Introduction: Telecommunications networks in transition: a 21st century perspective (G. Pogorel). New Telecommunication Services. Business demand for value added services in Europe (M.-W. Stoetzer). Sharing in telematic network organizations: opportunities and entry barriers (E. Bolisani, G. Gottardi, E. Scarso). The impact of EDI-based quick response systems on logistics systems (J. Kokuryo). The making of a Pan-European network as a path-dependency process: the case of GSM versus IBC (Integrated Broadband Communication) Network (G. Cattaneo). Telecommunication strategies: incremental change in Europe (R. Mansell, M. Jenkins). Market support systems: theory and practice (C.U. Ciborra). Technological Changes and Standards. Percolation structures, Markov random fields and the economics of EDI standards diffusion (P.A. David, D. Foray). Economic and political factors in telecommunication standards setting in the US and Japan: the case of BISDN (T. Curtis, H. Oniki). Centralization versus decentralization of data communications standards (W.E. Steinmueller). Establishing standards for Telepoint: problems of fragmentation and commitment (P. Grindley, S. Toker). A monopolist's incentive to invite competitors to enter in telecommunications services (N. Economides). Reaching compromise in standards setting institutions (P. Swann). Policies and Operators Strategies. Inter-firm agreements in telecommunications: elements of an analytical framework (P. Llerena, S. Wolff). AT&T, BT, and NTT: vision, strategy, corporate competence, path-dependence, and the role of R&D (M. Fransman). Globalization of telecommunications operators under conditions of asymmetric national regulation (J.M. Bauer). New strategies for changing structures: the complex nature of Eastern European telecommunication systems (A.L. Thimm). Index.