2N Helios IP User manual, 1510 v1.11 - Manual (Page 74)

Configuration 3.3
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Warning volume
Set the volume of the 2N ® Helios IP signal tones that announce status changes.
Key beep volume
Set the volume of the tone generated whenever a key is pushed.
Lock open volume
Set the volume of the unlocking signalling tone.
Call tones
Set the volume of the dialling, ringing and busy tones if generated by 2N ® Helios IP.
Ringing
Set the volume of the incoming call signalling tone – ringing tone. Incoming calls
are signalled when the automatic incoming call receiving function is off, see the
Miscellaneous subsection.
Microphone Settings
Sensitivity
Set the microphone sensitivity.
AGC (Automatic Gain Control)
Set whether the Automatic Gain Control function should be used.
Noise reduction
Set the mode for noise reduction arising primarily during echo cancellation.
Video
This menu is used to set the video camera. To set the codec properties use the
Advanced Settings –> Video codecs menu, see the Video Codecs subsection.
Brightness
Set the intensity of the video camera stream.
Colour saturation
Set the colour saturation of the video camera stream.
Flip horizontally
Set whether the picture is to be flipped horizontally.
Frame rate decreasing
Enable an automatic decreasing of the frame rate under poor light conditions,
which improves the video quality to the detriment of the frame rate.
Flicker avoidance
Here you can eliminate flicker caused by artificial sources of light such as fluorescent
lamps. The flicker frequency depends on the light source power supply frequency.