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The Advanced Audio submenu enables the user to specify audio settings and
the room environment.
Default Call Line defines the behavior of the green off-hook button. By default,
this setting affects the VoIP call and takes the phone line off-hook. When the
Default Line is set to USB, pressing the off-hook button will send an off-hook
signal on the USB interface instead. If None is selected, the user is asked
which interface should be activated when pressing the off-hook button.
Room size allows specifying the size of the room in which the FLX UC 1000 or
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.
Speaker EQ provides three pre-defined EQ settings to improve the speaker
audio. We recommend using the Voice Enhance setting.
High Pass filters should be enabled in rooms with high background noise.
These noises are typically in the low frequency level, selecting an appropriate
High Pass Filter will eliminate these frequencies.
The Highly Reverberant Room setting activates a filter that limits audio
frequencies found in reverberant rooms. A room might be highly reverberant
when it has one or more window walls, wood or concrete floor, or concrete
ceiling. An echo can be heard in these rooms for example when clapping
hands. The FLX UC 1000 and 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. This might cause an over-representation of low
frequencies in reverberant rooms. The Highly Reverberant Room setting limits
these frequencies.
