Ericsson DIALOG 4220 - Manual (Page 18)

Incoming Calls
Dialog 4220 Lite/Dialog 4222 Office 18
Call Waiting
If the calling party has activated Call Waiting, you can receive a
second call even if Free on 2nd is not activated.
To answer the waiting call: í
Press to terminate the connected call.
Your phone will ring to announce the waiting call. Ц Ф
Line Press the flashing Line key to receive the new call.
Do not disturb, DND
When you activate DND, calls to your extension are not indicated.
Outgoing calls can be made as usual.
DND
Ô
Press to activate or deactivate DND.
Note: Function key preprogrammed by your system
administrator. You can also use the procedure below. *27#
Dial to activate,
Special dial tone.
or #27#
dial to deactivate.
í
Press to finish activation/deactivation.
Note: If your phone is programmed with “Multiple Directory
Diversion and Do not disturb” (ask your system
administrator), DND is ordered and cancelled
simultaneously on all lines. This function is only available in
newer versions of the exchange.