The present invention relates to a home system, and more particularly to a home network system that is able to reduce of electric device by application of a modem that is capable of independently processing data. The present invention comprises a first electric device to transmit data including a home code input by the outside to a second electric device through a predetermined network; and a second electric device that comprises a modem by which it is connected to the first electric device through the network, and makes the modem to receive the data, after the initialization of the modem is finished, and read the home code from the data and establish it as its own home code.