An econometric model is used to examine market power in US international telephone markets. Lerner index estimates suggest AT&T's collection rate-cost margin was between 12% and 24% during 1991 to 1995. Although Lerner estimates imply deadweight welfare losses of up to US $261 million per annum,...

An econometric model is estimated to identify determinants of trade imbalance in international message telephone services markets. Results indicate that asymmetric market structure is important in explaining bilateral market imbalances for high income country pairs. For low and high income...