Axis 213 PTZ User Manual page 25

AXIS 213 - Configuring the PTZ Network Camera
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When using Half-Duplex mode, the Push-To-Talk button will be visible. Select the
mode to use for this button. Selecting Toggle means that when the button is pushed it
will remain so until pushed a second time. Instant means that the button will remain
active (pushed) until released.
Optimize the sound by enabling or disabling slope filter, line echo cancellation,
acoustic echo cancellation depending on your application.
Set the level of noise reduction using the Noise canceller attenuation and Noise
canceller I/O gain settings.
Adjust the Volume Settings settings for Volume in, Volume out and Mic input
sensitivity to a suitable level depending on your application.
Adjust the Client Settings for the connected speaker and microphone.
Please use the online help files for more information.