Wikipedia:Federal Standard 1037C terms

The following terms are defined in Federal Standard 1037C, which is essentially a dictionary of technical terms promulgated by the United States government, and available to view here: Federal Standard 1037C. This page and its many many subpages are in dire need of attention. The articles linked from here were created in early stages of Wikipedia. They were just copied directly from the Federal publication with only minimal wikification, and were originally just dictionary definitions. Some have expanded as time has passed, and many have the potential to become good articles, or to be merged into new or existing articles. Others clearly can never be more than a dictionary definition, and should be deleted or moved to Wiktionary.

The goal of this project is to work through these articles and determine the best outcome for each. The articles fall into several categories:

Articles that should be made
Some of these terms should have articles and do not. Please do not copy any definitions from Federal Standard 1037C with attribution to non-Federal sources such as NATO, ITU-T, the Radio Regulations etc. as these are derived from sources not known to be in the public domain. Instead, if a term should have an article, please write your own definitions for these terms in your own words. Look for opportunities to redirect red-linked terms to existing articles where possible.

Articles that should not exist
Many of these terms have articles but should not, because they can never be more than dictionary definitions. Such articles that have already been made should be moved to Wiktionary. Do this with caution however. In many cases a 1037C article that appears to be purely a definition can be converted into a viable stub with only small changes in wording. All of the 1037C articles started out in dicdef form, since 1037C is a glossary. A substantial number of non-trivial 1037C articles are now incorporated into Wikipedia; insubstantial articles, and articles which contain copyrighted material, should not be copied into Wikipedia. Often several unviable 1037C articles on closely-related terms can be merged together to form a viable stub that covers the related area of telecommunications technology.

Articles that should be kept, but which need work
Many of these articles are viable stubs (even if they are written in dicdef form). Most have hyperlinks to other articles, but these are often inappropriate. Please check links for correctness, make more links, and rephrase viable articles in encyclopedic form. Add appropriate stub tags and categories. Watch for opportunities to move articles from large categories like category:telecommunications into appropriate subcategories.

Articles that have been expanded
If an article has been expanded beyond the original 1037C dictionary definition and become a true Wikipedia article, please delete the link to that article from this page, so it will no longer need to be checked.

The template FS1037C lists the information source for use in References sections, and puts the article in Category:Wikipedia articles incorporating text from the Federal Standard 1037C.

FS1037C MS188 is for articles that contain content from this standard and/or MIL-STD-188.

ADP/AIS/MIS
automated information system (AIS) -- automatic data handling (ADH) -- automatic data processing (ADP) -- automatic data processing equipment (ADPE) -- batch processing -- clearing -- fetch protection -- FIP equipment -- hardware -- information -- information system -- machine-independent -- management information system (MIS) -- man-machine system -- online computer system -- penetration -- recovery procedure -- remote access data processing -- remote batch entry -- remote batch processing -- remote job entry (RJE) -- Remote Operations Service Element protocol (ROSE) -- security filter -- security kernel -- standby -- system administration -- system analysis -- system documentation -- system integration -- system integrity -- system management -- systems design -- technical vulnerability -- trusted computing base (TCB) -- trusted computer system (TCS) -- user -- validation -- work station

Antennas
Federal Standard 1037C terms/antenna terms

Codes/Coding
Federal Standard 1037C terms/coding terms

Computer Graphics
Federal Standard 1037C terms/computer graphics terms

Computer Hardware
Federal Standard 1037C terms/computer hardware terms

Computer Programming/Languages/Software
Federal Standard 1037C terms/computer programming terms

Control/Error Correction/Handshaking
acknowledge character (ACK) -- ARQ -- backward channel -- backward signal -- backward supervision -- BCH code -- block check -- block parity -- call control character -- call control signal -- cancel character (CAN) -- carrier sense multiple access (CSMA) -- channel bits -- character -- character check -- character interval -- check bit -- check character -- check digit -- checksum -- clear confirmation signal -- command -- command frame -- command menu -- command protocol data unit -- common-channel signaling -- connection-in-progress signal -- control character -- control communications -- control operation -- convolutional code -- cyclic redundancy check (CRC) -- data link escape character (DLE) -- data transfer request signal -- DCE clear signal -- DCE waiting signal -- delimiter -- disabling tone -- end-of-medium character -- end-of-selection character -- end-of-text character (ETX) -- end-of-transmission-block character (ETB) -- end-of-transmission character (EOT) -- enquiry character (ENQ) -- error control -- error-correcting code -- error-correcting system -- error-detecting code -- error-detecting system -- flag -- forward error correction (FEC) -- Hagelbarger code -- Hamming code -- handshaking -- idle character -- longitudinal redundancy check (LRC) -- negative-acknowledge character (NAK) -- nontransparent mode -- overhead information -- password -- pilot -- process computer system -- process control -- process control equipment -- process control system -- ready-for-data signal -- redundancy -- redundancy check -- residual error ratio -- respond opportunity -- response -- Shannon limit -- source quench -- start signal -- substitute character (SUB) -- summation check -- synchronous idle character (SYN) -- transverse parity check -- undetected error ratio -- who-are-you character (WRU)

