diagram.dot

digraph x {
        rankdir=LR
        graph [bgcolor="#ffffff00"]
        node [shape=box]
        Dumpulse [shape=record, label="{Dumpulse | {last brake status | last ECU status | last radio status | last latitude high byte | last latitude middle byte | last latitude low byte | last longitude high byte | last longitude middle byte | last longitude low byte | last alarm status}}"];
        
        subgraph cluster_car {
                label="Car\nHigh-bandwidth controller-area network";
                Brakes -> Dumpulse [label="10 Hz\n8 bytes\nbrake status"];
                ECU -> Dumpulse [label="10 Hz\n8 bytes\nECU status"];
                Radio -> Dumpulse [label="100 mHz\n8 bytes\nradio status"];
                GPS -> Dumpulse [label="1 Hz\n48 bytes\nlatitude and longitude"];
                Alarm -> Dumpulse [label="100 mHz\n8 bytes\nalarm status"];
        }
        NMS -> Dumpulse [label="1 mHz\n8 byte status request"];
        Dumpulse -> NMS [label="260 bytes over\nintermittent 8kbps\nMobitex link"];
}