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| IP IPC IPX IR irradiance irradiation ISB ISDN ISM ISO isochrone isochronous isochronous burst transmission isochronous demodulation isochronous distortion isochronous modulation isochronous signal isolator isotropic isotropic antenna isotropic gain iterative impedance ITU ITU-R ITU-T IVDT IXC jabber jacket jamming margin jamming to signal ratio (J/S) jam signal jerkiness jitter job job-recovery control file Johnson noise joint joint multichannel trunking and switching system Joint Spectrum Center (JSC) Joint Tactical Information Distribution System (JTIDS) Joint Telecommunications Resources Board (JTRB) journal joy stick JSC JTIDS JTRB Julian date jumper junction point justification justify K Kalman filter KDC kelvin (K) kelvin temperature scale Kendall effect Kennelly-Heaviside layer kernel Kerr electro-optic effect key keyboard keyboard punch key distribution center (KDC) keying keying variable key management key pulsing keypunch key set key stream key telephone system (KTS) key variable k-factor kHz kilohertz (kHz) kilometer km knife-edge effect k T KTS K-type patch bay label labeled channel labeled interface structure labeled multiplexing labeled statistical channel Lambertian radiator Lambertian reflector Lambertian source Lambert's cosine law Lambert's emission law LAN LAN application (software) land line land mobile-satellite service land mobile service land mobile station landscape mode land station language language processor LAN operating system LAP-B LAP-D laser laser chirp laser diode laser disk laser intelligence (LASINT) laser medium lasing lasing threshold LASINT last-in first-out (LIFO) LATA lateral offset loss launch angle launching fiber launch numerical aperture (LNA) layer layered system lay length LBO LCD LDM leaky bucket counter leaky mode leaky ray leap second leased circuit least-time principle LEC LED left-hand (anti-clockwise) polarized wave leg level level alignment LF LIFO light light-emitting diode (LED) lightguide lightning down-conductor lightning protection subsystem light pen light valve limited protection limited-protection voice equipment limiter
minimum discernable signal (MDS)
modulator
mouse |
limiter circuit limiting limits of interference line line adapter circuit linear analog control linear analog synchronization linear combiner linear device linearity linearly polarized (LP) mode linear network linear optimization linear polarization linear predictive coding (LPC) linear programming (LP) linear topology line balance line buildout (LBO) line code line driver line filter balance line hit line load control line loop line-of-sight (LOS) propagation line-route map line side line source line spectrum line speed line-to-line correlation line traffic coordinator (LTC) line verification linewidth link link encryption linking protection (LP) Link Layer link level link orderwire link protocol link quality analysis (LQA) lip synchronization liquid crystal display (LCD) LLC LNA load load capacity loader load factor loading loading characteristic loading coil lobe lobe attaching unit local access and transport area (LATA) local area network (LAN) local battery local call local central office local clock local exchange local exchange carrier (LEC) local exchange loop local line local loop local measured service local office local orderwire local side lock-in frequency lock-in range lockout log logical circuit logical link control (LLC) sublayer logical route logical signaling channel logical topology log in login log off log-off logon log on log out log-periodic (LP) antenna log-periodic (LP) array long-distance call long-haul communications longitudinal balance longitudinal offset loss longitudinal redundancy check (LRC) longitudinal voltage long line long-range aid to navigation (loran) system long-range radio aid to navigation system long-term stability long wavelength look-ahead-for-busy (LFB) information loop loop-back loop check looped dual bus loop filter loop gain loop noise loop start loop test loop transmission loose buffer loran loran station LOS loss lossy medium lost block lost call lower frequency ground lowest usable high frequency (LUF) low frequency (LF) low-level keying low-level language low-level modulation low-level signaling low-pass filter low-performance equipment low-power communication device LP L-pad LPC LP mode LP 01 mode LQA LRC LSB LTC LUF luminescent diode lynx MAC machine-independent machine instruction machine language machine learning machine-oriented language machine-readable medium machine word macrobend macrobend loss magnetic card
multiplexing (MUXing)
mode coupling
multicast |
magnetic circuit magnetic core storage magnetic disk magnetic drum magnetic storm magnetic tape magneto-ionic double refraction magneto-optic magneto-optic effect mailbox-type facility main beam main distribution frame (MDF) main frame mainframe main lobe main station main storage maintainability maintenance maintenance control circuit (MCC) major lobe MAN managed object management information system (MIS) Manchester code mandrel wrapping man-machine system margin marine broadcast station marine utility station maritime air communications maritime broadcast communications net maritime mobile-satellite service maritime mobile service maritime radionavigation-satellite service maritime radionavigation service mark marker beacon marking bias marking end distortion marking pulse marking signal m -ary code m -ary signaling maser mask masked threshold master clock master frequency generator mastergroup master oscillator master-slave timing master station matched junction matching gel material absorption material dispersion material dispersion coefficient [ M ( )] material scattering maximal-ratio combiner maximum block transfer time maximum calling area maximum disengagement time maximum justification rate maximum keying frequency maximum modulating frequency maximum stuffing rate maximum usable frequency (MUF) maximum user signaling rate Maxwell's equations MCC MCM MDF meaconing mean power (of a radio transmitter) mean time between failures (MTBF) mean time between outages ( MTBO ) mean time to repair (MTTR) mean time to service restoral (MTSR) measured-rate service measurement period mechanically induced modulation mechanically intermateable connectors mechanical splice mediation function medium medium access control (MAC) sublayer medium access unit (MAU) medium frequency (MF) medium interface connector (MIC) medium interface point (MIP) medium-power talker megahertz (MHz) memory menu MERCAST merchant-ship broadcast system (MERCAST) meridional ray mesh network mesh topology mesochronous message message alignment indicator message broadcast message center message feedback message format message handling system (MHS) message heading message part message register leads message service message switching message toll service message transfer part message unit messaging service metallic circuit metallic voltage meteor burst communications meteorological aids service meteorological-satellite service metric system metropolitan area network (MAN) MF MFD MFJ MFSK MHS MHz MIC microbend microbending microbend loss microcircuit microcode microcomputer microfinishing film microinstruction micro-mainframe link microprocessor microprogram microwave (mw) Mie scattering mileage military common emergency frequency millimeter wave minicomputer minimize minimum bend radius mobile Earth station mobile-satellite service mobile service mobile services switching center (MSC) mobile station modal dispersion modal distortion modal distribution modal loss modal noise mode Modification of Final Judgment (MFJ) modified AMI code modular modular jack modulation modulation factor modulation index modulation rate modulation suppression multilevel modulation multilevel precedence and preemption (MLPP) multilink operation multimedia multimode dispersion multimode distortion multimode group delay multimode optical fiber multiparty line multipath multiple multiple access multiple call multiple frequency-shift keying (MFSK) |