Panasonic BB-HCM311A Operating Instructions Manual page 26

Listen Button
Talk Button
: You can talk from the
camera using the PC's
microphone. Clicking the
button stops temporarily
stops the audio.
: The audio is stopped.
Clicking the button again
starts the Talk feature.
: You can listen to the audio
around the camera.
Clicking the button
temporarily stops the
audio.
: The audio is stopped.
Adjustment Bar
(Volume adjustment only for listening)
This slider adjusts the volume. To the right side, the
volume is larger. To the left side, the volume is smaller.