User guide

Basic Functions
35
To adjust the volume of the receiver/headset press the F arrow keys. To adjust
the volume of the loudspeaker switch the loudspeaker on first and then press the
F arrow keys.
Set volume via the
F arrow keys or the number keys. Pressing the F arrow keys
once raises or lowers the volume by one level.
Note:
When the device is idle once again, it reverts to the default setting. You can
change this information in the “Settings” menu (see page 72).
Switching off Ringer
If you wish to be sure you are not disturbed (e.g. during a meeting) you can switch
off the ringer. Incoming calls are then signalled noiselessly via the built-in
vibration signal generator (if activated) instead of the ringer. When the acoustical
ringer is activated, the symbol appears on the display.
Switching off Ringer
* When idle, press the star key – long key press.
Switching on ringer
* When idle, press the star key – long key press.
Alternatively you can switch the ringer on/off via the “Settings > Ringer Settings >
Device > Buzzer” menu (see page 71).
Muting Mobile Unit
If you do not want the caller to hear, e.g. what you are discussing with someone
else in the room, you can temporarily mute your mobile unit.
Muting
Press the softkey. The person you are speaking with on the telephone can no
longer hear you.
Cancel muting
When you wish to talk to the caller again, press the softkey once again. The
caller on the telephone can hear you again.