Patent ID: 7218728

Claim:
A telephone terminal device comprising: a temporary storage memory for temporarily storing an inputted telephone number; a plurality of telephone directories including a plurality of user selectable directories for storing user selected phone numbers, each of the telephone directories associated with at least one telephone directory memory for storing input telephone numbers; wherein a telephone number stored in the temporary storage memory is registered in one of said at least one telephone directory memory associated with one of said user selectable directories selected from the plurality of telephone directories after making a call; a transmitted telephone number record directory memory for storing a plurality of called telephone numbers; and a buffer directory memory whose data are erased automatically after passage of a predetermined time; wherein telephone numbers are registered in the transmitted telephone number record directory memory in the order of calling, and in the case where the number of the telephone numbers to be registered exceeds the number capable of being stored in the transmitted telephone number record directory memory, the telephone number of the oldest registered telephone number or a telephone number specified by the user is transferred from the transmitted telephone number record directory memory to the buffer directory memory.