Based on your description, we recommend that you use Call Analytics and Call Quality Dashboard to find and troubleshoot calling issues during ongoing operations. Both tools are located in
the Teams admin center. You could troubleshoot user calls as follows.
- Open the Teams admin center (https://admin.teams.microsoft.com) and sign in with your Teams communications support or Teams Administrator credentials.
- On the Dashboard, in User Search, start typing either the name or SIP address of the user whose calls you want to troubleshoot, or select View users to see a list of users.
- Select the user from the list.
- Select Call history, and then select the call or meeting that you want to troubleshoot.
- Select the Advanced tab, and then look for yellow and red items which indicate poor call quality or connection problems.
For more details about call quality for Microsoft Teams, you could refer to: https://learn.microsoft.com/en-us/microsoftteams/monitor-call-quality-qos
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