Ericsson DIALOG 4220 - Manual (Page 30)

Outgoing Calls
Dialog 4220 Lite/Dialog 4222 Office 30
Authorization code, common (optional)
If you are assigned to use a common authorization code (1 to 7
digits) you can temporarily change any used phone within the
exchange to the authority level connected to this code. You can
use the code for one call only or you can open the phone to some
calls and lock it when leaving the phone.
To use for a single call: *72*
Dial.
z #
Enter authorization code and press.
Verification tone. z
Dial the digit or digits to get an external line and the external
number.
To open an extension for some calls: #73*
Dial.
z #
Enter authorization code and press.
Verification tone.
To lock an extension: *73*
Dial.
z #
Enter authorization code and press.
Verification tone.