- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
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.
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Industry:Telecommunications
Traffic measured or studied during one or more study weeks for which data are collected and processed. Normally, a study period consists of four study weeks. Synonyms first-route traffic, study period.
Industry:Telecommunications
The zero reference level used to apply and measure voltages in a system. Note: A potential difference may exist between this reference level and the ground potential of the Earth, which varies with locality, soil conditions, and meteorological phenomena.
Industry:Telecommunications
Unintentional signals or noise induced or conducted on a telecommunications or information system signal, power, control, indicator, or other external interface line.
Industry:Telecommunications
Traffic which is both (a) handled to completion through pulses generated by the customer and (b) for which either a message unit charge, bulk charge or message toll charge is except for that traffic recorded by means of message registers.
Industry:Telecommunications
Transmission in which signals representing the same information are sent over the same channel at different times. Note: Time diversity is often used over systems subject to burst error conditions, and at intervals adjusted to be longer than an error burst.
Industry:Telecommunications
The transducing of the information in a real image into the photographic or electronic medium. Note: Normally in motion-reproducing systems, synchronous audio information is simultaneously transduced.
Industry:Telecommunications
The velocity of propagation of an envelope produced when an electromagnetic wave is modulated by, or mixed with, other waves of different frequencies. Note: The group velocity is the velocity of information propagation and, loosely, of energy propagation. 2. In optical fiber transmission, for a particular mode, the reciprocal of the rate of change of the phase constant with respect to angular frequency. Note: The group velocity equals the phase velocity if the phase constant is a linear function of the angular frequency, = 2f, where f is the frequency. 3. In optical-fiber transmission, the velocity of the modulated optical power.
Industry:Telecommunications
The voice quality resulting from the use of a nominal 4-kHz telephone channel. Note: Toll quality may be quantized in terms of a specified bit error ratio.
Industry:Telecommunications
The source or generator of any signal on a transmission medium.
Industry:Telecommunications
