Siemens 500 economy User Manual

This function is only available if it has been configured 
by the service technician (contact your service person-
nel).

Precondition: You have dialed an internal number and 
hear a busy signal. It is important that you reach the 
called party.

Select and confirm.

F?;

Enter the code.

The called party and person to whom this party is talk-
ing hear an alerting tone every two seconds.
If the called party has a system telephone with display, 
the following appears on the screen: "Override: (station 
no. or name)".

You can now start talking.