traffic+by+exchanges
21Highgate Wood Telephone Exchange — Highgate Wood is a suburb in North London that was chosen as the site of a trial for an electronic telephone exchange built by members from Joint Electronic Research Council (JERC), which was formed in 1956 and consisted of the British Post… …
22France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …
23Internet exchange point — An Internet exchange point (IX or IXP) is a physical infrastructure that allows different Internet service providers (ISPs) to exchange Internet traffic between their networks (autonomous systems) by means of mutual peering agreements, which… …
24Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
25Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …
26Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
27Mexico City — This article is about the capital of Mexico, coterminous with the Federal District. For other uses, see Mexico City (disambiguation). Mexico City   City   Ciudad de México City of Mexico …
28New York City — This article is about the city. For other uses, see New York City (disambiguation). New York, New York and NYC redirect here. For other uses, see New York, New York (disambiguation) and NYC (disambiguation). New York City …
29Public switched telephone network — The public switched telephone network (PSTN) is the network of the world s public circuit switched telephone networks. It consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites …
30History of the Internet — Main article: Internet The history of the Internet starts in the 1950s and 1960s with the development of computers. This began with point to point communication between mainframe computers and terminals, expanded to point to point connections… …
