Using the tools of structural and network analysis developed by Ronald R. Burt and others, this study investigated the communication patterns among corporate officers of American Telephone and Telegraph Corporation (A.T. & T.) and United Telecommunications Corporation (Sprint). Data on contacts, efficiency, network density, and constraint indicate that opportunities for power and constraint have remained relatively stable at United Telecommunications between 1980 and 1990. A. A.T. & T., on the other hand, was more affected by the drastic changes in the telecommunication industry. The span of A.T. & T. has grown smaller and the potential for constraining relations among A. T. & T. and financial institutions has increased during the period 1980 and 1990.