Via The Audio Screen - Polycom ViaVideo User Manual

Chapter 2
ViaVideo User's Guide
displayed in the far site view. ViaVideo maintains your audio mute
setting between calls.

Via the Audio Screen

The Audio screen (System Info>Setup>Audio) lets you set Master,
Wave, and Line In audio levels. To set these levels, click the
Volume Control button in the Audio setup screen.
Volume control
Mute
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Using ViaVideo
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