Ericsson DT590 - Manual (Page 107)

107 BusinessPhone – Cordless DT590
Settings
Volume Control
You can adjust the volume in the ear piece, of the loudspeaker for
handsfree speaking and the volume of the ringer. Use the volume
keys to adjust the volume, see section “ Description ” on page 13 for
the location of the volume controls.
To turn the microphone, ringing sound and warning sound on or off
during a call, see section “ During Calls ” on page 40.
Adjust loudspeaker volume for handsfree speaking U
or
D
Press to adjust the volume during a call.
Adjust ear piece volume U
or
D
Press to adjust the volume during a call.
The phone will now store and keep the new volume level.