This overview of changes in the field of telecommunications development produced by satellite communications over the last 15 years focuses on applications of satellite systems for educational and health purposes in developing countries. Satellite communications development from 1974 to 1986 is identified as the first stage of telecommunications in developing countries, which was generally a trunking network restricted to large cities and beginning with lease or purchase of equipment from INTELSAT. Such projects in Algeria and Brazil are briefly described. A second stage of satellite communications development, which has rural service as an important part of the planning objectives, is also identified and the following topics are addressed in this context: (1) rural satellite communications systems in China and India; (2) new services and low-cost options available through INTELSAT; (3) major studies on the extension of telecommunications systems into rural and remote areas; (4) new digital compression techniques; and (5) cost/benefits of communications development. Guidelines for assessing the level of communications development are suggested. Attachments include lists of countries with INTELSAT leases and purchases; countries with dedicated communications satellite systems; and regional satellite systems. Also attached is a status report for Project SHARE which lists 14 projects together with their sponsors, the participating countries, the type of transmission, and content. (MES)