- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
A signal indicating acceptance of the call by the addressed user.
Industry:Telecommunications
A signal sent by receiving equipment to the sending station to indicate that the receiver is ready to accept transmission.
Industry:Telecommunications
A signal sent by the DTE to the DCE to request the establishment of a data connection.
Industry:Telecommunications
A signal sent from the called to the calling station, i.e., from the original data sink to the original data source. Note: Backward signals are usually sent via a backward channel and may consist of supervisory, acknowledgment, or control signals.
Industry:Telecommunications
A signal sent in the backward direction indicating that a call cannot be completed because of a time-out, a fault, or a condition that does not correspond to any other particular signal.
Industry:Telecommunications
A signal sent in the direction from the calling to the called station, i.e., from the original data source to the original data sink. Note: The forward signal is transmitted in the forward channel.
Industry:Telecommunications
A signal structuring technique employing automatic switching of the transmitted frequency. Selection of the frequency to be transmitted is typically made in a pseudo-random manner from a set of frequencies covering a band wider than the information bandwidth. The intended receiver would frequency-hop in synchronization with the code of the transmitter in order to retrieve the desired information. Note: In many cases, used as an electronic counter-countermeasure (ECCM) technique.
Industry:Telecommunications
A signal that can assume, at any given instant, one of three significant conditions, such as power level, phase position, pulse duration, or frequency. Note: Examples of ternary signals are (a) a pulse that can have a positive, zero, or negative voltage value at any given instant, (b) a sine wave that can assume phases of 0°, 120°, or 240° relative to a clock pulse, and (c) a carrier wave that can assume any one of three different frequencies depending on three different modulation signal significant conditions.
Industry:Telecommunications
A signal that carries a bit pattern sent by a data station to inform the other stations that they must not transmit. Note 1: In carrier-sense multiple access with collision detection (CSMA/CD) networks, the jam signal indicates that a collision has occurred. Note 2: In carrier-sense multiple access with collision avoidance (CSMA/CA) networks, the jam signal indicates that the sending station intends to transmit. Note 3: "Jam signal" should not be confused with "electronic jamming. "
Industry:Telecommunications
A signal that has a continuous nature rather than a pulsed or discrete nature. Note: Electrical or physical analogies, such as continuously varying voltages, frequencies, or phases, may be used as analog signals. 2. A nominally continuous electrical signal that varies in some direct correlation with another signal impressed on a transducer. Note: For example, an analog signal may vary in frequency, phase, or amplitude in response to changes in physical phenomena, such as sound, light, heat, position, or pressure.
Industry:Telecommunications
