- Branche: Telecommunications
- Number of terms: 29235
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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.
An arrangement to transport access traffic between an end office and an IC POT (interexchange carrier point of termination) and may be either direct routed, tandem routed, or a combination of direct and tandem routed. (In the case of direct routed only, the access arrangement and access connection are synonymous. )
Industry:Telecommunications
An array of dipole antennas mounted in such a manner that every element of each antenna is in an extension, with respect to its long axis, of its counterparts in the other antennas in the array. Note: A collinear array is usually mounted vertically, in order to increase overall gain and directivity in the horizontal direction. When stacking dipole antennas in such a fashion, doubling their number will, with proper phasing, produce a 3-dB increase in directive gain.
Industry:Telecommunications
An array of fine, parallel, equally spaced grooves ("rulings") on a reflecting or transparent substrate, which grooves result in diffractive and mutual interference effects that concentrate reflected or transmitted electromagnetic energy in discrete directions, called "orders," or "spectral orders. " Note 1: The groove dimensions and spacings are on the order of the wavelength in question. In the optical regime, in which the use of diffraction gratings is most common, there are many hundreds, or thousands, of grooves per millimeter. Note 2: Order zero corresponds to direct transmission or specular reflection. Higher orders result in deviation of the incident beam from the direction predicted by geometric (ray) optics. With a normal angle of incidence, the angle , the deviation of the diffracted ray from the direction predicted by geometric optics, is given by where n is the spectral order, is the wavelength, and d is the spacing between corresponding parts of adjacent grooves. Note 3: Because the angle of deviation of the diffracted beam is wavelength-dependent, a diffraction grating is dispersive, i.e., it separates the incident beam spatially into its constituent wavelength components, producing a spectrum. Note 4: The spectral orders produced by diffraction gratings may overlap, depending on the spectral content of the incident beam and the number of grooves per unit distance on the grating. The higher the spectral order, the greater the overlap into the next-lower order. Note 5: By controlling the cross-sectional shape of the grooves, it is possible to concentrate most of the diffracted energy in the order of interest. This technique is called "blazing. "
Industry:Telecommunications
An array of gates having interconnections that can be programmed to perform a specific logical function.
Industry:Telecommunications
An array of parallel dipole antennas with flat reflectors, usually positioned in a line or plane. Note 1: The spacing and dimensions of the dipoles depend on the wavelength. Note 2: The main lobe of a fixed billboard antenna may, within limits, be steered by appropriate phasing of the respective signals to individual elements of the array. Synonym broadside antenna.
Industry:Telecommunications
An artificial language established for expressing a given class of algorithms.
Industry:Telecommunications
An artificial language that is used to generate or to express computer programs. Note: The language may be a high-level language, an assembly language, or a machine language.
Industry:Telecommunications
An artificial language that is used to generate or to express computer programs. Note: The language may be a high-level language, an assembly language, or a machine language.
Industry:Telecommunications
An aspect of the assessment of the effectiveness of a Target of Evaluation, namely that it cannot be configured or used in a manner which is insecure but which an administrator or end-user would reasonably believe to be secure.
Industry:Telecommunications
An aspect of the assessment of the effectiveness of a Target of Evaluation, namely the ability of its security enforcing functions and mechanisms to work together in a way which is mutually supportive and provides an integrated and effective whole.
Industry:Telecommunications
