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11Dialog 4223 Professional/Dialog 4225 Vision
Description
6Callback
Indicating/activating Callback. See section “When you receive a
busy tone” on page 40. The feature can be removed or moved to
another programmable function key by your system administrator.
7 Diversion (Follow-me)
Indicating/activating and deactivating Diversion (Follow-me). See
section “Call Forwarding” on page 62. The feature can be removed
or moved to another programmable function key by your system
administrator.
8 Programmable function keys
Program numbers or features. See section “Programming of
function keys” on page 98.
Note: The key marked with a “b” is also used to program a
melody, see section “Melody Ringing” on page 109.
9 Triple Access Line
Handle calls. Line 1 and 2 are available both for incoming and
outgoing calls. Inquiry can only be used for outgoing calls.
10 Microphone
Used for handsfree conversation.
11 Clear
Disconnect calls or exit a feature. Can always be pressed instead of
replacing the handset.
12 Headset key
Handle headset calls and activate Headset Preset. See section
“Headset (optional)” on page 118.
13 Loudspeaker on/off
a. Activate handsfree conversation. See section “During Calls” on
page 52.
b. Activate Loudspeaker Preset. See section “Headset Preset” on
page 119.
14 Mute
a Switch the microphone on or off during a call. See section
“Mute” on page 53.
b Switch off the ring signal in idle mode or when ringing. See
section “Mute ring signal” on page 108 and “Silent Ringing” on
page 108.
15 Volume control
Adjust the volume. See section “Settings” on page 98.
16 Loudspeaker