Four-wire Circuit
Telecommunication, Telecommunication circuit, Telephone exchange, Two-wire circuit
978-620-0-28780-9
6200287805
136
2012-01-10
45.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In telecommunication, a four-wire circuit is a two-way circuit using two paths so arranged that the respective signals are transmitted in one direction only by one path and in the other direction by the other path. Late in the 20th century, almost all connections between telephone exchanges were four-wire circuits, while conventional phone lines into residences and businesses were two-wire circuits.
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Electronics, electro-technology, communications technology
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