AASTRA 4425 IP Vision (SIP) for MX-ONE User Guide - Manual (Page 103)

Accessories
Dialog 4425 IP Vision 104
Headset (optional)
To install the headset, see section “ Installation ” on page 121.
The following headset features are available.
Answer calls
Í
Press to answer.
The Headset key lamp is turned on.
Note: When the phone is set for Headset Preset, you can
also press the flashing Line/Hold key to answer the call. See
section “ Headset Preset ” on page 105 . í
Press to terminate the headset call.
Make calls
Í z
Press and dial the number.
The Headset key lamp is turned on.
Note: When the phone is set for Headset Preset, you can
dial the number directly without pressing the Headset key,
or you can press the Line/Hold key instead of the Headset
key. See section “ Headset Preset ” on page 105 . í
Press to terminate the call.
From headset to handset u
Lift the handset.