Data circuit-terminating equipment: Difference between revisions

Revision as of 20:55, 11 March 2017

Revision as of 17:07, 5 July 2017

Line 1:

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

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"/> and '''data carrier equipment'''.{{cn|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. Interfacing equipment may be required to couple the data terminal equipment (DTE) into a transmission circuit or [[channel (communications)|channel]] and from a transmission circuit or channel into the DTE.