AASTRA 6739i for OpenCom 1000 User Guide EN - Manual (Page 15)

Using the Aastra 6739i
11
Other Device Functions
Handsfree / Open-Listening Mode
You can make a call in the handsfree mode, e.g. to let anyone present in the room
listen in. To do so, press the Loudspeaker key
before or during a call. The
speaker is switched on. The red LED indicator next to the handsfree key lights up.
Press the key once again to switch the speaker off.
Mute Function
If you do not want the caller to listen in to what, e.g. you are discussing with
someone in the room, you can temporarily mute the telephone. During a call press
the mute key
or the Mute softkey. The microphone is switched off. The
red LED indicator next to the key blinks and your caller can no longer hear you.
Press the mute key
once again or the Mute softkey to switch the micro-
phone back on.
Adjusting Volume Level
You can adjust the volume of the ringer, of the handset or of the speaker with the
volume keys
.
■ During call signalling you can adjust the volume of the ringer.
■ While making a call, you adjust the volume of the handset or – in the handsfree
mode – the volume of the speaker.
Call Protection
You can configure a do not disturb function key on the Aastra 6739i (see Web
Configurator of the OpenCom 1000 starting on page 20).
1. Press the do not disturb (DND) function key to activate call protection.
The function key lights up red. Callers now receive the busy signal. Internal
callers with system terminals also receive No Answer on the display.
2. Press the function key once again to deactivate the call protection function.