# Interchange circuit

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In [telecommunications](/source/Telecommunications), an **interchange circuit** is a [circuit](/source/Telecommunication_circuit) that facilitates the exchange of [data](/source/Data) and [signaling](/source/Signaling_(telecommunications)) information between data [terminal equipment](/source/Terminal_equipment) ([DTE](/source/Data_terminal_equipment)) and data circuit-terminating equipment ([DCE](/source/Data_circuit-terminating_equipment)).

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](/source/Common_return) functions.

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Adapted from the Wikipedia article [Interchange circuit](https://en.wikipedia.org/wiki/Interchange_circuit) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Interchange_circuit?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.