| 摘要 |
PURPOSE:To simplify a position registration by adding a circuit to generate a PB tone signal for registering a position into a portable receiver. CONSTITUTION:When a receiver 1A, in which it is registered in a memory station 6A that the signal is in a service area A, is called from a subscriber telephone 2A, a signal transmitted from the subscriber telephone 2A enters the memory station 6A through an exchange 3A. Next, the signal is transferred to a signal generator 4A for calling and called from a radio base station 5A1 and 5A2. When a receiver 1C position-registered from a subscriber telephone 2C to a service area B is called, the transmission signal from a subscriber telephone enters through an exchange 3C into a memory station 6C of a service area C. The receiver knows from a memory station 6C that the position registration is executed to the service area B and transfers it to a signal generator 4B for calling the service area B. Then, a calling signal can call the receiver sent from radio base stations 5B1, 5B2 and 5B3 only with the service are B. |
