Ericsson DIALOG 4223 PROFESSIONAL - MANUAL 2 User Manual page 104

Settings
Å
Down
or
Select
Change
104
Dialog 4225 Vision:
PhoneSet
Select
Up
Press to frame
Press (see display).
A tone signal is heard, and the display shows the current setting.
The Line 1 key lamp also indicates the current setting;
key lamp off=standard level, key lamp on=increased level.
Press to change the volume level (see display).
The display shows the new setting. The Line 1 key lamp also
indicates the new setting as described above.
Exit
Press to finish setting (see display).
When extra amplification has been selected, the Line 1 key lamp
turns off.
in the top menu (see display).
Set Hearing Level
Dialog 4223 Professional/Dialog 4225 Vision
(see display).