Footnote:
Nach Informationen von SSRN wurde die ursprüngliche Fassung des Dokuments November 12, 2009 erstellt
Description:
We analyze competition among mobile operators with market influence. We consider that firms in this market are vertically differentiated as they own better network facilities and are often perceived as high quality firms. Even if, in general, firms cannot enjoy monopoly profits, it is shown that firms can use interconnection charges as an instrument of collusion. On the other hand, interconnection charges can be used by the regulator to achieve improvements in social welfare, but second best optima cannot be implemented