Ericsson DT288 User Manual page 63

BusinessPhone - Portable DT288
Ringer volume
There are 7 ringer levels. At the lowest level, the ringer is shut off.
Handset
Access
Alerts
Access
>RingVolume
Press
A volume level bar is displayed.
Use the arrow keys to set the suitable level
Press to confirm
Turn off ringer permanently
You can also turn the ringer off permanently.
When the phone is on hook:
Press
The ringer off icon is displayed.
Press and hold to turn the ringer on again
The ringer off icon disappears.
Adjustments
63