STORAGE METHOD FOR SPEECH HISTORY INFORMATION, PORTABLE INFORMATION TERMINAL EQUIPMENT ADOPTING THE STORAGE METHOD AND RADIO TELEPHONE SET

摘要

PROBLEM TO BE SOLVED: To provide the portable information terminal equipment in which speech history information such as charging information at a speech is managed efficiently depending on a plurality of purposes. SOLUTION: In a personal computer 1 where a subscriber terminal equipment and a public line network are connected by using a registration identification number issued from a communication enterprise to a subscriber and which is applied to a radio communication system in common use for a plurality of purposes, a memory 9 storing speech history information has a hierarchical structure to store the speech history information including charging information attended with a speech by each of a plurality of purposes, the speech history information by the purposes is stored in the hierarchical structure of the memory 9 and the speech history information including corresponding charging information on purpose is read from the hierarchical structure of the memory 9 and it is outputted to an LCD 10.