Patent ID: 8281357

Claim:
A network system comprising: a plurality of terminal apparatuses; a network home appliance controlled by the terminal apparatuses; a service server that provides the terminal apparatuses with a service for controlling the network home appliance through a network; and a direct access management server that performs exchange of information to directly access the network home appliance through the network, wherein the network home appliance includes: a first storing unit that stores a plurality of management IDs, each one of the management IDs representing a combination of a terminal apparatus and a service; and for each management ID, a plurality of message transmission settings, each of the message transmission settings indicating whether a message must be transmitted to the terminal apparatus corresponding to the respective management ID when a corresponding one of different events occurs in the network home appliance; and a message transmitting unit that judges, when an event of the different events occurs, whether a message concerning the event must be transmitted to the terminal apparatus based on the message transmission setting stored in the first storing unit and transmits, when transmission is necessary, the message including the management ID corresponding to the message transmission setting, the direct access management server includes a first message-transmission processing unit that specifies the service server based on the management ID included in the message received from the network home appliance and transmits the message to the service server, and the service server includes a second message-transmission processing unit that specifies a destination of a terminal apparatus based on the management ID included in the message received from the direct access management server and transmits the message to the destination.