Method for managing a status request transmitted from a managing device to an interface device through a network

A method for managing status request information transmitted from a managing device to an interface device through a network, the interface device being installed in a terminal device, the method comprising the steps of:

• requesting, by the interface device to the terminal device, a lead information of the terminal device;
• transmitting, by the terminal device, the lead information to the interface device;
• storing the lead information in a memory of the interface device;
• transmitting, by the managing device, the status request information to the interface device;
• receiving, by the interface device, the status request information including a node information transmitted from the managing device;
• comparing the node information with the lead information stored in the memory so as to judge whether the status request information is to be processed in the interface device or in the terminal device;
• processing the status request information at the interface device if the status request information is judged to be processed in the interface device;
• transmitting a first processing information, which is a process result by the processing step at the interface device, to the managing device through the network;
• transferring the status request information to the terminal device if the status request information is judged to be processed in the terminal device;
• processing the status request information at the terminal device if the status request information is judged to be processed in the terminal device;
• and
• transmitting a second processing information, which is a process result by the processing step at the terminal device, to the managing device through the interface device and the network.