- 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.
The ratio of the amplitude of the desired signal to the amplitude of noise signals at a given point in time. Note 1: SNR is expressed as 20 times the logarithm of the amplitude ratio, or 10 times the logarithm of the power ratio. Note 2: SNR is usually expressed in dB and in terms of peak values for impulse noise and root-mean-square values for random noise. In defining or specifying the SNR, both the signal and noise should be characterized, e.g., peak-signal-to-peak-noise ratio, in order to avoid ambiguity.
Industry:Telecommunications
The ratio of successfully completed calls to the total number of attempted calls. Note: This ratio is typically expressed as either a percentage or a decimal fraction.
Industry:Telecommunications
The ratio of reflected power to incident power, generally expressed in dB or percent.
Industry:Telecommunications
The ratio of power radiated by a substance to the power radiated by a blackbody at the same temperature.
Industry:Telecommunications
The ratio of output current, voltage, or power to input current, voltage, or power, respectively. Note 1: Gain is usually expressed in dB. Note 2: If the ratio is less than unity, the gain, expressed in dB, will be negative, in which case there is a loss between input and output.
Industry:Telecommunications
The ratio of disengagement attempts that result in disengagement denial to the total disengagement attempts counted during a measurement period.
Industry:Telecommunications
The ratio of cable conductor or cable pair kilometers in use to total cable conductor or cable pair kilometers available in the plant, e.g., the ratio of revenue producing cable pair kilometers in use to total cable pair kilometers in plant.
Industry:Telecommunications
The ratio of an optical detector's electrical output to its optical input, as a function of optical wavelength.
Industry:Telecommunications
The ratio of an absolute error to the true, specified, or theoretically correct value of the quantity that is in error.
Industry:Telecommunications
The ratio of (a) the signal-to-noise ratio of a processed signal to (b) the signal-to-noise ratio of the unprocessed signal. Note: Signal processing gain is usually expressed in dB. 2. In a spread-spectrum communications system, the signal gain, signal-to-noise ratio, signal shape, or other signal improvement obtained by coherent band spreading, remapping, and reconstitution of the desired signal.
Industry:Telecommunications
