CARD USAGE COMMUNICATING METHOD FOR COMMUNICATION TERMINAL, ITS SYSTEM DEVICE AND RECORDING MEDIUM STORING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a card use method for communication terminal, which simultaneously communicates in parallel a call and a sound guidance in addition to card writing information through the use of only same communication line among plural communication lines connecting a service center and a communication terminal where a communication terminal card is set and to provide a system device and a recording medium recording a program. SOLUTION: A system is constituted of a public telephone set 21 where a public telephone card 30 is set and a service center 1 connected by communication lines 10 and 28. The public telephone set 21 having a call circuit part 24 and a data processing part 25 and the service center 1 having a total automatic operation part 11, a DB part 6, a data reception part 5 and a data transmission part 7 have sound/ data separation parts 3 and 23 separating sound and data, which are multiplex- synthesized in the case of reception, and synthesis parts 9 and 26 which multiplex- synthesize sound and data in the case of transmission, in common. The public telephone set card 30 has a reading/writing/collation part 32 reading/writing/collating input/output data in a data storage part 34 via the data processing part 25 of the public telephone set 21 against one or more data storage area part 34.