 but with only two option, Enabled or Disabled. Setting Busy on Busy to Disabled would allow a second call to ring a user even if that user is already in a call or meeting. Setting it to Enabled would play a busy dial tone to the caller if the callee is in a call.
What’s new?
What’s new is the “Unanswered” option, if Busy on Busy is set to “Unanswered” when a caller calls a user that is on another call the user’s unanswered settings will take effect, such as routing to voicemail or forwarding to another user.

Hi Ken. Thank you for this post. That’s a good feature. Good to know
This is great, do we know when the option will be available in the teams admin portal?
Unfortunately I have not heard anything on this yet, but I would assume we will see it in the TAC at some point.
How do you set the Busy on Busy to the “Unanswered” mode?
I am not seeing this as an option.
Thank you!
The Unanswered option is only available in PowerShell right now. Here is the Microsoft doc for it. https://docs.microsoft.com/en-us/powershell/module/skype/set-csteamscallingpolicy?view=skype-ps
This is one win for Teams Voice.
Busy-on-Busy Unanswered mode now available in Teams Admin Centre>Voice>Calling Policy
Great content! Keep up the good work!