Distortion/Dispersion/Diffraction
amplitude-vs.-frequency distortion -- bias distortion -- characteristic distortion -- cyclic distortion -- degree of isochronous distortion -- degree of start-stop distortion -- dispersion-limited operation -- distortion-limited operation -- end distortion -- feeder echo noise -- fortuitous distortion -- intermodulation distortion -- intramodal distortion -- isochronous distortion -- knife-edge effect -- margin -- multimode distortion -- phase-frequency distortion -- quantizing distortion -- signal droop -- single-harmonic distortion -- start-stop distortion

Encryption/Decryption
Federal Standard 1037C terms/telecommunications encryption terms

Facsimile
Federal Standard 1037C terms/fax terms

Fiber Optics
Federal Standard 1037C terms/fiber optic terms

Filters
Federal Standard 1037C terms/telecommunications filter terms

Frequency
aircraft emergency frequency -- automatic frequency control (AFC) -- band -- barrage jamming -- calling frequency -- carrier frequency -- channel offset -- guarded frequency -- hold-in frequency range -- image frequency -- image rejection ratio -- insertion-loss-vs.-frequency characteristic -- intermediate frequency (IF) -- lock-in frequency -- lock-in range -- lowest usable high frequency (LUF) -- maximum keying frequency -- maximum modulating frequency -- military common emergency frequency -- natural frequency -- nominal bandwidth --  notch -- occupied bandwidth -- precise frequency -- preemphasis -- primary frequency -- primary frequency standard -- primary service area -- priority -- protected frequency -- pull-in frequency range -- pulse repetition rate -- pump frequency -- reference frequency -- secondary frequency standard -- single-frequency signaling (SF) -- single-tone interference -- slew -- spectrum signature -- spurious emission -- standard test tone -- standard time and frequency signal service (STFS) -- stereophonic sound subcarrier -- stopband -- syntonization -- threshold frequency -- transition frequency -- virtual carrier frequency -- wideband

Frequency Allocation/Assignment
allotment (of a radio frequency or radio frequency channel) -- assigned frequency -- assigned frequency band -- assignment (of a radio frequency or radio frequency channel) -- authorized bandwidth -- authorized frequency -- frequency assignment -- frequency assignment authority

Gain
absolute gain -- antenna gain-to-noise-temperature (G/T) -- directive gain -- diversity gain -- equal gain combiner -- fade margin -- height gain -- insertion gain -- loop gain -- net gain -- process gain -- signal processing gain -- singing margin -- singing point

Interfacing
cell relay -- data station -- data transmission circuit -- demarcation point (demarc) -- dial mode -- DTE clear signal -- EIA interface -- framed interface -- gateway -- interchange circuit -- interexchange carrier (IXC) -- interface -- interface functionality -- interface message processor (IMP) -- interface payload -- interface standard -- medium interface point (MIP) -- net radio interface (NRI) -- network interface -- network interface device (NID) -- network termination 1 (NT1) -- network termination 2 (NT2) -- optical interface -- point of interface (POI) -- point of presence (POP) -- POSIX -- primary rate interface (PRI) -- protocol translator -- R interface -- router -- service -- service access point (SAP) -- service data unit (SDU) -- S interface -- terminal adapter -- T-interface -- transparent interface -- T reference point -- U interface -- V reference point

Interference
adjacent-channel interference -- anti-interference -- blanketing -- co-channel interference -- common-mode interference -- common-mode rejection ratio (CMRR) -- compatibility -- conducted interference -- differential mode interference -- electromagnetic interference (EMI) -- eye pattern -- far-end crosstalk -- FM blanketing -- harmful interference -- interaction crosstalk -- interference -- interference emission -- interference filter -- intersymbol interference -- jamming margin -- jamming to signal ratio (J/S) -- limits of interference -- optical interface -- permissible interference -- phase interference fading -- precipitation static (p-static) -- reradiation -- single-frequency interference -- single-tone interference -- sunspot -- white area

