- 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.
The wavelength interval over which the magnitude of all spectral components is equal to or greater than a specified fraction of the magnitude of the component having the maximum value. Note 1: In optical communications applications, the usual method of specifying spectral width is the full width at half maximum. This method may be difficult to apply when the spectrum has a complex shape. Another method of specifying spectral width is a special case of root-mean-square deviation where the independent variable is wavelength, , and f () is a suitable radiometric quantity. Note 2: The relative spectral width, /, is frequently used where is obtained according to note 1, and is the center wavelength.
Industry:Telecommunications
The signal path from the input of the bit-masking block to the output of the adaptive predictor.
Industry:Telecommunications
Video imagery in which consecutive frames are highly uncorrelated.
Industry:Telecommunications
To translate a computer program expressed in an assembly language into a machine language.
Industry:Telecommunications
The state of being synchronous. 2. For repetitive events with the same, multiple, or submultiple repetition rates, a relationship among the events such that a significant instant of one event bears a fixed time relationship to a corresponding instant in another event. Note: Synchronism is maintained when there is a fixed, i.e., constant, phase relationship among the group of repetitive events. 3. The simultaneous occurrence of two or more events at the same instant on the same coordinated time scale.
Industry:Telecommunications
With reference to both analog and digital interfaces, the ATM functional unit and technology that operates with analog 2-wire interfaces and standard digital line rates on both the inputs and the outputs, e. G. , DS1 on the input and DS3 on the output, and which passes the cells received on the input to the output. The relationship between input and output, can change on a per call basis, i.e., switched virtual circuits must be supported and permanent virtual circuits may be supported. (For the purposes of this document it is assumed that the cell formation function associated with an analog input is performed before the switch function occurs. However, this definition is not intended to constrain technical implementations. ) This device allows blocking and concentration. The switch function is also required to perform 2-wire to 4-wire conversion as well as A/D conversion. 2. With reference to digital interfaces only, the ATM functional unit and technology that operates with cell-based signals and over standard line rates on both the inputs and the outputs, e. G. , DS1 on the input and DS3 on the output, and which passes the cells received on the input to the output. The relationship between input and output, can change on a per-call basis, i.e., switched virtual circuits must be supported and permanent virtual circuits may be supported. This device allows blocking and performs concentration.
Industry:Telecommunications
To send a message, electronically, to a computer or computer system from which it can be retrieved electronically on demand by multiple authorized entities and on multiple occasions. Note: Said, e.g., of messages on an electronic bulletin board.
Industry:Telecommunications
The volume of influence of a physical phenomenon, expressed vectorially. 2. On a data medium or in storage, a specified area used for a particular class of data, e. G. , a group of character positions used to enter or display wage rates on a screen. 3. Defined logical data that are part of a record. 4. The elementary unit of a record that may contain a data item, a data aggregate, a pointer, or a link. 5. In an interlaced, raster-scanned video display, a partial frame, consisting of every nth scanning line of a complete frame, where n is an integer equal to the number of fields (usually two) in a complete frame. Note 1: For example, in the National Television Standards Committee (NTSC) television specification used in the United States, a single frame is composed of two fields, each of which has half the number of scanning lines in a complete frame. The scanning lines of a field are separated by twice the space between the scanning lines in the full frame. The two fields are interlaced, i.e., a complete frame consists of the following traces, which are listed in the order of their appearance in the complete frame, but not the order in which scanning occurs: the first line of the first field, the first line of the second field, the second line of the first field, the second line of the second field, the third line of the first field, the third line of the second field, etc. , until completion of the full frame. The fields are scanned alternately, one complete field at a time. Thus, the flicker rate of the display is perceived by the eye to be twice as fast as that which would result if the complete frame were to be scanned in line-by-line order. Note 2: Not all scanning lines are necessarily applied to user information, i.e., the graphic display. Certain scanning lines, not seen under ordinary viewing conditions, are often used for transmitting test signals that indicate the quality of the displayed video.
Industry:Telecommunications
The use of signals for controlling communications. 2. In a telecommunications network, the information exchange concerning the establishment and control of a connection and the management of the network, in contrast to user information transfer. 3. The sending of a signal from the transmitting end of a circuit to inform a user at the receiving end that a message is to be sent.
Industry:Telecommunications
