AASTRA 4422 IP Office (SIP) for MX-ONE User Guide - Manual (Page 11)

11 Dialog 4422 IP Office
Description
Hidden key functions
The Volume key, Loudspeaker key and Clear key have some
hidden features that are not shown on the keys. Only the standard
symbols are shown (Volume, Loudspeaker and C).
The picture below shows which key to press in each situation:
Lamp indications
Up
Previous
Erase
Down
Next
Change
No
Cancel
Exit
Log Off *
* Keep pressed for at least 1 sec
Yes
Select
Store
Log On
Ô
Extinguished lamp The feature is not active.
Х Ф
Steady light
The feature is active or the multiple
represented line is busy.
Ц Ф
Slowly flashing lamp The line (or feature) is put on hold.
Ц Ф
Rapidly flashing lamp An incoming call.
Х Ф
Light with short breaks Ongoing call.