A paging system

Claim 1

A paging system comprising, a predetermined number of radio paging terminals each having a subscriber file in which subscriber numbers, pager identification numbers, service zone informations and frequency informations are stored, each of said radio paging terminals produces a pager identification number, a service zone signal, and a frequency signal respectively corresponding to a subscriber number when each of said radio paging terminals finds said subscriber number to be registered in said subscriber file, a paging processor in which a queing of pager identification numbers received from said predetermined number of said radio paging terminals is performed in accordance with service zone signals further received therefrom so that said pager identification numbers are allocated to respective designated service zones, said pager identification numbers in each of said respective designated service zones are further allocated to a predetermined number of time slots in accordance with frequency signals still further received from said predetermined number of said radio paging terminals, said pager identification numbers thus allocated in regard to said service zone and frequency signals are encoded to produce pager identification number signals, and channel designating signals are added to said pager identification number signals in accordance with said frequency signals, a predetermined number of expanders each dividing said pager identification number signals having said channel identification signals in each of paging service zones into a predetermined number of said pager identification number signals, and a predetermined number of transmitters which are provided in said each of said paging service zones, each of said predetermined number of said transmitters radiating one of said pager identification number signals in a frequency designated by one of said channel designating signals, wherein said predetermined number of said time slots are synchronized among said paging service zones, and at least two of said pager identification number signals are radiated with different frequencies in two adjacent paging service zones at one of said time slots.