PREPAID CARD FOR TELEPHONE CONNECTION, CREDIT CARD FOR TELEPHONE CONNECTION, AND TELEPHONE SET USING THESE CARDS

摘要

PROBLEM TO BE SOLVED: To easily select a route being the least in telephone charge by storing at least the access code to a provider that performs connection service to a leased line together with use units whose numericals are changed in accordance with use charge of a telephone set. SOLUTION: A manufacturing code 1, number of calls 2 that are subtracted in accordance with the use charge of a telephone set and a provide identification number 3 that is dialed before the telephone number of the other party as an access code to a provider that performs access service to a leased line are stored on a prepaid card pc1 (a). A dial to which the number 3 is automatically attached becomes available at the time of calling to an area where communication charge becomes the least if it is called via the provider by using the card pc1. A prepaid card pc2 stores connection service of the Internet, and a prepaid card pc3 stores access codes 4 and 5 which are for using electronic mail service (b and c).