Radio paging system for selective transmission without a separate address for each paging area

Claim 1

Radio paging system comprising: a plurality of transmit stations each of which transmits radio signals containing paging signals to its own respective paging area in response to calls that have arrived from a network; and one or more pagers which receive the radio signals respectively transmitted by said plurality of transmit stations, and each of which produces a paging signal output when it detects that its own address is contained in said paging signals; wherein an area identification number is assigned to each said paging area; each of the pagers is set to have one paging area as its local area, and is assigned a unique address in that local area; each of the transmit stations contains a means which, when it pages a pager which has the paging area of the transmit station as its local area, transmits the address of that pager, and which, when it pages a pager which has another paging area as its local area, transmits the area identification number of the paging area which is the local area of that pager and the address of that pager; and each pager contains a means which, when it receives a paging signal in its own local area, detects that its own address is contained in that paging signal without the accompanying area identification number, and when it receives a paging signal in another paging area, detects that the area identification number of its own local area and its own address are both contained in that paging signal.