A combined service brake and the stored-energy brake cylinder is provided, in which a ventilation valve which forms or shuts off a flow connection between the spring chamber and the service brake chamber of the brake cylinder ensures that disruptive noise is avoided while also preventing loss of air volume for building up the service brake force. A pipeline may be provided by connecting multiple pipeline sections together as an integrated pipeline where each section has an associated ICCP system. The feedback circuit generates a feedback voltage corresponding to an output voltage applied to the secondary coil. While receiving the group of packets, the interface device determines whether any packets are late. A redirect operation is performed according to the uniform resource locator data to obtain a corresponding network service.