Only list audio devices associated with open views
If your XProtect VMS system contains large numbers of microphones and speakers, the lists for the microphone and speaker on the Audio pane might be long. The number of audio devices can make it difficult to find the audio devices you're looking for.
To avoid this scenario, you can limit the lists to only show devices that contain microphones and speakers relevant to the currently opened views.
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On the Audio pane, select List only devices from current view.