In one aspect, a database in which target subscribers of different subscriber classes that can be reached via a communications system are allocated, and one respective marketer is assigned to each of the subscriber classes. When the communications system establishes a first communications relation between a first subscriber and a target subscriber while using a destination address given by the first subscriber, the subscriber class of the target subscriber is determined based on the destination address. The determination of the subscriber class results in the establishment of a second communications relation between the first subscriber and a marketer assigned to the determined subscriber class.