electronic private branch exchange system

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• Private branch exchange — A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public. PBXs are also referred to as …   Wikipedia

• exchange — An association of persons who participate in the business of buying or selling futures contracts or futures options. A forum or place where traders gather to buy or sell economic goods. With the advent of the computerized exchange, it is… …   Financial and business terms

• Exchange — The marketplace in which shares, options and futures on stocks, bonds, commodities and indices are traded. Principal US stock exchanges are: New York Stock Exchange ( NYSE), American Stock Exchange ( AMEX) and the National Association of… …   Financial and business terms

• Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …   Wikipedia

• Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… …   Wikipedia

• Mobile virtual private network — A mobile virtual private network (mobile VPN or mVPN) provides mobile devices with access to network resources and software applications on their home network, when they connect via other wireless or wired networks. Mobile VPNs are used in… …   Wikipedia

• Key telephone system — A key system or key telephone system is a multiline telephone system typically used in small office environments.Key systems are noted for their expandability and having individual line selection buttons for each connected phone line, however… …   Wikipedia

• Private currency — Not to be confused with alternative currency or complementary currency . A private currency is a currency issued by a private organization. It is often contrasted with fiat currency issued by governments or central banks. In many countries,… …   Wikipedia

• postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… …   Universalium

• Federal Reserve System — FRB and FED redirect here. For other uses, see FRB (disambiguation) and FED (disambiguation). Federal Reserve System …   Wikipedia

• Securities Exchange Act of 1934 — The Securities Exchange Act of 1934 is a law governing the secondary trading of securities (stocks, bonds, and debentures). The Act, 48 Stat. 881 (June 6, 1934), codified at usc|15|78a et seq., was a sweeping piece of legislation. The Act and… …   Wikipedia