Patent ID: 6940858

Claim:
A method for establishing a route via a connection-oriented communication network with a plurality of network nodes connected to one another for emulating connectionless services, comprising the steps of: communicating a connection setup message including a destination address and a source address to a network node, said connection setup message proceeding from a source communication terminal device; entering a network address into the connection setup message via said network node, said network address being allocated to the network node in the communication network; forwarding the connection setup message via the network node that receives the connection setup message to at least one neighboring network node; forwarding the connection setup message to a destination communication terminal device upon reception of the connection setup message at a destination node, said destination node being identifiable with an assistance of the destination address; and returning a confirmation message to the source communication terminal device on said route, said route being defined by the source address, said route also being defined by the network node address, a switching information for messages to be subsequently transmitted between the source communication terminal and the destination communication terminal device being deposited in network nodes that are traversed, wherein the network node receiving the connection setup message forwards the connection setup message to one or more other network nodes only if the only one or more other network nodes each has a network node address not entered in the received connection setup message, the one or more other network nodes being connected to the network node receiving the connection setup message.