User guide

81Dialog 4422 IP Office
Accessories
To activate Headset Preset:
Í
Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard.
To cancel Headset Preset:
 Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard.
To check the current preset setting:
Ô Line 1 Press.
Either the Loudspeaker or Headset key lamp is turned on,
indicating the current preset setting.
í Press.
Headset volume
During a call, use the Volume keys to change the volume of the
headset.
ì Press to change the volume.
The set headset volume level is stored.
For people with impaired hearing, the headset hearing volume level
can be extra amplified, use the same procedure as described in
section “Handset and loudspeaker volume” on page 75.