Ericsson DIALOG 4422 - Manual (Page 90)

Accessories
Dialog 4422 IP Office 90
Headset Preset
By default the phone is set to Loudspeaker Preset mode, so that
calls are connected to the loudspeaker when you answer or make
calls by pressing a Line key. Also when you dial the number without
lifting the handset, the call is automatically connected to the
loudspeaker.
When you use a headset for your telephone, you can change the
setting to Headset Preset mode to get calls connected to the
headset instead. In Headset Preset mode you can make headset
calls by pressing digits directly (direct dialing). You can also answer
headset calls by pressing a Line key.
Notes:
Independent the type of preset setting, when you lift the
handset the call is always connected to the handset.
Also monitoring works as usual, that is when the
Loudspeaker key is pressed, the call is temporarily
connected to the loudspeaker. Monitoring is only available
for the Dialog 4422 v. 1 phone.
Activation and deactivation of Headset Preset can only be
done when the phone is in idle mode.
To activate Headset Preset:
Í
Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard.
To cancel Headset Preset: Â
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.