- 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 performance specification of a communications channel or system. Note: QOS may be quantitatively indicated by channel or system performance parameters, such as signal-to-noise ratio (S/N,) bit error ratio (BER,) message throughput rate, and call blocking probability. 2. A subjective rating of telephone communications quality in which listeners judge transmissions by qualifiers, such as excellent, good, fair, poor, or unsatisfactory.
Industry:Telecommunications
The performance of tests to enable a data processing system to recognize entities. Note: An example of identity authentication is the checking of a password or identity token.
Industry:Telecommunications
The peak-to-rms voltage ratio of an alternating current (ac) signal.
Industry:Telecommunications
The percentage of time a channel was available for use in a specified period of scheduled availability. Note 1: Channel reliability is given by where To is the channel total outage time, Ts is the channel total scheduled time, and Ta is the channel total available time. Note 2: Ts = Ta + To.
Industry:Telecommunications
The peak voltage level of a nominal 400-Hz sine wave required to excite the analog-to-digital converter of the transmit channel unit to the extremes of its encoding range.
Industry:Telecommunications
The pattern of radio signal frequencies, amplitudes, and phases, which pattern characterizes the output of a particular device and tends to distinguish it from other devices.
Industry:Telecommunications
The path, relative to a specified frame of reference, described by the center of mass of a satellite or other object in space subjected primarily to natural forces, mainly the force of gravity.
Industry:Telecommunications
The path traversed by electromagnetic waves that is not subject to reflection or refraction by the atmosphere.
Industry:Telecommunications
The part of the transmission (power) loss that results from scattering within a transmission medium or from roughness of a reflecting surface.
Industry:Telecommunications
