| 摘要 |
PURPOSE:To enable a portable telephone set to make or receive a call wherever it is located by blocking the sending of information when the frequency of registratio change of designated information exceeds a prescribed value attended with the movement of the portable telephone set. CONSTITUTION:The system is constituted so that a portable telephone set can respond to a call from the class (i) exchange to be registered and a function to receive the (i+n) class broad band call signal is provided via the (i+n)th kind (n=1, 2...) exchange station located at a high-order hierarchy when no reception is given at the registration and the transmission of the information is blocked when the frequency of registration of designated information exceeds a prescribed value attended with the movement. Thus, each of plural portable telephone sets is connected to the portable telephone system having a function registering a home area of its usual residence and designation information assigned to indicate each portable telephone set distinguishedly to the i-th and (i+1)th kind of exchange managing the home area and the service area where the portable telephone set is located at present. |
