Often, fi xed-line incumbents also own the largest mobile network. We consider the effect of this joint ownership on market outcomes. Our model predicts that while fixed-to-mobile call prices to the integrated mobile network are more efficient than under separation, those to rival mobile...

We analyze the impact of mandatory access on the infrastructure iinvestments of two competing communications networks, and show that for low (high) access charges firms wait (preempt each other). Contrary to previous results, under preemption a higher access charge can delay first investment....

We propose a novel approach to the evaluation of new network technologies that combines an engineering cost model with a differentiated multi-player oligopoly model subject to wholesale access regulation. It is based on Hoernig et al. (2010), 1 which examines the cost differentials and...