Английская Википедия:Interchange circuit
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Шаблон:Use dmy dates Шаблон:Short description Шаблон:One source In telecommunication, an interchange circuit is a circuit that facilitates the exchange of data and signaling information between data terminal equipment (DTE) and data circuit-terminating equipment (DCE).
An interchange circuit can carry many types of signals and provide many types of service features, such as control signals, timing signals, and common return functions.
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