ANNOYING TELEPHONE PREVENTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an annoying telephone preventing system which automatically denies an incoming call when an annoying telephone call to which a callee does not like to take by taking up a handset and permitting the incoming call without fail when the call which the callee likes to take is made. SOLUTION: The annoying telephone preventing system using an information storage medium is provided with a telephone set having an information storage medium having a storage means storing telephone number data denying the call, a writing/reading means which writes/reads telephone number data stored in the storage means of the information storage medium, a comparison collation means comparing and collating whether telephone number data received through a telephone line matches the telephone number data which is read by the writing/reading means or not and a means denying the call when the comparison/ collation results of the comparison collation means match.