Internet
directed broadcast address -- Terminal Access Controller (TAC)

Loss/Attenuation
absorption coefficient -- absorption index -- absorption loss -- angular misalignment loss -- antenna dissipative loss -- area loss -- attenuation -- attenuation coefficient -- attenuation constant -- attenuation-limited operation -- attenuator -- bridging loss -- cloud attenuation -- coupling loss -- cutoff attenuator -- differential mode attenuation -- free-space loss -- gap loss -- gap-loss attenuator -- insertion loss -- insertion-loss-vs.-frequency characteristic -- lateral offset loss -- loss -- lossy medium -- macrobend loss -- modal loss -- net loss -- net loss variation -- numerical aperture loss -- precipitation attenuation -- preemphasis -- proration -- reflection loss -- scattering loss -- selective fading -- shadow loss -- splice loss -- transmission loss -- via net loss (VNL)

Modems
modem patch -- narrowband modem -- wideband modem

Modulation
absorption modulation -- adaptive differential pulse-code modulation (ADPCM) -- amplitude modulation (AM) -- angle modulation -- bandwidth (BW) -- baseband -- baseband modulation -- binary modulation -- bit-by-bit asynchronous operation -- carrier shift -- center frequency -- chip rate -- chirping -- code-division multiple access (CDMA) -- coherent differential phase-shift keying (CDPSK) -- conditioned diphase modulation -- continuously variable slope delta modulation (CVSD) -- Costas loop -- cross modulation -- delta modulation (DM) -- delta-sigma modulation -- demand assignment multiple access (DAMA) -- demodulation -- differential modulation -- differential phase-shift keying (DPSK) -- differential pulse-code modulation (DPCM) -- digital frequency modulation -- digital modulation -- digital phase modulation -- direct-sequence modulation -- disparity -- double modulation -- electro-optic modulator -- exalted-carrier reception -- fixed-reference modulation -- frequency modulation (FM) -- frequency-shift keying (FSK) -- full modulation -- incremental phase modulation (IPM) -- indirect control -- intensity modulation (IM) -- isochronous demodulation -- isochronous modulation -- keying -- load capacity -- low-level modulation -- maximum modulating frequency -- mechanically induced modulation -- modulation -- multicarrier modulation (MCM) -- overmodulation -- percentage modulation -- phase deviation -- phase modulation (PM) -- phase-shift keying (PSK) -- preemphasis improvement -- preemphasis network -- pseudorandom noise -- pulse-amplitude modulation (PAM) -- pulse-code modulation (PCM) -- pulse-duration modulation (PDM) -- pulse-frequency modulation (PFM) -- pulse-position modulation (PPM) -- quadrature amplitude modulation (QAM) -- quadrature modulation -- quadrature phase-shift keying (QPSK) -- quantization -- quasi-analog transmission -- radio -- reduced carrier single-sideband emission -- reduced carrier transmission -- signal transition -- significant condition -- single-sideband emission (SSB) -- single-sideband equipment reference level (SSB) -- single-sideband suppressed carrier transmission (SSB-SC) -- start-stop margin -- start-stop modulation -- stereophonic crosstalk -- sub-band adaptive differential pulse code modulation (SB-ADPCM) -- subcarrier -- supergroup distribution frame (SGDF) -- suppressed carrier transmission -- thin-film optical modulator -- unbalanced modulator -- vestigial sideband transmission (VSB) -- white facsimile transmission

