telephone circuit loss

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• Sound-powered telephone — A sound powered telephone is a communication device that allows users to talk to each other with the use of a handset, similar to a conventional telephone, but without the use of external power. This technology has been used for at least five… …   Wikipedia

• Public 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 …   Wikipedia

• Via Net Loss — is a network architecture for telephone calls using circuit switching systems deployed in the 1950s with Direct Distance Dialing and used until the late 1980s. The purpose of the VNL plan and five level long distance switching hierarchy was to… …   Wikipedia

• Federal telephone excise tax — The federal telephone excise tax is a statutory federal excise tax imposed under the Internal Revenue Code in the United States under usc|26|4251 on amounts paid for certain communications services. The tax was to be imposed on the person paying… …   Wikipedia

• затухание в телефонной цепи — Суммарные потери на эталонной частоте в 1020 Гц между входом и выходом цепи. Данная величина будет включать любое затухание в соответствующем оконечном оборудовании коммутаторов. (МСЭ Т P.10/ G.100). [http://www.iks… …   Справочник технического переводчика

• ГОСТ 19472-88: Система автоматизированной телефонной связи общегосударственная. Термины и определения — Терминология ГОСТ 19472 88: Система автоматизированной телефонной связи общегосударственная. Термины и определения оригинал документа: Circuit group telephone network traffic capacity 68 Определения термина из разных документов: Circuit group… …   Словарь-справочник терминов нормативно-технической документации

• GTD-5 EAX — The GTD 5 EAX (General Telephone Digital Number 5 Electronic Automatic Exchange) is the Class 5 telephone switch developed by GTE Automatic Electric Laboratories. This digital central office telephone circuit switching system is used in the… …   Wikipedia

• GPO telephones — The United Kingdom s General Post Office (GPO) had a number of telephones that were provided by them for connection to their exchanges. Until 1982 the GPO had a monopoly on the provision of all telephones within the UK and so the range was… …   Wikipedia

• Loading coil — In electronics, a loading coil or load coil is a coil (inductor) that does not provide coupling to any other circuit, but is inserted in a circuit to increase its inductance. The need was discovered by Oliver Heaviside in studying the… …   Wikipedia

• CompuServe — Type Subsidiary of AOL Industry Internet communications Founded 1969 Headquarters Col …   Wikipedia

• Pulse-code modulation — PCM redirects here. For other uses, see PCM (disambiguation). Pulse code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form for digital audio in computers and various Blu ray, Compact Disc and …   Wikipedia