Routing method and apparatus for establishing a communication link

The invention relates to a routing method and a routing device for establishing a communication link between a first communication terminal, in particular a vehicle is located within a first communication terminal, and one or more radio networks, in particular cellular networks. The first communication terminal is crosslinked with at least one second communication terminal via a radio networks different from the local communication network, wherein said first and each of the second communication terminals have their own wireless communication link to one of the radio networks. According to an evaluation criterion, the respective quality of service of these currently available wireless communication links is evaluated and then selected based at least one of the communication links rated for use by the first communication terminal. Depending on the selection of the first communication terminal is made via a corresponding signaling to use either its own communication link and / or a current via the local communication network and the communication link of one of the further communication terminals compound.