Additional information transmission method for communications system has additional information inserted in connection between subscribers during establishment of communications context

摘要

The additional information transmission method has a calling subscriber (A) of the communications system used for establishing the communications context for the called subscriber (B), with the additional information, e.g. an advertisment, inserted in the connection during the establishment of the communications context. Also included are Independent claims for the following: (A) an exchange device for a communications system; (B) a communications system; (C) a subscriber station for a communications system; (D) a control program for a subscriber station of a communications system.