Description
12Mute
To switch the microphone on or off. See section “During Calls” on page 35.
13Loudspeaker on/off
To switch the loudspeaker on or off. See section “During Calls” on page 35.
14Clear
To disconnect calls or to clear the display in programming.
15Microphone
16Optional key panel (A-Q)
17
Note: If one or two key panels are used, the optional key panel DBY 409 01 may be used. However, if three or four key panels are used, all optional key panels must be of type DBY 409 02.
17Loudspeaker
18Handset with hearing aid function
Please note: The handset may attract and retain small metal objects in the earcap region.
BusinessPhone – Dialog 4223 Professional / Dialog 3213 | 11 |