Description
BusinessPhone – Dialog 4224 Operator / Dialog 3214
8
13 Mute
To switch the microphone on or off. See section “
During Calls
” on
page 35.
14 Loudspeaker on/off
To switch the loudspeaker on or off. See section “
During Calls
” on
page 35.
15 Headset
key
See section “
Headset - Dialog 4224 Operator
” on page 96.
16
Answer/Extend / Enter
a. To answer/extend calls. See sections “
Incoming Calls
” on
page 21, “
Outgoing Calls
” on page 23, “
Call Metering
” on
page 45, “
Group Features
” on page 76 and “
Other Useful
Features
” on page 86.
b. To enter/select information. See sections “
Attendance
” on
page 19 and “
Messages
” on page 62.
17
Volume control
18 Microphone
19
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.
20 Loudspeaker
21
Handset with hearing aid function
Please note:
The handset may attract and retain small
metal objects in the earcap region.