Lexique

 
 



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ATM: Asynchronous Transfer Mode; a high speed form of digital communications increasingly used for on the Internet
BND: Bundesachrichtendienst; the foreign intelligence agency of the Federal Republic of Germany. Its functions include Sigint
CCITT: Consultative Committee for International Telephony and Telegraphy; United Nations agency developing standards and protocols for telecommunications; part of the ITU; also known as ITU-T
CEPT: Conference Europeene des Postes et des Telecommunications
CLID: Calling Line Identification Data
Comint: Communications Intelligence
COMSAT (Civil or commercial) communications satellite; for military communications usage, the phraseology is commonly reversed, i.e., SATCOM.
CRIM: Centre de Recherche Informatique de Montreal
CSDF: Collected Signals Data Format; a term used only in Sigint
CSE: Communications Security Establishment, the Sigint agency of Canada
CSS: Central Security Service; the military component of NSA
DARPA: Defense Advanced Research Projects Agency (United States Department of Defense)
DGSE: Directorate General de Securite Exteriere, the foreign intelligence agency of France. Its functions include Sigint
DSD: Defence Signals Directorate, the Sigint agency of the Commonwealth of Australia
DODJOCC: Department of Defense Joint Operations Centre Chicksands
E1, E3 (etc): Standard for digital or TDM communications systems defined by the CEPT, and primarily used within Europe and outside North America
ENFOPOL: EU designation for documents concerned with law enforcement matters/police
FAPSI: Federalnoe Agenstvo Pravitelstvennoi Svyazi i Informatsii, the Federal Agency for Government Communications and Information of Russia. Its functions include Sigint
FBI: Federal Bureau of Investigation; the national law enforcement and counter-intelligence agency of the United States
FDF: Fast Data Finder
FDM: Frequency Division Multiplex; a form of multi-channel communications based on analogue signals
FISA: Foreign Intelligence Surveillance Act (United States)
FISINT: Foreign Instrumentation Signals Intelligence, the third branch of Sigint
Gbps: Gigabits per second
GCHQ: Government Communications Headquarters; the Sigint agency of the United Kingdom
GHz: GigaHertz
Gisting: Within Sigint, the analytical task of replacing a verbatim text with the sense or main points of a communication
HDLC: High-level Data Link Control
HF: High Frequency; frequencies from 3MHz to 30MHz
HMM: Hidden Markov Modelling, a technique widely used in speech recognition systems.
ILETS: International Law Enforcement Telecommunications Seminar
Intelsat: International Telecommunications Satellite
IOSA: Interim Overhead Sigint Architecture
Iridium: Satellite Personal Communications System involving 66 satellites in low earth orbit, providing global communications from mobile telephones
ISDN: Integrated Services Data Network
ISP: Internet Service Provider
ITU: International Telecommunications Union
IUR: International User Requirements (for communications interception); IUR 1.0 was prepared by ILETS (qv) in 1994
IXP: Internet Exchange Point
LAN: Local Area Network
LES: Law Enforcement Agency (American usage)
Mbps: Megabits per second
MHz: MegaHertz
Microwave: Radio signals with wavelengths of 10cm or shorter; frequencies above 1GHz
Modem: Device for sending data to and from (e.g.) a computer; a "modulator-demodulator)
MIME: Multipurpose Internet Message Extension; a systems used for sending computer files, images, documents and programs as "attachments" to an e-mail message
N-gram analysis: A system for analysing textual documents; in this context, a system for matching a large group of documents to a smaller group embodying a topic of interest. The method depends on counting the frequency with which character groups of length N appear in each document; hence N-gram
NSA: National Security Agency, the Sigint agency of the United States
OCR: Optical Character Recognition
PC: Personal Computer
PCS: Personal Communications Systems; the term includes mobile telephone systems, paging systems and future wide area radio data links for personal computers, etc
POP/ POP3: Post Office Program; a system used for receiving and holding e-mail
PTT: Posts Telegraph and Telephone (Administration or Authority)
RAID: Redundant Array of Inexpensive Disks
SCI: Sensitive Compartmented Intelligence; used to limit access to Comint information according to "compartments"
SCPC: Single Channel Per Carrier; low capacity satellite communications system
SMTP: Standard Mail Transport Protocol
Sigint: Signals Intelligence
SONET: Synchronous Optical Network
SMDS: Switched Multi-Megabit Data Service
SMO: Support for Military Operations
SPCS: Satellite Personal Communications Systems
SRI: Signal Related Information; a term used only in Sigint
STOA: Science and Technology Assessments Office of the European Parliament; the body commissioning this report
T1,T3 (etc): Digital or TDM communications systems originally defined by the Bell telephone system in North America, and primarily used there
TCP/IP: Terminal Control Protocol/Internet Protocol
TDM: Time Division Muliplex; a form of multi-channel communications normally based on digital signals
Traffic analysis: Within Sigint, a method of analysing and obtaining intelligence from messages without reference to their content; for example by studying the origin and destination of messages with a view to eliciting the relationship between sender and recipient, or groups thereof
UKUSA: UK-USA agreement
VPN: Virtual Private Network
VSAT: Very Small Aperture Terminal; low capacity satellite communications system serving home and business users
WAN: Wide Area Network
WRF: Workfactor Reduction Field
WWW: World Wide Web
X.25, V.21, V.34, V.90, V.100 (etc): are CCITT telecommunications standards