- 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.
For analog input channels, protection against overvoltages that may be applied between any two input connectors or between any input connector and ground.
Industry:Telecommunications
For basic rate access in an Integrated Services Digital Network (ISDN) environment, a user-to-network interface reference point that (a) is characterized by a 4-wire, 144-kb/s (2B+D) user rate, (b) serves as a universal interface between ISDN terminals or terminal adapters and the network channel termination, (c) allows a variety of terminal types and subscriber networks, such as PBXs, local area networks (LANs,) and controllers, to be connected to the network, and (d) operates at 4000 48-bit frames per second, i.e., 192 kb/s, with a user portion of 36 bits per frame, i.e., 144 kb/s.
Industry:Telecommunications
For basic rate access in an Integrated Services Digital Network (ISDN) environment, a user-to-network interface reference point that (a) is characterized by a four-wire, 144-kb/s (2B+D) user rate, (b) accommodates the link access and transport layer function in the ISDN architecture, (c) is located at the user premises, (d) is distance sensitive to the servicing network terminating equipment, and (e) functions in a manner analogous to that of the Channel Service Units (CSUs) and the Data Service Units (DSUs. )
Industry:Telecommunications
For basic-rate access in an Integrated Services Digital Network (ISDN) environment, a user-to-network interface reference point that is characterized by the use of a 2-wire-loop transmission system that (a) conveys information between the 4-wire user-to-network interface, i.e., the S/T reference point, and the local exchange, (b) is located in the servicing central office, and (c) is not as distance sensitive as a service using a T interface.
Industry:Telecommunications
For equipment, such as a circuit or a switch, the ratio of the actual time in use to the available time during a 1-hour period. Note 1: Occupancy is usually expressed in percent. Note 2: Occupancy may be plotted versus time of day. Synonym usage.
Industry:Telecommunications
For equipment, such as a circuit or a switch, the ratio of the actual time in use to the available time during a 1-hour period. Note 1: Occupancy is usually expressed in percent. Note 2: Occupancy may be plotted versus time of day. Synonym usage.
Industry:Telecommunications
For multichannel equipment, the ratio of (a) the mean noise power measured in any channel, with all channels loaded with white noise, to (b) the mean noise power measured in the same channel, with all channels but the measured channel loaded with white noise.
Industry:Telecommunications
For nodes (or links,) the minimum number of nodes (or links) whose removal results in losing all paths that can be used to transfer information from a source to a sink.
Industry:Telecommunications
For optical fibers, a class of graded-index profiles characterized by where n (r) is the nominal refractive index as a function of distance from the fiber axis, n1 is the nominal refractive index on axis, n2 is the refractive index of the homogeneous cladding (n (r) = n2 when r ,) is the core radius, and g is a parameter that defines the shape of the profile. Note 1: is often used in place of g. Hence, this is sometimes called an alpha profile. Note 2: For this class of profiles, multimode distortion is smallest when g takes a particular value depending on the material used. For most materials, this optimum value is approximately 2. When g increases without limit, the profile tends to a step-index profile.
Industry:Telecommunications
