data carrier detect
See DCD.

Dictionary of telecommunications. . 2000.

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  • Data Carrier Detect — Data Carrier Detect, abbreviated as DCD, or alternately Carrier Detect abbreviated as CD, is a control signal present inside an RS 232 serial communications cable that goes between a computer and another device, such as a modem. This signal is a… …   Wikipedia

  • Data Carrier Detect —    Abbreviated DCD. A hardware signal defined by the RS 232 C standard that indicates that the device, usually a modem, is online and ready for transmission …   Dictionary of networking

  • carrier detect —    Abbreviated CD. An electrical signal sent from a modem to the attached computer to indicate that the modem is online.    See also Data Carrier Detect; RS 232 C …   Dictionary of networking

  • carrier detect threshold — A way of measuring how well a modem can detect valid data over noisy phone lines. It is measured in negative dBm s (decibel milliwatts). The bigger the number (the more negative) the better. For example, 45 dBm is better than 40 dBm. Same as… …   Dictionary of telecommunications

  • Data Terminal Ready — Data Terminal Ready, abbreviated as DTR, is a control signal present inside an RS 232 serial communications cable that goes between a computer and another device, such as a modem. This is a one way high low signal going from the computer to the… …   Wikipedia

  • Data Terminal Ready — Steckerleiste Der Begriff EIA 232, ursprünglich RS 232, bezeichnet einen Standard für eine serielle Schnittstelle, die in den frühen 1960ern von einem US amerikanischen Standardisierungskomitee (heute EIA – Electronic Industries Alliance)… …   Deutsch Wikipedia

  • Carrier sense multiple access with collision detection — (CSMA/CD), in computer networking, is a network control protocol in which *a carrier sensing scheme is used. *a transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam… …   Wikipedia

  • Carrier sense multiple access — (CSMA) is a probabilistic Media Access Control (MAC) protocol in which a node verifies the absence of other traffic before transmitting on a shared physical medium, such as an electrical bus, or a band of electromagnetic spectrum. Carrier Sense… …   Wikipedia

  • Carrier Ethernet — Carrier Ethernet: the extensions to Ethernet necessary to enable telecommunications network providers ( common carriers in US industry jargon) to provide Ethernet services to customers and to utilise Ethernet technology in their… …   Wikipedia

  • Command and Data modes (modem) — Command and Data modes refer to the two modes in which a computer modem may operate. These modes are defined in the Hayes command set, which is the de facto standard for all modems. These modes exist because there is only one channel of… …   Wikipedia

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