Multiplexing
asynchronous time-division multiplexing (ATDM) -- asynchronous transfer mode (ATM) -- carrier system -- cell relay -- channel bank -- common-channel interoffice signaling (CCIS) -- demultiplexing -- D-4 -- digital multiplexer -- digital multiplex hierarchy -- digital signal (DS) -- digroup -- drop and insert -- erect position -- fractional T1 -- frame -- framing -- group -- group distribution frame (GDF) -- heterogeneous multiplexing -- homogeneous multiplexing -- inverse multiplexer -- inverted position -- labeled multiplexing -- master frequency generator -- multicarrier modulation (MCM) -- multichannel -- multiframe -- multiplex aggregate bit rate -- multiplex baseband -- multiplexer-demultiplexer (muldem) -- multiplexer (MUX) -- multiplex hierarchy -- multiplexing (MUXing) -- multiplex link encryption -- orthogonal multiplex -- precombining -- pregroup combining -- quadruple diversity -- space-division multiplexing -- statistical multiplexing -- statistical time-division multiplexing -- supergroup distribution frame (SGDF) -- synchronous TDM -- synchronous transfer mode -- system loading -- T-carrier -- thin-film optical multiplexer -- time-division multiple access (TDMA) -- time-division multiplexing (TDM) -- transmultiplexer -- trunk group multiplexer (TGM) -- two-pilot regulation -- wavelength-division multiplexing (WDM) -- frequency division multiplexing (FDM)

Networks and networking
Federal Standard 1037C terms/telecommunication network terms

NS/EP
assignment -- communications survivability -- interoperability -- National Communications System (NCS) -- National Coordinating Center for Telecommunications (NCC) -- NS/EP telecommunications -- priority level -- priority level assignment -- private NS/EP telecommunications services -- provisioning -- public switched NS/EP telecommunications services -- service identification -- Telecommunications Service Priority service (TSP) -- Telecommunications Service Priority system (TSP)

Organizations
AFNOR -- Joint Telecommunications Resources Board (JTRB) -- National Exchange Carrier Association -- National Coordinating Center for Telecommunications (NCC) -- public utilities commission (PUC) -- Radio Regulations Board (formerly IFRB) -- recognized operating agency (ROA) -- specialized common carrier (SCC) -- Verband Deutscher Electrotechniker (VDE)

PCS/UPT/cellular mobile
base station -- call associated signaling (CAS) -- call management -- cell -- cellular mobile -- fixed access -- interworking functions -- mobile services switching center (MSC) -- non-call associated signaling (NCAS) -- non-fixed access -- PCS -- PCS switching center -- PCS System -- personal mobility -- personal registration -- personal terminal -- public land mobile network (PLMN) -- radio interface -- service access -- terminal mobility -- terminal mobility management -- Universal Personal Telecommunications service (UPT) -- UPT access code -- validation -- wireless access mode -- wireless mobility management -- wireless terminal

Power
carrier power (of a radio transmitter) -- carrier-to-receiver noise density (C /kT ) -- radiation efficiency -- rated output power -- relative transmission level -- rf power margin -- sensitivity -- signal level -- signal-to-crosstalk ratio -- SINAD -- singing margin -- single-polarized antenna -- single-sideband equipment reference level (SSB) -- susceptibility threshold -- system loading

Power (Electrical)
demand factor -- demand load -- disconnect switch -- nonoperational load -- operational load -- power budget -- power failure transfer -- primary distribution system -- primary power -- primary substation -- protector -- station load -- technical load

Protocols
acknowledgement -- Advanced Data Communication Control Procedures (ADCCP) -- binary synchronous communication (bi-sync) -- Common Management Information Protocol (CMIP) -- connection-oriented data transfer protocol -- disconnect command (DISC) -- facility -- GOSIP -- high-level data link control (HDLC) -- LAP-D -- link protocol -- mode -- Open Systems Interconnection Specification (OSI) -- protocol-control information -- protocol converter -- protocol data unit (PDU) -- protocol translator -- Remote Operations Service Element protocol (ROSE) -- response PDU -- segment -- slot (communications) -- synchronous data link control (SDLC)

