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Data terminal equipment
Communications system equipment / From Wikipedia, the free encyclopedia
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Data terminal equipment (DTE) is an end instrument that converts user information into signals or reconverts received signals. It is also called data processing terminal equipment[1] or tail circuit.[citation needed] A DTE device communicates with the data circuit-terminating equipment (DCE), such as a modem. The DTE/DCE classification was introduced by IBM.
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A DTE is the functional unit of a data station (station, terminal)[1] that serves as a data source or a data sink and provides for the data communication control function to be performed in accordance with the link protocol.
Usually, the DTE device is the terminal (or a computer emulating a terminal), and the DCE is a modem or another carrier-owned device. The data terminal equipment may be a single piece of equipment or an interconnected subsystem of multiple pieces of equipment that perform all the required functions necessary to permit users to communicate. A user interacts with the DTE (e.g. through a human-machine interface), or the DTE may be the user.