Tadiran Telecom Coral SeaBeam Installation And Configuration Reference Manual page 39

Table 8 General Pane,
Devices Tab
34 Configuring the Coral SeaBeam
Area Field
Speaker
device
Microphone
device
Use acoustic
echo
Headset
cancellation
(AEC)
Use auto gain
control (AGC)
Use noise
reduction
Description
Change these fields only if you want to override
the devices that Coral SeaBeam automatically
selected.
In both these fields, select the headset you are
using.
The headset is the device that is usually used for
audio out (the sound you hear) and audio in
(recording your voice). The only case in which the
headset is not used is when the SPEAKER PHONE
button on the keypad is activated.
Therefore, unless you will always be using Coral
SeaBeam in speakerphone mode, you must make
a selection here.
Reduces the echo effect that can arise with a
speakerphone or that can arise if the sound from
the speakerphone or headphone leaks into the
microphone. Turning this feature on improves
sound quality.
The recommended setting is On.
Automatically adjusts the microphone volume
level so that the other party does not hear the
distortion that might be caused by too high a
microphone input or too low volume (due to too
low input level).
The recommended setting is On.
Automatically attempts to remove background
noise.
Typically Off for the headset.
Coral SeaBeam Installation and Configuration Manual