Presently the discussion about the ISO Reference Model (RM, [1],[2]) is hardly un- derstandable for insiders - there is no chance for outsiders to find out from the documents, what is going on. The two main reasons for this situation seem to be that we are concerned with an area in which the semantical notions (it is based on) are not yet really understood and which must span the huge distance between communica- tions oriented towards telephone lines and communications oriented towards human beings. One way out of this unsatisfactory situation might be to try to immediately improve the...