The present document defines an intermediate universal Geographical Area Description which subscriber applications or GSM services can use and the network can convert into an equivalent radio coverage map. For GSM services which involve the use of an area, it can be assumed that in the majority of cases the Service Requester will be forbidden access to data on the radio coverage map of a particular PLMN and that the Service Requester will not have direct access to network entities (e.g. BSC/BTS). The interpretation by the PLMN operator of the geographical area in terms of cells actually used, cells that are partly within the given area and all other technical and quality of service aspects are out of the scope of the present document.