- 産業: 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.
A group of 12 voice-frequency channels transmitted as a unit through a carrier system.
Industry:Telecommunications
A group of antennas in which the relative phases of the respective signals feeding the antennas are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in undesired directions. Note 1: The relative amplitudes of--and constructive and destructive interference effects among--the signals radiated by the individual antennas determine the effective radiation pattern of the array. Note 2: A phased array may be used to point a fixed radiation pattern, or to scan rapidly in azimuth or elevation.
Industry:Telecommunications
A group of audiovisual services including videophone as defined in ITU-T Recommendation F. 721 and videoconferencing (defined in ITU-T H-Series Recommendations. )
Industry:Telecommunications
A group of bits forming a separately transferable entity used to convey information on a signaling link.
Industry:Telecommunications
A group of bits or characters transmitted as a unit and usually containing an encoding procedure for error control purposes. 2. In data transmission, a group of records sent, processed, or recorded as a unit. Note: A transmission block is usually terminated by an end-of-block character (EOB,) end-of-transmission-block character (ETB,) or end-of-text character (EOT or ETX. )
Industry:Telecommunications
A group of bits or digits that is transmitted as a unit and that may be encoded for error-control purposes. 2. A string of records, words, or characters, that for technical or logical purposes are treated as a unit. Note 1: Blocks (a) are separated by interblock gaps, (b) are delimited by an end-of-block signal, and (c) may contain one or more records. Note 2: A block is usually subjected to some type of block processing, such as multidimensional parity checking, associated with it. 3. In programming languages, a subdivision of a program that serves to group related statements, delimit routines, specify storage allocation, delineate the applicability of labels, or segment parts of the program for other purposes.
Industry:Telecommunications
A group of conductors of the same general type (e.g., quadded, paired) within a single cable sheath.
Industry:Telecommunications
A group of digitized voice or data channels or both with bit streams that are combined into a single digital bit stream for transmission over communications media. Note: Digital transmission groups usually are categorized by their maximum capacity, not by a specific number of channels. However, the maximum digital transmission group capacity must be equal to or greater than the sum of the individual multiplexer input channel capacities.
Industry:Telecommunications
A group of four wires composed of two pairs twisted together. Note: The pairs have a fairly long length of twist and the quad a fairly short length of twist.
Industry:Telecommunications
