- 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 layered hierarchical structure, configuration, or model of a communications or distributed data processing system that (a) enables system description, design, development, installation, operation, improvement, and maintenance to be performed at a given layer or layers in the hierarchical structure, (b) allows each layer to provide a set of accessible functions that can be controlled and used by the functions in the layer above it, (c) enables each layer to be implemented without affecting the implementation of other layers, and (d) allows the alteration of system performance by the modification of one or more layers without altering the existing equipment, procedures, and protocols at the remaining layers. Note 1: Examples of independent alterations include (a) converting from wire to optical fibers at a physical layer without affecting the data-link layer or the network layer except to provide more traffic capacity, and (b) altering the operational protocols at the network level without altering the physical layer. Note 2: Open systems architecture may be implemented using the Open Systems Interconnection--Reference Model (OSI--RM) as a guide while designing the system to meet performance requirements. 2. Nonproprietary systems architecture.
Industry:Telecommunications
The last point of service rendered by a commercial carrier under applicable tariffs. Note 1: The service termination point is usually on the customer premises. Note 2: The customer is responsible for equipment and operation from the service termination point to user end instruments. Note 3: The service termination point usually corresponds to the demarcation point.
Industry:Telecommunications
The largest unit of storage structure that consists of a named collection of all occurrences in a database of records of a particular record type. 2. A set of related records treated as a unit, for example, in stock control, a file could consist of a set of invoices.
Industry:Telecommunications
The land mobile and domestic fixed public services, the stations of which are open to public correspondence.
Industry:Telecommunications
The lamp associated with a cord circuit that indicates supervisory conditions for the respective part of the connection.
Industry:Telecommunications
The known or suspected exposure of clandestine personnel, installations, or other assets or of classified information or material, to an unauthorized person. 2. The disclosure of cryptographic information to unauthorized persons. 3. The recovery of plain text of encrypted messages by unauthorized persons through cryptanalysis methods. 4. Disclosure of information to unauthorized persons or a violation of the security policy of a system in which unauthorized intentional or unintentional disclosure, modification, destruction, or loss of an object may have occurred.
Industry:Telecommunications
The key, used in an asymmetric algorithm, that is publicly available.
Industry:Telecommunications
The joint telecommunications industry/Federal Government operation established by the National Communications System to assist in the initiation, coordination, restoration, and reconstitution of National Security or Emergency Preparedness (NS/EP) telecommunications services or facilities.
Industry:Telecommunications
