Radio telephone system and method of displaying subscriber data icons

DETAILED DESCRIPTION Accordingly, an object of the present invention is to provide a radio telephone system and a method of displaying subscriber data on the screen of a radio telephone that eliminates the necessity to access the center or control section of a radio telephone system in order to confirm the setting or status of installed additional functions.
Another object of the present invention is to provide a radio telephone system and a method of displaying subscriber data on the screen of a radio telephone that improve the convenience and operability of installed additional functions.
Still another object of the present invention is to provide a radio telephone system and a method of displaying subscriber data on the screen of a radio telephone that solve the problem or problems caused by the fact that the setting or status in the center or control section does not accord with the data displayed on the screen.
A further object of the present invention is to provide a radio telephone system and a method of displaying subscriber data on the screen of a radio telephone that provide equivalent services to multifunction telephones.
The above objects together with others not specifically mentioned will become clear to those skilled in the art from the following description.
According to a first aspect of the present invention, a radio telephone system having additional functions is provided.
This system comprises: (a) an exchange device for connecting/disconnecting telephone lines; (b) a storage device for storing a subscriber database; the subscriber database containing subscriber data of the system and status data about status of the additional functions; and (c) a radio telephone connectable to the exchange device by radio; the telephone having a screen for displaying specific icons corresponding to the status data; wherein when a piece of the status data in the subscriber data has been changed, an icon signal corresponding to the piece of status data thus changed is sent to the telephone; and wherein the telephone receives the icon signal thus sent and displays a specific icon corresponding to the icon signal on the screen