- 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.
In a Broadband Integrated Services Digital Network (B-ISDN,) a proposed transport level technique in which time-division multiplexing and switching is to be used across the user's network interface.
Industry:Telecommunications
In a building, a centralized space for telecommunications equipment that serves the occupants of the building. Note: An equipment room is considered distinct from a telecommunications closet because of the nature or complexity of the equipment housed by the equipment room.
Industry:Telecommunications
In a building, a space in which the joining of inter- and/or intrabuilding telecommunications backbone facilities takes place. Note: An entrance room may serve also as an equipment room.
Industry:Telecommunications
In a building, an enclosure, created by building components such as a suspended ceiling or false floor, and used for the movement of environmental air. Note 1: A plenum may be used to contain communications and power cables, e.g., to reach equipment installed in open office or laboratory space. Note 2: Cables installed in plenums must meet applicable environmental and fire protection regulations. This may mean enclosing them in suitable ducts or using cables having jackets and other components made of materials that are resistant to open flame and are non-toxic at high temperatures.
Industry:Telecommunications
In a building, the point of emergence of telecommunications service cables through an exterior wall, floor slab, or from a rigid metal conduit or intermediate metal conduit.
Industry:Telecommunications
In a central office or customer premises, a frame that (a) cross-connects the user cable media to individual user line circuits and (b) may serve as a distribution point for multipair cables from the main distribution frame (MDF) or combined distribution frame (CDF) to individual cables connected to equipment in areas remote from these frames.
Industry:Telecommunications
In a code, a word that consists of a sequence of symbols assembled in accordance with the specific rules of the code and assigned a unique meaning. Note: Examples of code words are error-detecting-or-correcting code words and communication code words, such as SOS, MAYDAY, ROGER, TEN-FOUR, and OUT. 2. A cryptonym used to identify sensitive intelligence data. 3. A word that has been assigned a classification and a classified meaning to safeguard intentions and information regarding a classified plan or operation.
Industry:Telecommunications
In a common-channel signaling network, a switch that provides for the transfer from one signaling link to another. Note: In nonassociated common-channel signaling, the signal transfer point is not the point through which the call, which is associated with the signaling being switched, passes. 2. A packet switching device that performs a message routing function in a CCS network. It receives, discriminates, and transfers CCS messages between the signaling points to which it is connected. The STP function in a network may be implemented by separate network elements or may be resident within switches. When provided on a separate network element basis, the STPs are generally duplexed for reasons of signaling availability. Besides the message routing function, an STP may provide functionality such as gateway screening and global title translation. 3. A signaling point with the function of transferring signaling messages from one signaling link to another and considered exclusively from the viewpoint of the transfer.
Industry:Telecommunications
In a communication circuit (4- or 2-wire) in which the two directions of transmission can be separated from each other, the attenuation of echo signals that return to the input of the circuit under consideration. Note: Echo attenuation is expressed as the ratio of the transmitted power to the received echo power in dB.
Industry:Telecommunications
In a communication system, a point at which the reference level is 1 mW, i.e., 0 dBm. Note: The actual power level of the communications traffic is not necessarily 0 dBm. It is usually below the reference level. The reference is for system design and test purposes. Synonym zero transmission level point.
Industry:Telecommunications
