Description
BusinessPhone – Dialog 4222 Office / Dialog 3211 & 32128
13 Volume control
To adjust the volume. See section “Settings” on page 88.
14 Microphone
15 Optional key panel
17 Dual-Function programmable keys.
Note: Use only an optional key panel of type DBY 419 01.
16 Loudspeaker
17 Handset with hearing aid function
Please note: The handset may attract and retain small
metal objects in the earcap region.
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