Electric power system

An electric power control system comprising:

• a communication apparatus;
• a server operative to process a service request received from the communication apparatus and transmit a response to the service request to the communication apparatus;
• and
• a client operative to transmit the service request to the communication apparatus and receive the response to the service request processed by the server via the communication apparatus,
• wherein the communication apparatus comprises:
• a communication unit operative to communicate with the client and server included in the electric power system to relay the service request received from the client to the server and relay the response to the service request received from the server to the is client;
• a comparison/determination unit operative to compare a timeout time taken for the client to wait for the response to the service request with a processing time taken for the server to process the service request;
• and
• a controller operative to control the communication unit and the comparison/determination unit and to announce to the client that the processing time is longer than the timeout time when the processing time is longer than the timeout time.