2N Indoor Talk User Manual page 74

By default, all the buttons are backlit according to the selected brightness level.
Incoming Call
Incoming call
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Parental
lock
press
activation
simultaneously
for 3 seconds
Button
brightness
press
setting
simultaneously
for 3 seconds
Call
answering
press
Call muting
press
Press the buttons at the same
time to activate the parental lock;
the yellow lock symbol is
illuminated.
The device gets in the button
brightness selecting state.
The device gets in the Call state.
The call answering button is
flashing: green if the call is
coming in from an IP intercom
/2N indoor answering unit and
blue if the call is coming in from
a third-party device. The lock
shines yellow, the call end
button is red. The other buttons
are illuminated blue according
to the set brightness level. The
volume and mute buttons are
available, DND is inactive.
The device goes over to the
silent (DND) mode. The call
answering button is illuminated
blue, the lock is yellow and the
call end button is red. The other
buttons are illuminated blue
according to the set brightness
level.
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