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USB Audio can be set to Always Enabled, Always Disabled, User Determined,
or USB calls only. On “Always Enabled” the USB audio path for the
microphones and speakers is always open unless the USB call is put “on hold”
from the dialer. The “Always Disabled” setting disables the USB audio path and
it cannot be enabled from the dialer. “User Determined” allows the user to
switch USB audio on and off from the dialer. And finally “USB calls only”
allows the USB audio path only to be activated when the connected device
signals that a USB call is in progress. This depends on the UC application.
The Highly reverberant room setting activates a filter that limits audio
frequencies found in reverberant rooms. The FLX UC 1000 and FLX UC 1500
conference phones have been designed to provide the truest audio experience,
capturing the audio in the room as it is experienced in the room itself.
However, specifically when used with codecs limiting the audio to a narrow
frequency bandwidth, this might cause an over-representation of low
frequencies. The Highly reverberant room setting limits these frequencies.
Room size allows specifying the size of the room in which the FLX UC 1000 or
FLX UC 1500 is being used. It affects the behavior of the gain control to
ensure that in larger rooms everybody is heard, and in smaller rooms sounds
that are not coming from the meeting itself are not gained.
