Ericsson 4422 - Manual (Page 11)

11 BusinessPhone – Ericsson Dialog 4422 IP Office
Description
Hidden key functions
As described above, the keys numbered 8, 9 and 11 have some
hidden functions that are not shown on the keys. Only the standard
symbols are shown (Volume, Loudspeaker and C).
The picture below explains which key to press in each situation:
Lamp Indications
The key lamps on your telephone indicate with different signals the
traffic state of the ongoing call or function.
No
Cancel
Back
Log off*
Down
Change
Up
Erase
Yes
Select
Store
Log on
* Hold for at least one second
Ô
Extinguished lamp The function is not active.
Х Ф
Steady light
The function is active, supervised
extension or trunk is busy, heard
message.
Ц Ф
Slowly flashing lamp New missed call in the Call List.
Ц Ф
Rapidly flashing lamp
An incoming call to a supervised
extension, to a supervised trunk or to
own extension, new message.
Х Ф
Light with short breaks Ongoing call.