Aastra Dialog 4225 Vision User Manual

113Dialog 4223 Professional/Dialog 4225 Vision
Accessories
To activate Headset Preset:
Í
Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard, and the Headset Preset
symbol is shown in the display.
Note: You can also activate Headset Preset, via the
PhoneSet
menu.
To cancel Headset Preset:
 Press and hold for at least 4 seconds.
A short acknowledgement tone signal is heard, and the Headset Preset
symbol is switched off in the display.
Note: You can also cancel Headset Preset, via the
PhoneSet menu.
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.
To adjust the volume for the loudspeaker of the phone during Group
Listening:
ÏÍ
Press.
ì Press to change the volume.
The Loudspeaker volume level is stored.
Í
Â
Press.
For those with impaired hearing, the headset hearing volume level can
be further amplified, use the same procedure as described in section
“Handset and loudspeaker volume” on page 99.

Aastra Dialog 4225 Vision Specifications

General

Brand	Aastra
Model	Dialog 4225 Vision
Category	Telephone
Language	English