Data circuit-terminating equipment: Difference between revisions

Revision as of 23:08, 20 October 2023

Revision as of 19:59, 4 September 2024

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{{Short description|Communications system component}}

[[File:Terminaladapter X.21.jpg|thumb|Terminal adapter for X.21]]

[[File:RS-232 POTS DTE DCE.svg|thumb|Two ''data stations'' (''terminals'', ''stations'') each comprising a DCE and a DTE, connected via a network.]]

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A '''data circuit-terminating equipment'''<ref name="TIA_1997_232F"/> ('''DCE''') is a device that sits between the [[data terminal equipment]] (DTE) and a [[data transmission circuit]]. It is also called '''data communication(s) equipment'''<ref name="EIA_1969_RS232C"/><ref name="DIN_44302"/><ref name="MIL-STD-188-100"/> and '''data carrier equipment'''.{{citation needed|date=May 2013|reason=The definition of DCE I have seen most often over the decades is Data Communication Equipment. I would like to see more *historic* references for the various definitions.}} Usually, the DTE device is the [[Terminal (telecommunication)|terminal]] (or [[computer]]), and the DCE is a [[modem]].

In a ''data station'', the DCE performs functions such as [[Signalling (telecommunication)|signal]] conversion, [[Channel coding|coding]], and line clocking and may be a part of the DTE or intermediate equipment.<ref name="DIN_44302"/> Interfacing equipment may be required to couple the DTE into a transmission circuit or [[Communication channel|channel]] and from a transmission circuit or channel into the DTE.

==Usage==