Presently available telecommunication technology was surveyed to ascertain how it might be used to deliver public services. Applications are proposed in the fields of medicine, education, and social welfare. Specific designs are proposed for implementing the proposals, including applications of interactive television, cable television, computer data banks with telephone access, videotape and computer hookups, home use of interactive television and two-way institutional networks. Costs and hardware requirements are analyzed for videotape, teleprocessing, cable television and other systems. Problems of instructional constraint and implementation are discussed, and policy questions are identified. An appendix in chart form analyzes the cost and hardware requirements. (SK)