Radio
adaptive radio -- airborne radio relay -- air-ground radiotelephone service -- allcall -- amateur service -- anycall -- atmospheric noise -- automated radio -- automatic link establishment (ALE) -- automatic message exchange (AME) -- automatic sounding -- brick -- broadcasting-satellite service -- broadcasting satellite space station -- broadcasting service -- broadcasting station -- broadcast operation -- capture effect -- carrier synchronization -- cellular mobile -- clear channel -- closed circuit -- combat-net radio (CNR) -- connectivity exchange (CONEX) -- controller -- cross-band radiotelegraph procedure -- coverage -- dead space -- deemphasis -- detector -- deviation ratio -- diffraction region -- digital selective calling (DSC) -- directed net -- direction finding -- discriminator -- distance measuring equipment (DME) -- diversity reception -- diversity transmission -- duplex operation -- emergency locator transmitter (ELT) -- emergency position-indicating radiobeacon station -- emphasis -- feeder link -- FM blanketing -- FM improvement factor -- FM improvement threshold -- Fresnel zone -- harmful interference -- heterodyne repeater -- homing -- horn -- indefinite call sign -- inside plant -- k-factor -- link -- linking protection (LP) -- link quality analysis (LQA) -- maximum usable frequency (MUF) -- meaconing -- mean power of a radio transmitter -- medium -- message heading -- message part -- meteor burst communications -- multi-satellite link -- narrowband radio voice frequency (NBRVF) -- near-vertical-incidence skywave -- net control station (NCS) -- net operation -- net radio interface (NRI) -- off-the-air -- off-the-air monitoring -- on-the-air -- path -- PBER -- PCS -- peak envelope power (PEP, pX, PX of a radio transmitter) -- pilot -- precipitation static (p-static) -- preemphasis -- preemphasis improvement -- preemphasis network -- preliminary call -- primary service area -- propagation mode -- propagation path obstruction -- protection interval (PI) -- push-to-talk operation -- quadruple diversity -- query call -- radiation -- radio -- radio and wire integration (RWI) -- radio channel -- radio common carrier (RCC) -- radiocommunication -- random access discrete address (RADA) -- reflecting layer -- rural radio service -- rural subscriber station -- scan-stop lockup -- ship Earth station -- shortwave -- smooth Earth -- sounding -- sporadic E propagation -- spurious response -- stereophonic sound subcarrier -- stressed environment -- sudden ionospheric disturbance (SID) -- sunspot -- surface wave -- tail circuit -- terrestrial radiocommunication -- terrestrial station -- transmitter power output rating -- traveling wave -- TRI-TAC equipment -- vestigial sideband transmission (VSB) -- white area -- wildcard character

Routing
adaptive routing -- alternate routing -- avoidance routing -- call tracing -- circuit routing -- circuit switching unit (CSU) -- collective routing -- destination routing -- deterministic routing -- dynamically adaptive routing -- flood search routing -- free routing -- heuristic routing -- hierarchical routing -- hybrid routing -- mediation function -- multicast address -- network administration -- primary route -- rerouting -- route -- route diversity -- route matrix -- routing -- sender -- spill-forward feature -- spur

Satellites
acquisition -- active satellite -- aeronautical mobile-satellite service -- aeronautical mobile-satellite off-route service (OR) -- aeronautical mobile-satellite route service (R) -- amateur-satellite service -- apogee -- broadcasting-satellite service -- broadcasting satellite space station -- carrier-to-receiver noise density (C /kT ) -- C-Band -- chip -- coast Earth station -- communications satellite -- community reception in the broadcasting-satellite service -- coordination area -- cross-site link -- direct orbit -- downlink (D/L) -- dual access -- Earth coverage -- Earth exploration-satellite service -- Earth station -- Earth terminal -- Earth terminal complex -- equatorial orbit -- equivalent satellite link noise temperature -- fixed-satellite service -- footprint -- geostationary orbit -- geosynchronous orbit -- handoff -- inclination of an orbit (of an Earth satellite) -- inclined orbit -- individual reception in the broadcasting-satellite service -- inter-satellite service -- land mobile-satellite service -- maritime mobile-satellite service -- meteorological-satellite service -- mobile Earth station -- multiple access -- multi-satellite link -- orbit -- orbit determination -- passive satellite -- periapsis -- perigee -- period of a satellite -- polar orbit -- preassignment access plan -- pulse-address multiple access (PAMA) -- radiodetermination-satellite service -- radionavigation-satellite service -- resource controller (RC) -- retrograde orbit -- satellite -- ship Earth station -- space subsystem -- spacecraft -- space operation service -- space radiocommunication -- space research service -- space system -- space telecommand -- space tracking -- spot beam -- standard frequency and time signal-satellite service -- synchronous orbit -- synchronous satellite -- tail circuit -- uplink (U/L) -- view

Security
access -- anti-jam -- anti-spoof -- authenticate -- authentication -- authenticator -- automated information systems security -- between-the-lines entry -- BLACK -- BLACK signal -- browsing -- bug -- certification -- clipper chip -- code -- communications deception -- communications-electronics (C-E) -- communications intelligence (COMINT) -- communications protection -- communications security (COMSEC) -- compromise -- computer security (COMPUSEC) -- COMSEC equipment -- configuration management -- controlled area -- controlled security operation -- controlled space -- data security -- electronic emission security -- emanations security (EMSEC) -- emission security -- end-to-end security -- environmental security -- information security -- information systems security (INFOSEC) -- label -- limited protection -- monitoring -- NAK attack -- operations security -- password -- penetration -- privacy -- scrambler -- secure communications -- secure transmission -- security -- security filter -- security kernel -- security management -- self-authentication -- sensitive information -- server -- signals security -- transmission security key (TSK) -- trusted computing base (TCB) -- trusted computer system (TCS) -- Warner exemption

