User manual

Working with the Web Pages
Page 31
9.4 Audio #
Audio # page
Enabling/Disabling audio
Using the Enable check box at the top of the Audio page, you can enable/disable the entire audio
functionality (the latter, for example, to prevent unwanted eavesdropping). Remember to Save
the configuration to make it effective.
Input Settings
Input select
Line, Microphone, or Microphone + bias.
Input termination
Can be set to High-Z or 600 ohms, to match audio source.
Mute
Select or clear this box to respectively mute or unmute audio.
Enable AGC
To adjust the gain to an appropriate level, Automatic Gain Control reduces the
volume if the signal is strong and raises it when it is weaker.
Input gain
Range: [0…30] dB. Is disabled when AGC is enabled. Drag the sliding button or type
a value. Gain control reacts directly, without the need to press Save.
Input level
VU meter to display audio input level.
Profile
Preset combinations of settings. A non-standard setting configured through the
Advanced Settings gives ‘--’ in the Profile selector.
G711 A-law. 1 ch. 8 kHz
64 kbit/s
 default setting
 mainly used in Europe
 mono, low quality
 used for QuickTime