Working paper on the effects of access regulation on investment and the implications for optimal access-price regulation

This working paper gives an overview of the theoretical literature and empirical studies on the effects of access regulation on investments in the telecommunications markets. Conclusions are drawn about the optimal access pricing policy in two scenarios: one in which the regulator aims for maximization of social welfare in the short run (static efficiency), and one where the regulator aims for maximization of social welfare in the long run by promoting investments and innovation (dynamic efficiency).