AASTRA 7446ip (5446ip) for MD Evolution User Guide EN - Manual (Page 23)

Dialog 5446 Description
Note: The headset preset mode can only be activated and deactivated when
the phone is in idle mode. When you lift the handset to answer an
incoming call, the call is automatically connected to the handset,
regardless of which preset mode is active.
17 7/1553-DBC 446 01 Uen B4 2008-09-16