Revolutionary technological and institutional changes, introduced since mid-seventies, are drastically altering the quiet functioning of international telecommunications markets, traditionally characterized by a strong multilateral oligopoly. In such multilateral oligopoly firms had little scope and opportunity for any form of international growth. Since the early eighties the scope for international growth of telecommunications carriers is emerging as a critical issue in international telecommunications. The economics of multinational firms and international trade make it possible to assess the role of technology gaps in the modernization process, international telecommunications tariff asymmetries and global outsourcing as the determinants of multinational growth of telecommunications carriers and their international strategies.