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Number Five Crossbar Switching System

Код 3361379

  • ISBN: 978-5-5082-4435-4

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High Quality Content by WIKIPEDIA articles! 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 variants were used as combined class 4/5 in rural areas and as a TWX switch.

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ISBN: 978-5-5082-4435-4

Книга находится в категориях

Общая и теоретическая социология ГОСТы, стандарты

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