glossary of telecommunication terms National communications System U.S Technology & Standards Division. United States General Services Administration. Information Technology Section. text Rockville, Md Government Institutes 1997 monographic eng 1 v. (various pagings) NationalCommunications System, Technology & Standards Division ; General Service Administration, Information Technology Section. "The use of this standard by all FederalDepartments and Agencies is mandatory." Telecommunication United States Dictionaries 0865875804 UCZ 980608 20160527195842.0 216827