Abstract: A method and a telecommunication network for establishing a telecommunication link between a first and a second subscriber (A, BK) in a telecommunication network, in particular between two devices that are suitable for communicating, with addresses being assignable to the subscribers (A, BK). To provide a reliable telecommunication link between subscribers (A, BK) in the telecommunication network, a switching unit (TR) assigns to the second subscriber (BK) a predetermined number of addresses before establishing the link. The switching unit (TR) then establishes link, and the second subscriber (BK) uses at least one of the assigned addresses when the link is established.

Abstract: A method for maintaining and/or qualitatively improving a communication path in a relay system, in particular in a radio network, wherein information is transmissible between two devices (A0, An) via one or more additional devices (A1, . . . An−1) along a thus-formed communication path, and wherein at least one leg of the communication path can be replaced with a substitution path as a function of at least one predeterminable parameter, or be used at least at times simultaneously with a substitution path. The method permits maintaining a link quality at a high level, even when transmission conditions vary in the course of time.