A controller of a private base station receives data on a travel time depending on a propagation delay between a private base station and a user terminal. A selector selects one of first and second functionalities based on a control setting. The method comprises moving at least a first valve away from a neutral position of the first valve before the engine is rotated by said starting apparatus; and moving at least a second valve away from a neutral position of the second valve after the engine is rotated by said starting apparatus. Other file write access commands are, however, passed onto a device driver for the storage medium and are implemented. The dedicated device decrypts the twice-encrypted streamed content by using its unique information and decryption key as well as randomly selected information received from the closed network during the closed network communication session and through the closed connection.