Services and Service Features
Federal Standard 1037C terms/telecommunication service terms

Standards
ANSI/EIA/TIA-568 -- ASCII -- basic mode link control -- basic rate interface (BRI) -- de facto standard -- frequency standard -- functional profile -- GOSIP -- group -- industry standard -- interface standard -- International Telegraph Alphabet Number 5 (ITA-5) -- interoperability standard -- message handling system (MHS) -- National Electrical Code® (NEC) -- network terminal number (NTN) -- NTSC standard -- Open Systems Interconnection (OSI) -- Open Systems Interconnection (OSI)--architecture -- Open Systems Interconnection Specification (OSI)--Protocol -- Open Systems Interconnection--Reference Model (OSI--RM) -- Open Systems Interconnection Definitions (OSI)--Service -- Open Systems Interconnection Management (OSI)--Systems -- POSIX -- precise frequency -- primary frequency standard -- proprietary standard -- p & -- quarter common intermediate format (QCIF) -- R interface -- rubidium clock -- rubidium standard -- secondary frequency standard -- secondary time standard -- serial -- Signaling System No. 7 (SS7) -- SONET -- standard -- standard optical source -- standard time and frequency signal service (STFS) -- system standard -- terminal adapter -- time standard -- V-series Recommendations -- X.-series Recommendations

Storage
accumulator -- archiving -- arithmetic overflow -- arithmetic register -- arithmetic underflow -- associative storage -- auxiliary storage -- buffer -- cache memory -- CD-ROM -- channel -- clear -- computer program origin -- direct access -- direct address -- diskette -- disk pack -- disk sector -- elastic buffer -- erase -- field -- file -- file transfer, access, and management (FTAM) -- hard sectoring -- head -- interblock gap -- internal memory -- loader -- machine-readable medium -- magnetic card -- magnetic core storage -- magnetic drum -- magnetic tape -- main storage -- medium -- memory -- off-line storage -- optical disk -- overlay -- overload -- packing density -- permanent storage -- phase-encoded recording (PE) -- phase flux reversal -- print-through -- programmable read-only memory (PROM) -- queue -- queue traffic -- queuing -- random access memory (RAM) -- read head -- reading -- read-only memory (ROM) -- read-only storage -- record -- record communication -- record information -- record medium -- regeneration -- register -- rotational position sensing -- sectoring -- seek -- seek time -- shift register -- simple buffering -- skew -- soft sectoring -- spooling -- storage -- storage cell -- store-and-forward (S-F) -- store-and-forward switching center -- streaming tape drive -- streaming tape recording -- tag image file format (TIFF) -- tape relay -- track -- track density -- tracking error -- variable length buffer -- virtual memory -- virtual storage -- volatile storage -- volume -- work space -- write

Synchronization
bilateral synchronization -- carrier synchronization -- digital synchronization -- double-ended synchronization -- frame synchronization -- linear analog synchronization -- lip synchronization -- mutually synchronized network -- mutual synchronization -- nonsynchronous data transmission channel -- pilot -- single-ended synchronization -- synchronism -- synchronization -- synchronization bit -- synchronization code -- synchronization pulse -- synchronous -- timing tracking accuracy -- unilateral synchronization system

Telegraphy
A-condition -- Baudot code -- cable -- chad tape -- characteristic distortion -- character-stepped -- common battery -- double-frequency shift keying (DFSK) -- end distortion -- equal-length code -- frequency-shift telegraphy -- internal bias -- local battery -- mark -- narrative traffic -- neutral direct-current telegraph system -- neutral operation -- polar direct-current telegraph transmission -- polarential telegraph system -- polar operation -- push-to-type operation -- radiotelegram -- radio telegraphy -- record communication -- reperforator -- sending-end crossfire -- space -- tape relay -- telegram -- telegraphy -- teleprinter -- teletypewriter (TTY) -- terminal equipment -- tone diversity -- TTY/TDD -- twinplex -- two-tone keying -- voice-frequency telegraph (VFTG) -- word

