Method of setting communication environment between smart card and mobile terminal using layered architecture of protocol stack

A storage medium for executing a method of setting a communication environment between a mobile terminal and a smart card using a layered architecture of a protocol stack, the storage medium capable of being read by a digital processor, and storing a program of commands executed by the digital processor, the program being implemented by types, with the program comprising the steps of:

• if the terminal provides power to the smart card, sending an answer-to-reset signal from the smart card to the mobile terminal;
• determining whether or not the received answer-to-reset signal complies with an answer-to-reset signal pattern required by the mobile terminal;
• if the received answer-to-reset signal complies with an answer-to-reset signal pattern required by the mobile terminal, analyzing the answer-to-reset signal transferred from the smart card to establish a communication environment very suitable for an application to be used at present;
• if the optimum communication environment is established, sending a command for requesting to open a logical channel, which is to be used in the application, to the smart card;
• opening the logical channel in response to the command for requesting to open the logical channel received from the mobile terminal, and sending a signal responding to the command to the mobile terminal;
• and
• opening the logical channel to be used in the application to ensure a communication channel between the smart card and the mobile terminal.