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trunk switching system

См. также в других словарях:

  • Number 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… …   Wikipedia

  • Number One Crossbar Switching System — The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid 20th century. Its switch fabric topology was based on the earlier urban panel switch system, which,… …   Wikipedia

  • tandem switching system —    See tandem tie trunk network …   IT glossary of terms, acronyms and abbreviations

  • trunk-to-tie trunk connections —    Switching system s ability to supply an attendant with the option of offering an incoming trunk call to a tie trunk which ends in a different location …   IT glossary of terms, acronyms and abbreviations

  • System X (telephony) — System X was the name of the UK s first national digital telephone exchange system.HistorySystem X was developed by the UK Post Office (later to become British Telecom), GEC, Plessey, and Standard Telephones and Cables (STC), and first shown in… …   Wikipedia

  • trunk — trunkless, adj. /trungk/, n. 1. the main stem of a tree, as distinct from the branches and roots. 2. a large, sturdy box or chest for holding or transporting clothes, personal effects, or other articles. 3. a large compartment, usually in the… …   Universalium

  • trunk — [[t]trʌŋk[/t]] n. 1) bot the main stem of a tree, as distinct from the branches and roots 2) a large sturdy box or case for holding or transporting clothes, personal effects, etc 3) aum a large compartment, usu. in the rear of an automobile, for… …   From formal English to slang

  • Director telephone system — The Director System was a system which made it possible to call subscribers at other telephone exchanges without operator intervention in large multi exchange cities, and to have a mixture of automatic and manual exchanges within these cities. It …   Wikipedia

  • Grand Trunk Western Railroad — 1887 map of GTW predecessor railroads Reporting mark GTW Locale Michiga …   Wikipedia

  • multiple trunk groups —    Indicates that the switching system is capable of being equipped for more than one group of trunk circuits …   IT glossary of terms, acronyms and abbreviations

  • 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

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