Telecommunications terms starting with C

924 terms

communications cover Concealing or altering of characteristic communications patterns to hide information that could be of value to an adversary. [INFOSEC-99]
communications deception Deliberate transmission, retransmission, or alteration of communications to mislead an adversary's interpretation of the communications. [NIS] 2.
Communications Intelligence (COMINT) Technical and intelligence information derived from foreign communications by other than intended recipients.
communications jamming (COMJAM) The portion of electronic jamming that is directed against communications circuits and systems. 2.
communications net An organization of stations capable of direct communication on a common channel or frequency. [JP 1-02] Synonym net.
communications net operation See net operation.
communications network An organization of stations capable of intercommunications, but not necessarily on the same channel. [JP 1-02]
communications processor unit (CPU) A computer embedded in a communications system. Note 1: An example of a CPU is the message data processor of a DDN switching center.
communications profile [An] analytic model of communications associated with an organization or activity.
communications protection The application of communications security (COMSEC) measures to telecommunications systems in order (a) to deny unauthorized persons access to sensitive…
communications protocol See protocol.
communications reliability The probability that information transmitted from a communications station will arrive at the intended destination in a timely manner without loss of…
communications satellite An orbiting vehicle that relays signals between (a) terrestrial communications stations, (b) a terrestrial communications station and another…
communications saturation See saturation.
Communications Security (COMSEC) The protection resulting from all measures designed to deny unauthorized persons information of value, which might be derived from the possession and…
communications security equipment See COMSEC equipment.
communications security material See COMSEC material.
communications silence The avoidance of any type of transmission, emission, or radiation by any means, including radiation from receiving equipment.
communications sink See sink.
communications source See source.
communications subsystem A functional unit or operational assembly that is smaller than the larger assembly under consideration.
communications survivability The ability of communications systems to continue to operate effectively under adverse conditions, though portions of the system may be damaged or…
communications system A collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually…
communications system engineering The translation of user requirements for the exchange of information into cost-effective and low-risk technical solutions in terms of equipment and…
communications system survivability See survivability.
communications theory Theory that is devoted to the probabilistic characteristics of the transmission of data in the presence of noise, and that is used to advance the design…
communications watch The monitoring of one or more communications lines, frequencies, or channels to obtain information by listening to or receiving all transmissions on them…
Communications Zone Rear part of the theater of operations (behind but contiguous to the combat zone) which contains the lines of communications, establishments for supply…
communications-electronics (C-E) The specialized field concerned with the use of electronic devices and systems for the acquisition or acceptance, processing, storage, display, analysis…
Community Antenna Television (CATV) See cable TV.
community of interest A grouping of users who generate a majority of their traffic in calls to other members of the group.
community reception (in the broadcasting-satellite service) The reception of emissions from a space station in the broadcasting-satellite service by receiving equipment, which in some cases may be complex and have…
community security policy The definition of the basic security principles and policy for a community of interconnected systems thereby allowing a series of bilateral SISPs to be…
compact An agreement between states apportioning the water of a river basin to each of the signatory states.
compact disk read-only memory See CD ROM.
Compaction To make soil dense by mechanical manipulation. Mechanical action which increases the density by reducing the voids in a material.
companding An operation in which the dynamic range of signals is compressed before transmission and is expanded to the original value at the receiver.
compandor A device that incorporates a compressor and an expander, each of which may be used independently.
comparably efficient interconnection (CEI) An equal-access concept developed by the FCC stating that, ". . . if a carrier offers an enhanced service, it should be required to offer network…
comparator In analog computing, a functional unit that compares two analog variables and indicates the result of that comparison. 2.
compartmentalization The division of data into isolated blocks for the purpose of reducing risk; e.g.
compartmentation The segregation of components, programs, and information to provide isolation. Note: Compartmentation provides some protection against overall compromise…
compartmented mode 1. [An] information systems (IS) mode of operation wherein each user with direct or indirect access to a system, its peripherals, remote terminals, or…
compatibility Capability of two or more items or components of equipment or material to exist or function in the same system or environment without mutual interference.
compatibility testing Testing to be carried out to validate proper interworking of interconnecting network facilities and equipment.
compatible sideband transmission Independent sideband transmission in which the carrier is deliberately reinserted at a lower level after its normal suppression to permit reception by…
compelled signaling Signaling in which the transmission of each signal in the forward direction from an originating terminal is inhibited until an acknowledgement of the…
competitive access provider (CAP) A company that provides exchange access services in competition with an established U.S. telephone local exchange carrier.
competitive clip In time-assignment speech interpolation (TASI) or digital speech interpolation (DSI), truncation of the initial part of a speech spurt, caused when all…
compile To translate a computer program expressed in a high-level language into a program expressed in a lower level language, such as an intermediate language…
compiler A program which performs a process of compilation on a program written in a high level programming language.
compiling program Synonym compiler.
