AASTRA 4223 Professional for BusinessPhone User Guide User Manual
Page 8
Description
BusinessPhone — Dialog 4223 Professional / Dialog 3213
8
12
Headset
See section “
Headset - Dialog 4223 Professional
13 Volume
control
To adjust the volume. Also space/backspace in writing mode.
14 Clear
To disconnect calls or to clear the display in programming.
15 Microphone
16
Optional key panel
17 Dual-Function programmable keys per key panel. Four panels
can be connected.
Note: Use only optional key panels of type DBY 419 01.
17 Loudspeaker
18
Handset with hearing aid function
Please note: The handset may attract and retain small
metal objects in the earcap region.
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