Call Park provides you the ability to park an active call and then allow yourself or someone else to pick up the call using a (specific) code. You communicate the code out-of-band.
Call Park Feature
Parking a call: you can park an active call by clicking on the “Park” button in the call control.
If no one retrieves the call within 5 minutes, it will ring you back. If you don’t pick-up the call, it will follow your configured unanswered roles (i.e. voicemail if configured).
Call Retrieve: to retrieve a parked call, you can click on the call pickup button on your Teams Calling App, and enter the retrieve code
Call park and retrieve feature availability
Call park and retrieve is currently supported by the following clients and devices. (Supported in Teams Only mode, with or without PSTN connectivity.)
Configure call park and retrieve with PowerShell
Use the New-CsTeamsCallParkPolicy PowerShell cmdlet to create a call park policy.
Use the Grant-CsTeamsCallParkPolicy PowerShell cmdlet to grant a call park policy.
You can change the default setting by using Set-CsTeamsCallParkPolicy as follows:
Set-CsTeamsCallParkPolicy -Identity Global -AllowCallPark $true