TRANSACTIONAL SYSTEM INCLUDING ONE OR MORE BASE EXCHANGER CENTRALS AND A NUMBER OF DISTRIBUTED TERMINAL STATIONS THAT CAN BE COUPLED TO ANY BASE EXCHANGER CENTRAL THROUGH A SUITABLE NETWORK SYSTEM, CONCENTRATOR AND TERMINAL STATION

摘要

COMMUNICATIONS SYSTEM THAT CONSISTS OF TERMINALS THAT CAN COMMUNICATE WITH A MAIN CENTRAL. TO IMPROVE COMMUNICATION, THERE ARE SOME CONCENTRATORS BETWEEN THE CENTRAL AND THE TERMINALS. CERTAIN FUNCTIONS MAY BE INCORPORATED IN THE CONCENTRATORS, AVOIDING THE NEED FOR THEY TO BE INCLUDED IN THE TERMINAL. THE CONCENTRATORS, AND THE TERMINALS, HAVE A SAFE TO CARRY OUT THE CODING / DECODING OF THE DATA TRANSPORT. AT THE TERMINAL, THIS BOX IS A SMART CARD THAT ACTUATES AS THE OPERATOR'S IDENTIFICATION ELEMENT. A CUSTOMER CAN IDENTIFY HIMSELF BY A USER IDENTIFICATION ELEMENT, SUCH AS A MAGNETIC BAND CARD OR ANOTHER SMART CARD. THE CODING MECHANISM IS DES.