Talkback allows you to communicate with your contributors via a microphone input of your choice. This is useful for checking your guests are ready to go live, making them aware of any last minute changes or instructing them on being in the correct position within the frame.
Talkback to contributors can be achieved in two ways, one to allow you to talkback to individual contributors in or out of a call in any type of room and the other to all participants within the Conference room. To talkback to an individual contributor, click the 
icon next to a device or guest.
Within the contributor settings window, press View Preview.
A preview of the selected contributor will appear. To select the device you wish to use as a Talkback microphone, select it from the available devices in the Intercom drop down menu.
Next, to talkback, select the 
icon to unmute yourself. Once you have finished talking to your guest, click 
to mute talkback again.
This method allows you to communicate with one guest at a time, to communicate with an entire room you will need to activate talkback in another way.
The second way to use Talkback to all participants within a Conference room is by using the Preview Window.
To open the Preview Window click the 
icon next to the Conference Room name.
In order for the Intercom to work you'll need to Start Video Tiling.
Make sure you have the correct device selected in the drop down menu.
To start talking to the room, unmute the microphone by clicking the icon.
Once you are finished, click the icon to mute the Intercom again.
