Prerequisites: Ensure that the following prerequisites are met:
The user is defined in the Azure AD tenant.
The user has the Microsoft E5 license.

A phone number is assigned to the user.

The correct country is assigned to the number.

The user is added to
CallCabinetRecordingGroup
To configure MS Azure and MS Teams Admin for Teams Phone Mobile Capture:
Log in to the Microsoft Teams admin centre at https://admin.teams.microsoft.com/phone-numbers.
Assign the phone number to the UPN.

Set up Teams Phone Mobile by following the steps mentioned in the Prerequisites section and contact your Smarsh representative to define the source as Teams Capture.