Operation Manual

4
English
Accepting door calls
The ringing tones for the
front door and apartment
door are different. When a
visitor presses the door bell,
the handsfree telephone
rings and the speech button
ashes.
The call can be accepted by
pressing the speech button
within 45 seconds after the
last ring tone.
During the call,
the speech
button is
alight. The call is ended by
briefly pressing the speech
button again. The bus
handsfree telephone only
ever transmits speech in one
direction and switches over
automatically. If the auto-
matic switchover function
does not work due to loud
incidental noises at the door
station, it is possible to force
switchover of the speech
direction from the apart-
ment station to the door
station by pressing and
holding down the speech
button in the centre. If this
button is released, speech
direction switches over from
the door station to the
handsfree telephone.
Speech volume
During a call, the speech
volume can be set by
pressing + or – at the
speech button.
Actuating the door
release
When you press the door
release button, the door
from which the last call
came is opened for 3 sec-
onds.
Switching on the
light
When you press the light
button, the lighting is
switched on, provided this
has been connected by your
electrical installer.
Muting the bell
When the mute button
is pressed briefly, all the
ringing tones are switched
off or on again. The button
lights up red to indicate that
the mute has been acti-
vated. If a visitor rings the
doorbell, the button flashes
for as long as the hands-
free telephone is muted.
Dial the door
station
Press the
speech button twice to
make a speech connection
to the door station from
which the last call came.