A control apparatus includes: a network interface configured to perform transmission and reception of a signal; a controller coupled to the network interface, the controller configured to execute transfer processing that includes transferring service class information indicating a service class for controlling a remote device, execute setting processing that includes setting the service class to transmission of an operation signal for controlling the remote device, and execute control processing that includes controlling transfer of the operation signal via the network interface by using the service class. The control processing is configured to control transfer of the operation signal by using the service class that is set to the operation signal and information that is associated with the operation signal. The information relates to a first attribute value different from a value of at least one attribute associated with the service class.