telegraphy general exchange

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• Telegraphy — (from the Greek words (τηλε) = far and (γραφειν) = write) is the long distance transmission of written messages without physical transport of letters. Radiotelegraphy or wireless telegraphy transmits messages using radio. Telegraphy includes… …   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

• Competitive local exchange carrier — A competitive local exchange carrier (CLEC), in the United States, is a telecommunications provider company (sometimes called a carrier ) competing with other, already established carriers (generally the incumbent local exchange carrier (ILEC)).… …   Wikipedia

• Melbourne Telephone Exchange Company — The Melbourne Telephone Exchange Company operated Australia s first telephone exchange. The exchange was located at 367 Collins Street. It commenced operation in August 1880. H.B.Moore was the first manager. W.H. Masters and T.T. Draper were the… …   Wikipedia

• Multiplexing — General multiplex scheme: the ν input lines channels are multiplexed into a single fast line. The demultiplexer receives the multiplexed data stream and extracts the original channels to be transferred …   Wikipedia

• List of Statutory Instruments of the United Kingdom, 1996 — This is a complete list of all 2071 Statutory Instruments published in the United Kingdom in the year 1996. NOTOC 1 100* Insurance Companies (Pension Business)(Transitional Provisions) (Amendment) Regulations 1996 S.I. 1996/1 * Sea Fishing… …   Wikipedia

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• Telephone numbers in the United Kingdom — +44 redirects here. For the band, see +44 (band). United Kingdom telephone numbers Location of United Kingdom (dark green) Location Country United Kingdom Continent …   Wikipedia

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