complement (of cable) A group of conductors of the same general type (e.g., quadded, paired) within a single cable sheath. [47 CFR Pt.36-A]
complementary colors 1. With respect to additive mixing, any pair of colors that are radially opposite one another relative to the white point on a chromaticity chart, e.g.
complementary network service (CNS) A means for an enhanced-service provider customer to connect to a network and to the enhanced service provider.
complex All groups of operator positions, wherever located, associated with the same call distribution and/or stored program control unit. [47 CFR Pt.36-A]
compliance testing A one-time process to verify that a collection of software and hardware fulfills given specifications. [Mattila]
component Subsystem, assembly, or subassembly of logically grouped hardware and software, that performs interacting tasks to provide BMDS capability at a functional…
component analog video See CAV.
component color The structure of a video signal wherein the R', G', and B' signals are kept separate from one another or wherein luminance and two bandlimited…
component profile A profile that is made up of a defined subset of a single standard [POSIX.0].
composite cable A communications cable having both optical and metallic signal-carrying components. Note 1: A cable having optical fiber(s) and a metallic component, e.g.
composite color The structure of a video signal wherein the luminance and two bandlimited color-difference signals are simultaneously present in the channel.
composite signaling (CX) Signaling in which an arrangement is made to provide direct current signaling and dial pulsing beyond the range of conventional loop signaling.
composite synchronization A signal consisting of horizontal sync pulses, vertical sync pulses, and equalizing pulses only. [After Silicon]
composite test signal In television systems, a test signal consisting of a line bar (125 ns rise time and fall time), a 2T pulse (250 ns half-amplitude duration), a 12.5T (1.
composite two-tone test signal A test signal composed of two different frequencies and used for intermodulation distortion measurements.
Composite Video Combines red, green, blue and synchronization signals into one video signal so that only one connector is required; used by most TVs and VCRs.
composite video signal The electrical signal that represents complete color picture information and all synchronization signals, including blanking and the deflection…
composited circuit A circuit that can be used simultaneously either for telephony and dc telegraphy or for telephony and signaling.
compound document A computer-generated document comprised of a variety of data formats, such as text and graphics
compound signal In ac signaling, a signal consisting of the simultaneous transmission of more than one frequency.
compress See data compaction, data compression, signal compression.
compressed video Video that has been encoded so as to reduce the number of bits required for storage or transmission.
Compression Compression algorithms such as Zip and RLE reduce the size of files saving both storage space and reducing bandwidth required for access and transmission.
Compression Ratio The ratio of the size of an uncompressed file to a compressed file, e.g., with a 10:1 compression ratio, a 1 MB file can be compressed to 100 KB.
Compressor A device used to compress air for mechanical or electrical power production, and in air conditioners, heat pumps, and refrigerators to pressurize the…
Compromise Disclosure of information to unauthorized persons, or a violation of the security policy of a system in which unauthorized intentional or unintentional…
compromised obsolete In cryptography, a key state in which the secrecy or integrity of the key is suspect. [After X9.17/95]
compromising emanations Unintentional signals that, if intercepted and analyzed, would disclose the information transmitted, received, handled, or otherwise processed by…
Computer Includes but is not limited to network servers, desktops, laptops, notebook computers, mainframes and PDAs (personal digital assistants).
computer abuse In computer security, a willful or negligent unauthorized activity that affects or involves the computer security of a data processing system. [2382-pt.
computer architecture Of a computer, the physical configuration, logical structure, formats, protocols, and operational sequences for processing data, controlling the…
computer conference A communication session, facilitated by means of a computer network, between several participants, each of them having access to all messages submitted.
computer conferencing Teleconferencing supported by one or more computers. 2. An arrangement in which access, by multiple users, to a common database is mediated by a…
computer crime A violation of law committed with the aid of, or directly involving, a data processing system or network. [2382-pt.8]
computer cryptography Use of a crypto-algorithm program by a computer to authenticate or encrypt/decrypt information. [INFOSEC-99]
computer fraud A fraud committed with the aid of, or directly involving, a data processing system or network. [2382-pt.8]
computer graphics Graphics implemented through the use of computers. 2. Methods and techniques for converting data to or from graphic displays via computers. 3.
computer graphics metafile See cgm.
computer language Synonym programming language.
computer network A network of data processing nodes that are interconnected for the purpose of data communication. 2.
computer network engineering See network engineering.
computer network operating system (NOS) A specialized operating system designed for computer networking on minicomputers and microcomputers in a local networking area / campus area network.
computer peripheral See peripheral equipment.
computer program See program.
computer program origin The address assigned to the initial storage location of a computer program in main storage.
computer routine See routine.
computer science The discipline that is concerned with methods and techniques relating to data processing performed by automatic means.
Computer Security (COMPUSEC) The totality of security safeguards needed to provide acceptable level of protection for automatic data processing (ADP) systems and the classified data…