| 摘要 |
In a system wherein a plurality of communication terminals are connected with one another, or the mobile communication terminals and fixed communication terminals are connected with one another by a switchboard through a base station, the present invention discloses a system which registrates a call area of each mobile communication terminal to the switchboard through the base station. The system includes the switchboard (300), a plurality of base stations (200, 210) connected to this switchboard (300) and mobile communication terminals (100, 110) connected wireless to the base stations (200, 210), respectively. The mobile communication terminals (100, 110) registrate their own call area positions to the switchboard (300) through the base stations (200, 210), respectively. A registration procedure for registering the call area includes a first position registration sequence and a second position registration sequence. The first position registration sequence includes a procedure for authenticating whether or not the mobile communication terminal (100, 110) sending the position registration request to the switchboard (300) is the terminal the use of which is permitted in this system. The second position registration sequence is executed when the mobile communication terminal (100, 110) has already made the position registration to the switchboard (300) in this system. |