Telephony
Federal Standard 1037C terms/telephony terms

Television
advanced television (ATV) -- aspect ratio -- cable TV (CATV) -- cable television relay service station (CARS) -- chroma keying -- chrominance signal -- closed captioning -- closed circuit -- composite video -- distribution-quality television -- extended-definition television (EDTV) -- fixed microwave auxiliary station -- freeze frame television -- full-motion operation -- ghost -- head end -- high-definition television (HDTV) -- improved-definition television (IDTV) -- lip synchronization -- minimum picture interval -- PAL -- PAL-M -- picture black -- picture white -- raster -- reference black level -- reference white level -- RGB -- scanning -- SECAM -- studio-to-transmitter link (STL) -- television (TV) -- video

Time/Timing
absolute delay -- cesium clock -- channel time slot -- coasting mode -- coherence time -- coordinated clock -- coordinated time scale -- data transfer time -- date-time group (DTG) -- dating format -- DoD master clock -- equipment clock -- external timing reference -- false clock -- heterochronous -- hierarchically synchronized network -- homochronous -- independent clocks -- indirect control -- isochronous -- isochronous demodulation -- isochronous modulation -- isochronous signal -- local clock -- master clock -- master-slave timing -- mesochronous -- mutually synchronized network -- mutual synchronization -- near real time -- nodal clock -- nonsynchronous network -- oligarchically synchronized network -- plesiochronous -- precise time -- precise time and time interval (PTTI) -- primary time standard -- principal clock -- protection interval (PI) -- pull-in frequency range -- reference clock -- release time -- remote clock -- secondary time standard -- slave clock -- standard frequency and time signal-satellite service -- standard frequency and time signal service -- standard frequency and time signal station -- standard time and frequency signal service (STFS) -- station clock -- synchronism -- synchronous network -- synchronous TDM -- time ambiguity -- time instability -- time interval error (TIE) -- time jitter -- time marker -- time of occurrence -- time-out -- timing recovery -- timing signal -- timing tracking accuracy -- transmit-after-receive time delay -- transmitter attack-time delay -- transmitter release-time delay -- uniform time scale -- unit interval

Traffic
activity factor -- adaptive channel allocation -- busy hour -- busy season -- calling rate -- call-second -- connections per circuit hour (CCH) -- directionalization -- Frequency of Optimum Transmission (FOT) -- frequency prediction -- grade of service (GOS) -- group busy hour (GBH) -- high-usage trunk group -- holding time -- interconnect facility -- line traffic coordinator (LTC) -- loading -- minimize -- narrative traffic -- net control station (NCS) -- off-line recovery -- overflow -- queue -- queue traffic -- queuing -- record traffic -- scanning -- short haul toll traffic -- switch busy hour -- traffic

Transmission and Transmission lines
Federal Standard 1037C terms/telecommunications transmission terms

Video
average picture level (APL) -- block distortion -- blurring -- color errors -- continuous presence -- contrast -- control field -- edge busyness -- error blocks -- field -- frame -- freeze frame -- image -- interlaced scanning -- jerkiness -- mosquito noise -- motion compensation -- motion response degradation -- motion video -- object -- object persistence -- object retention -- panning -- p & -- quarter common intermediate format (QCIF) -- scene cut -- scene cut response -- smearing -- spatial application -- spatial edge noise -- still image -- still video -- temporal application -- temporal edge noise -- transmission service channel -- windowing

Waves
coherence area -- guided wave -- indirect wave -- left-hand polarized wave (anti-clockwise) -- material scattering -- polarization diversity -- propagation -- pulse carrier -- radio beam -- reflection loss -- right-hand polarized wave (clockwise) -- signature -- spurious response -- tropospheric wave -- waveguide scattering -- wavelength stability -- wave trap

