Description
13Volume control
To adjust the volume. See section “Settings” on page 87.
14Microphone
15Optional key panel
17
Note: Use only an optional key panel of type DBY 419 01.
16Loudspeaker
17Handset with hearing aid function
Please note: The handset may attract and retain small metal objects in the earcap region.
8 | BusinessPhone – Dialog 4222 Office / Dialog 3211 & 3212 |