Click the Telephone Handset button to open a two way audio path.
The button turns red and a Call Ringing message appears. Call Connected appears when the audio
connection is established.
Place the cursor over the Volume slider, hold the left mouse button down and set the volume to the
desired level.
The PC's microphone may be muted by clicking the Microphone button. A red ring with a line through
it is placed over the microphone icon.
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