This invention relates to novel diazabicyclic aryl derivatives which are found to be cholinergic ligands at the nicotinic acetylcholine receptors. A first passive network between one lead of the at least one symmetrical port of the filter and the input of the first transmitter or receiver short-circuits at the second frequency the port of the first transmitter or receiver. Their free plug-in ends on the other hand, which are surrounded by an elastic insulating jacket, can be elastically bent away in a transversal direction to their axial direction of insertion in order to compensate tolerances. The present invention finds particular advantage in providing audio data via a packet-switched network. Products capable of disrupting those interactions are useful in therapy, particularly in the treatment of inflammatory diseases.