Description
12Headset
See section “Headset - Dialog 4223 Professional” on page 114.
13Volume control
To adjust the volume. Also space/backspace in writing mode.
14Clear
To disconnect calls or to clear the display in programming.
15Microphone
16Optional key panel
17
Note: Use only optional key panels of type DBY 419 01.
17Loudspeaker
18Handset with hearing aid function
Please note: The handset may attract and retain small metal objects in the earcap region.
8 | BusinessPhone – Dialog 4223 Professional / Dialog 3213 |