| Configuring the Audio Settings | 123
Parameter Description Configuration Method
Line AEC
Enable or disable echo
cancellation for line input
device.
• On- eliminate the echo to
the line input devices. If you
select an acoustic device (for
example: a microphone) to
be the line input, you can
enable this configuration.
• Off- do not eliminate
the echo to the line input
devices. If you select a non-
acoustic device (for example:
a mobile phone) to be the
line input, you can disable
this configuration.
Note: the default value is Off.
This configuration is available
only when Audio Input is set to
Line Input/USB to Line input.
If you change this parameter, the
system will reboot to make the
change take effect.
Web user interface
Audio Line In
Configure the volume of line
input device.
Note:
• Valid value: Integer from
-50 to 50dB.
• The default value 0 means
to use the default sending
volume. The value you set is
based on the default value.
• This configuration is
available only when Audio
Input is set to Line Input/
USB to Line input. If you
change this parameter, the
system will reboot to make
the change take effect.
• It is not applicable to VC200.
Web user interface
Note:
If VCS Phone is set as the audio output device manually or automatically, the audio input device must be
VCS Phone or VCS Phone+Wireless Microphone.
Related information
Audio Input Type
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