Aastra 6771/6773/6775 (OpenPhone 71/73/75) System Phones
19
It is also possible to enable a second person to listen in on a call over a connected
headset while you are telephoning over the handset. To enable, press the headset key
during the call. Listening-in over the headset is now activated, the LED on the headset
key flashes.
Enquiry Key
R
To initiate and end an enquiry call. After you have ended an enquiry call, switch
back to the call being held with this key.
Plus/Minus Key
=
This key offers various functions which depend on the device status:
•
It adjusts the volume during open-listening/hands-free mode.
•
It adjusts the volume when making a call via the handset.
•
It adjusts the volume of the headphones of a headset (the volume of the
micro-
phone
can be adjusted over the
Phone settings
MenuCard, see page 114).
•
It adjusts the volume of the ringer tone during a call.
•
It sets the contrast of the display when the telephone is in the idle state.
•
It switches features on/off quickly.
•
It changes the volume of the ringer tone and the melody in the
Phone settings
MenuCard.
•
It moves the cursor when entering call numbers or text.
Tip:
If you have already used the plus/minus key to open a menu to
set the display contrast or the volume, your current setting will
automatically be applied after three seconds, without your using
the OK key
O
to confirm.
ESC Key
e
(Escape key) navigates the menu.
•
Short key press: Exits an open input window without changing its contents and/or
returns you to the menu branches.
•
Long key press: Exits the menu.
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