01948nam a2200337Ia 4500 ebr10071945 CaPaEBR m u cr cn||||||||| 080919s1989 dcu sb 000 0 eng d CaPaEBR CaPaEBR (OCoLC)58673612 TK5102.5 .N31 1989eb National Research Council (U.S.). Committee on Review of Switching, Synchronization and Network Control in National Security Telecommunications. Growing vulnerability of the public switched networks [electronic resource] : implications for national security emergency preparedness : a report / prepared by the Committee on Review of Switching, Synchronization and Network Control in National Security Telecommunications, Board on Telecommunications and Computer Applications, Commission on Engineering and Technical Systems, National Research Council. Washington, D.C. : National Academy Press, 1989. xi, 119 p. Committee chairman: John C. McDonald. Includes bibliographical references. Electronic reproduction. Palo Alto, Calif. : ebrary, 2013. Available via World Wide Web. Access may be limited to ebrary affiliated libraries. Emergency communication systems United States. National security United States. Telecommunication United States Switching systems. Telecommunication systems. Electronic books. local McDonald, John C., 1936- National Research Council (U.S.). Board on Telecommunications and Computer Applications. National Research Council (U.S.). Commission on Engineering and Technical Systems. ebrary, Inc. http://site.ebrary.com/lib/rucke/Doc?id=10071945 An electronic book accessible through the World Wide Web; click to view 33547 33547