common fill device[In security,] one of a family of devices developed to read-in, transfer, or store key. [INFOSEC-99]
Common Gateway InterfaceThe Common Gateway Interface (CGI) is a standard that allows Web clients to interact with programs on a Web server.
Common Gateway Interface (CGI)A standard method of extending Web server functionality by executing programs or scripts on a Web server in response to Web browser requests, such as in…
Common Integration and Tasks Execution (CITE)An Air Force segment of the Command and Control Element that performs multisensor data correlation and tactics execution for space based elements.
common management information protocol (CMIP)A protocol used by an application process to exchange information and commands for the purpose of managing remote computer and communications resources.
Common Mode FailureA type of system failure in which diverse components are disabled by the same single cause.
common returnA return path that is common to two or more circuits and that serves to return currents to their source or to ground.
common return offsetIn a line or circuit, the dc potential difference between ground and the common return.
Common Security ControlSecurity control that can be applied to one or more agency information systems and has the following properties: 1) the development, implementation, and…
common transport trunk groupA trunk group between exchange carrier switches which transports access traffic for numerous interexchange carriers concurrently and may also carry…
common userIn communications systems, pertaining to communications facilities and services provided to essentially all users in the area served by the system, rather…
common user circuitA circuit designated to furnish a communication service to a number of users.
common user networkA system of circuits or channels allocated to furnish communication paths between switching centers to provide communication service on a common basis to…
common-battery signalingSignaling in which the signaling power of a telephone is supplied by the serving switch.
common-channel interoffice signaling (CCIS)In multichannel switched networks, a method of transmitting all signaling information for a group of trunks by encoding it and transmitting it over a…
common-channel signalingIn a multichannel communications system, signaling in which one channel in each link is used for signaling to control, account for, and manage traffic on…
common-mode interferenceInterference that appears between signal leads, or the terminals of a measuring circuit, and ground. 2.
common-mode rejection ratio (CMRR)The ratio of the common-mode interference voltage at the input of a circuit, to the corresponding interference voltage at the output.
common-mode voltageThe voltage common to both input terminals of a device. 2. In a differential amplifier, the unwanted part of the voltage between each input connection…
commonalityA quality that applies to materiel or systems: (a) possessing like and interchangeable characteristics enabling each to be utilized, or operated and…
communication configurationAn attribute describing the special arrangement for transferring information between two or more access points; it completes the structure associated with…
communication functionA function in an open system that provides the means for cooperating processes in different real open systems to communicate.
communication interfaceThat part of the API devoted to communications with other application software, external data transport facilities, and devices.
communicationsInformation transfer, among users or processes, according to agreed conventions. 2.
communications assistantA person who facilitates telephone conversation between text telephone users, users of sign language or individuals with speech disabilities through a…
communications blackoutA cessation of communications or communications capability caused by a lack of power to a communications facility or equipment. 2.
communications centerAn agency charged with the responsibility for handling and controlling communications traffic.
communications common carrierThe term "communications common carrier" as used in this part [of 47CFR] means any person (individual, partnership, association, joint-stock company…
communications coverConcealing or altering of characteristic communications patterns to hide information that could be of value to an adversary. [INFOSEC-99]
Communications Data BaseCommunications data files and updates including, but not limited to, communications message file, network management file, information management file…
communications deceptionDeliberate 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 netAn organization of stations capable of direct communication on a common channel or frequency. [JP 1-02] Synonym net.
communications networkAn 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 protectionThe application of communications security (COMSEC) measures to telecommunications systems in order (a) to deny unauthorized persons access to sensitive…
communications reliabilityThe probability that information transmitted from a communications station will arrive at the intended destination in a timely manner without loss of…
communications satelliteAn orbiting vehicle that relays signals between (a) terrestrial communications stations, (b) a terrestrial communications station and another…
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 subsystemA functional unit or operational assembly that is smaller than the larger assembly under consideration.
communications survivabilityThe ability of communications systems to continue to operate effectively under adverse conditions, though portions of the system may be damaged or…
communications systemA collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually…
communications system engineeringThe translation of user requirements for the exchange of information into cost-effective and low-risk technical solutions in terms of equipment and…
Communications System Segment (CSS)The communications front end for all Cheyenne Mountain Air Force Base (CMAFB) missions for non-common user traffic, performing circuit and message…
Communications System SynchronizationCoordination of timing among communications system elements to permit transmission/reception of messages/data which may be distorted by time delays and…
communications theoryTheory 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 watchThe monitoring of one or more communications lines, frequencies, or channels to obtain information by listening to or receiving all transmissions on them…
Communications ZoneRear 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…
CommunityA political entity that has the authority to adopt and enforce floodplain ordinances for the area under its jurisdiction.
community security policyThe definition of the basic security principles and policy for a community of interconnected systems thereby allowing a series of bilateral SISPs to be…
compact shelvingA system of mobile shelving intended to save space and/or guarantee security
Compacted InformationInformation which is generally and widely associated with a product. For example, most published books have an ISBN.
CompactionTo make soil dense by mechanical manipulation. Mechanical action which increases the density by reducing the voids in a material.
compandingAn operation in which the dynamic range of signals is compressed before transmission and is expanded to the original value at the receiver.
compandorA 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…
comparatorIn analog computing, a functional unit that compares two analog variables and indicates the result of that comparison. 2.
ComparisonThe process of comparing a biometric with a previously stored reference template or templates.
compartmentalizationThe division of data into isolated blocks for the purpose of reducing risk; e.g.
compartmentationThe segregation of components, programs, and information to provide isolation. Note: Compartmentation provides some protection against overall compromise…
compartmented mode1. [An] information systems (IS) mode of operation wherein each user with direct or indirect access to a system, its peripherals, remote terminals, or…
COMPASSCommon Operational Mission Planning and Support System (Army term)
compatibilityCapability 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 testingTesting to be carried out to validate proper interworking of interconnecting network facilities and equipment.
compatible sideband transmissionIndependent sideband transmission in which the carrier is deliberately reinserted at a lower level after its normal suppression to permit reception by…
compelled signalingSignaling in which the transmission of each signal in the forward direction from an originating terminal is inhibited until an acknowledgement of the…
Compensating ControlsThe management, operational, and technical controls (i.e., safeguards or countermeasures) employed by an organization in lieu of the recommended controls…