Other
attack time -- vox

Orphans
Access charge -- Aeronautical Emergency Communications System Plan -- Adaptive communications -- Adder-subtracter -- Address message -- AIOD leads -- Air-ground worldwide communications system -- Alarm sensor -- Alternate party -- Area broadcast shift -- Arithmetic shift -- Articulation score -- Asynchronous communications system -- Audible ringing tone -- Audio response unit -- Automatic call distributor -- Automatic callback -- Automatic switching system -- Back-to-back connection -- Balance return loss -- Bandwidth compression -- Bit-count integrity -- Bit-sequence independence -- Bit inversion -- Bit slip -- Bit synchronous operation -- Black noise -- Blind transmission -- Block check character -- Bridge-to-bridge station -- Call-sign allocation plan -- Call collision -- Call delay -- Call duration -- Call processing -- Call set-up time -- Camp-on busy signal -- Carson bandwidth rule -- Centrex service -- Channel reliability -- Character-count integrity -- Circuit reliability -- Circuit restoration -- Circulator -- Clear message -- Closed-loop transfer function -- Closed waveguide -- Coded set -- Command and control warfare -- Commonality -- Communications blackout -- Communications jamming -- Communications subsystem -- Communications system engineering -- Companding -- Compatible sideband transmission -- Computer conferencing -- Computer network operating system -- Conduction band -- Conference operation -- Configuration control -- Conservation of radiance -- Control of electromagnetic radiation -- Convoy internal communications -- Cryptochannel -- Curve-fitting compaction -- DOD master clock -- Data access arrangement -- Data bank -- Data element -- Data forwarder -- Data service unit -- Decollimation -- Dejitterizer -- Demand assignment -- Desensitation -- Design objective -- Dielectric strength -- Digital milliwatt -- Disengagement originator -- Distributed-queue dual-bus network -- Disturbance voltage -- Dropout -- Dual in-line package -- Duplexer -- Effective data transfer rate -- Effective transmission rate -- Efficiency factor -- Electro-optic effect -- Electro-optics -- Electromagnetic interference control -- Electromagnetic radiation and health -- Electromagnetic survivability -- Electronic deception -- Electronic warfare support measures -- Endurability -- Exempted addressee -- Extended superframe -- Extinction ratio -- FCC registration program -- Facsimile converter -- Fading distribution -- Fall time -- Flywheel effect -- Foreign instrumentation signals intelligence -- Forward echo -- Four-wire circuit -- Four-wire terminating set -- Frame slip -- Framing bit -- Frequency-exchange signaling -- Frequency averaging -- Frequency compatibility -- Frequency frogging -- Frequency sharing -- Frequency shift -- Gaussian beam -- Ground constants -- Ground loop -- High-performance equipment -- Hop count -- Hybrid balance -- Identification, friend or foe -- Injection laser diode -- Interchangeability -- Inverse-square law -- Ionospheric sounding -- Justify -- Kerr electro-optic effect -- Key pulsing -- Lambert's cosine law -- Loading characteristic -- Loading coil -- Local call -- Lockout (telecommunication) -- Long-haul communications -- Long-term stability -- Longitudinal voltage -- Low-performance equipment -- Low-power communication device -- Magneto-optic effect -- Maintainability -- Maximal-ratio combiner -- Maximum user signaling rate -- Mean time between outages -- Medium-power talker -- Message format -- Modulation factor -- Multiport repeater -- Nuclear hardness -- Nyquist rate -- Operating time -- Operational service period -- Optical attenuator -- Optical density -- Optical switch -- Out-of-band signaling -- Output rating -- Packet-switching node -- Par meter -- Password length equation -- Password length parameter -- Path quality analysis -- Phantom circuit -- Phase inversion -- Photocurrent -- Planck's law -- Proceed-to-select -- Psophometric voltage -- Pulsating direct current -- Pulse link repeater -- Quasi-analog signal -- Radio equipment -- Radio fix -- Radiometry -- Randomizer -- Receive-after-transmit time delay -- Receiver attack-time delay -- Recorder warning tone -- Reference circuit -- Reflectivity -- Reframing time -- Repeating coil -- Ringaround -- Ringback signal -- Ringdown -- Ringer equivalency number -- Round-trip delay time -- Schematic -- Second dialtone -- Separate channel signaling -- Serial access -- Simplex circuit -- Simplex signaling -- Slant range -- Slave station -- Specific detectivity -- Speckle pattern -- Speed of service -- Standard telegraph level -- Standard test signal -- Steady-state condition -- Tactical communications system -- Teletraining -- Ternary signal -- Thermodynamic temperature -- Third-order intercept point -- Time-assignment speech interpolation -- Tactical data information link--A -- Time-domain reflectometer -- Time code ambiguity -- Toll switching trunk -- Traffic-flow security -- Transmission coefficient -- Transmit flow control -- Turnkey -- UPT environment -- UPT service profile -- User information bit -- Video teleconferencing unit -- Virtual call capability