- 行业: 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 description of the conditions under which an information system (IS) operates based on the sensitivity of information processed and the clearance levels, formal access approvals, and need-to-know of its users. Four modes of operation are authorized for processing or transmitting information: dedicated mode, system-high mode, compartmented/ partitioned mode, and multilevel mode.
Industry:Telecommunications
A description of the security capabilities of a product, giving the necessary information for a prospective purchaser to decide whether it will help to satisfy his system security objectives.
Industry:Telecommunications
A design allowance that provides for sufficient system gain or sensitivity to accommodate expected fading, for the purpose of ensuring that the required quality of service is maintained. 2. The amount by which a received signal level may be reduced without causing system performance to fall below a specified threshold value. Synonym fading margin.
Industry:Telecommunications
A design allowance that provides for sufficient system gain or sensitivity to accommodate expected fading, for the purpose of ensuring that the required quality of service is maintained. 2. The amount by which a received signal level may be reduced without causing system performance to fall below a specified threshold value. Synonym fading margin.
Industry:Telecommunications
A designated part of the information transfer capability having specified characteristics, provided at the user-network interface.
Industry:Telecommunications
A designation applied to telecommunications and automated information systems, and to associated areas, circuits, components, and equipment, in which only unclassified signals are processed. Note: Encrypted signals are unclassified. 2. Designation applied to information systems, and to associated areas, circuits, components, and equipment, in which national security information is not processed.
Industry:Telecommunications
A designation assigned to describe the service treatment and privileges given to a particular terminal. 2. A subgrouping of telephone users for the purpose of rate distinction. Note: Examples of class of service subgrouping include distinguishing between (a) individual and party lines, (b) Government and non-Government lines, (c) those permitted to make unrestricted international dialed calls and those not so permitted, (d) business, residence, and coin-operated, (e) flat rate and message rate, and (f) restricted and extended area service. 3. A category of data transmission provided by a public data network in which the data signaling rate, the terminal operating mode, and the code structure, are standardized. Note: Class of service is defined in ITU-T Recommendation X. 1. Synonym user service class.
Industry:Telecommunications
A designation assigned to describe the service treatment and privileges given to a particular terminal. 2. A subgrouping of telephone users for the purpose of rate distinction. Note: Examples of class of service subgrouping include distinguishing between (a) individual and party lines, (b) Government and non-Government lines, (c) those permitted to make unrestricted international dialed calls and those not so permitted, (d) business, residence, and coin-operated, (e) flat rate and message rate, and (f) restricted and extended area service. 3. A category of data transmission provided by a public data network in which the data signaling rate, the terminal operating mode, and the code structure, are standardized. Note: Class of service is defined in ITU-T Recommendation X. 1. Synonym user service class.
Industry:Telecommunications
A designator used to describe the service feature privileges, restrictions, and circuit characteristics for lines or trunks that access a switch. Note: Examples of classmarks include precedence level, conference privilege, security level, and zone restriction. Synonym class-of-service mark.
Industry:Telecommunications
A designator used to describe the service feature privileges, restrictions, and circuit characteristics for lines or trunks that access a switch. Note: Examples of classmarks include precedence level, conference privilege, security level, and zone restriction. Synonym class-of-service mark.
Industry:Telecommunications
