Ericsson DT400 User Manual page 82

Audible Adjustments
U
or
f O
f O
O C
82
D
Press the volume controls to adjust the ringer volume in
standby mode
or
O
Press to enter the menu
Select "3 Alerting" and press
Select "1 Ring vol." and press
The Cordless will play a tone.
f
Set the ringer volume and press
Choose between very low, low, medium, high or very high.
Press to confirm and exit the menu
Turn off ringer permanently
You can also turn the ringer off permanently.
When the phone is on hook:
Press and hold the mute button on the right side of the phone
The ringer off icon is displayed:
Now only the red LED will indicate an incoming call.
Note: High priority messages will override this setting.
This action will also mute messages signals for the DT410,
DT420 and DT430 telephones.
Press and hold to turn the ringer on again
The ringer off icon disappears.
BusinessPhone – Cordless DT400/DT410/DT420/DT430