International mobile roaming cartel agreements prompted the EU to intervene, firstly encompassing competition law measures by a cartel exemption, then ini-tiating several competition proceedings based on the accusation of abuse of a dominant market position, and finally applying price...

Die Suche nach einer konsistenten regulatorischen Behandlung von Mobilfunkund Festnetzen sollte nicht in der Einführung einer sektorspezifischen Regulierung von Mobilfunknetzen, sondern vielmehr im Abbau der sektorspezifischen Regulierung der Festnetze bestehen. Stabile Marktmacht mittels des...

Network services can be provided efficiently in competitive markets, if nondiscriminatory access to the complementary infrastructure capacities is guaranteed. The sector-symmetric application of the disaggregated regulatory approach to railways and telecommunications reveals the different role...

This paper examines the topic of unbundled access to the local loop in areas which show characteristics of non-contestable natural monopolies outside the large cities. Under the heading "local loop unbundling" three variants are discussed, full unbundling, line sharing, and bitstream access. An...