timer clock zeit the route planning system rpe calculates the traveling time to be expected the forecast of the traveling time for the individual route sections is dependent on the current clock time especially when using public transport such as during rush hour the route planning system rpe is also connected to the mobile radio terminal mg 1 by the service control point scp in order to forward the information found in the text that follows the configuration of a navigation service is explained in greater detail the user will first trigger the service request by dialing a service code by using the input device ee 1 of the mobile radio terminal mg 1 he will then be requested under menu control to specify his destination in a certain format location data of the user are determined via the global positioning satellite receiver sbe 1 integrated in the mobile radio terminal mg 1 and transmitted by the transmitter tx 1 simultaneously with the destination input via the mobile radio terminal mg 1 through the service switching points to the fixed structures of the intelligent network in the service switching point detects the request of an in service and forwards the input data to the corresponding service control point at which the actual service is running the input data the destination input and the location data of the user are transferred to the route planning system rpe the route planning system rpe transfers the inquiry data to the navigation database nd the navigation database nd which is connected to other databases od uses the destination input and the location data and the current traffic situation to generate the shortest the fastest and the most inexpensive connection to the desired.