Siemens hicom 150 e - Activating;Deactivating the Call Waiting Tone

Answering Calls
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Activating/Deactivating the Call Waiting Tone
You can suppress the call waiting tone for external calls. The call
waiting tone is automatically deactivated when you start up the Hi-
com Attendant P and the call waiting tone off icon appears in
the system bar. The waiting call (second call) continues to be sig-
naled visually in the display.
Activating the Call Waiting Tone
The call waiting tone is reactivated and the call waiting tone off icon
is removed from the system bar.
Deactivating the Call Waiting Tone
The call waiting tone is deactivated and the call waiting tone off icon
appears in the system bar.
Call the pop-up menu.
Select the Camp-on without tone on/off menu option
Call the pop-up menu.
Select the Camp-on without tone on/off menu option.