Ericsson DT288 User Manual page 85

You can now also use the or key to
V O L U M E U P V O L U M E D O W N
change the volume. Each time you press or
V O L U M E U P V O L U M E
, you hear the ring at the new volume. If you set the volume to its
D O W N
lowest level, the ring off icon appears.
3. Press to confirm.
YES
Settings 85