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85Dialog 4220 Lite/Dialog 4222 Office
Accessories
To activate Headset Preset:
Í
Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard, and the headset
key lamp flashes for a few seconds.
To cancel Headset Preset:
 Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard, and the
loudspeaker key lamp flashes for a few seconds.
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
Use the Volume keys to change the volume of the headset.
ì Press to change the volume.
On the Dialog 4222 Office phone, a volume symbol is shown for a
few seconds (replacing your extension number). The set headset
volume level is stored.
To adjust the volume for the loudspeaker of the phone during
Group listening:
ÏÍ
Press.
ì Press to change the volume.
On the Dialog 4222 Office phone, a volume symbol is shown for a
few seconds (replacing your extension number). The loudspeaker
volume level is stored.
Í
 Press.
For people with impaired hearing, the headset hearing volume level
can be extra amplified, use the same procedure as in section
“Handset and loudspeaker volume” on page 75.