Interchange circuit
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In telecommunications, 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.
This article incorporates public domain material from . General Services Administration. Archived from on 22 January 2022.