Paging system with message numbering prior to transmission

摘要

A paging system repeatedly broadcast each message and associates a sequential message number with each paging message. The message number in each message serves two functions. First, the message number is used to determine if the same message was previously received and second, when a subscriber reviews the messages, missing messages can be readily detected by skipped message numbers. All messages that are transmitted are also stored at a clearinghouse and a subscriber can telephone the clearinghouse facility and request that particular missed messages be retransmitted or given by voice response over the telephone.