This article is intended for end users on Evolve Teams solution 

To select the mic, speaker, and camera you want Teams to use for calls and meetings, click your profile picture at the top of Teams, then Settings > Devices

Under Audio devices, pick the speaker and mic you want Teams to use by default. 

Under Camera, select the camera you want Teams to use, and see a preview of that camera's video. 

If you have multiple certified devices connected to your computer, you can set one as your secondary ringer, which means it'll ring when a call comes in. Answer incoming calls on any device—not just the ones that ring.

Click your profile picture at the top of Teams, then Settings > Permissions

Enable Media (Camera, Microphone, Speakers) 

Step 1: Go into Windows settings and search for 'Microphone'

Step 2: Select the following: 'Choose which apps can access your microphone' 

Step 3: Toggle ON for Desktop apps to access your microphone 

Step 4: Select/Verify that Microsoft Teams has access to the microphone 

To make a test call with the desktop client, click your avatar (picture) in the top bar and select Settings, then Devices. Make sure that the right audio devices are selected for the test and then click Make a test call 

The test call option in Teams settings