Serial Infrared

- ac transmission
- analog transmission
- anisochronous transmission
- antivoice-operated transmission
- asymmetrical transmission
- asynchronous transmission
- audio transmission
- automatic transmission
- batch transmission
- batched transmission
- batteryless transmission
- binary-code transmission
- binary-synchronous transmission
- bipolar transmission
- bisynchronous transmission
- bit-interleaved transmission
- bit-parallel transmission
- bit-serial transmission
- bit-stream transmission
- black transmission
- black-facsimile transmission
- burst-isochronous transmission
- burst-modem transmission
- byte-serial transmission
- cable transmission
- carrier transmission
- character-interleaved transmission
- character-serial transmission
- circular transmission
- closed network transmission
- close-up transmission
- color facsimile transmission
- color transmission
- complete transmission
- constant-illuminance transmission
- constant-luminance transmission
- data transmission
- decade transmission
- delayed transmission
- digital voice transmission
- diplex-radio transmission
- direct transmission
- direct-current picture transmission
- direct-current transmission
- direct-television transmission
- disconnected stage transmission
- discontinuous transmission
- distortionless transmission
- diversity transmission
- document transmission
- dot-sequential transmission
- double-sideband transmission
- DSB transmission
- duplex transmission
- dynamic transmission
- edit-directed transmission
- encoded signals transmission
- error-free transmission
- errorless transmission
- facsimile transmission
- feedback transmission
- field sequential transmission
- free polling transmission
- frequency-division multiplex transmission
- frequency-shift transmission
- galvanic transmission
- half-cycle transmission
- half-duplex transmission
- headed transmission
- image transmission
- immediate transmission
- impaired transmission
- impulse transmission
- indirect transmission
- inductive transmission
- infrared-emission transmission
- isochronous transmission
- isochronous-burst transmission
- light transmission
- line-sequential transmission
- live transmission
- loop transmission
- memory transmission
- middle-band radiotelephone transmission
- mixed transmission
- mobile data transmission
- monochrome transmission
- multichannel transmission
- multifrequency transmission
- multilevel transmission
- multiple call transmission
- multiplex transmission
- natural transmission
- negative transmission
- neutral transmission
- noise transmission
- nonsimultaneous transmission
- nonsynchronous transmission
- normal confidential transmission
- oblique-incidence transmission
- optical transmission
- optical-waveguide transmission
- parallel transmission
- partial transmission
- photoradionewspaper transmission
- picture TV-transmission
- ping-pong transmission
- plesiochronous transmission
- point-to-point transmission
- polar transmission
- positive transmission
- pure transmission
- quasi-analog transmission
- radio-bulletin transmission
- recorded transmission
- reduced-carrier transmission
- regular transmission
- remote data transmission
- repetitive transmission
- satellite broadcast transmission
- secure transmission
- secured-polling transmission
- separate-phase transmission
- sequential color transmission
- serial bit transmission
- serial transmission
- simplex transmission
- simulcast transmission
- single-current transmission
- single-hop transmission
- single-side transmission
- soft handover transmission
- sound transmission
- space-radio transmission
- specular transmission
- split-screen transmission
- start-stop transmission
- stub transmission
- subscriber transmission
- suppressed-carrier transmission
- synchronous transmission
- television transmission
- text-message transmission
- transparent transmission
- turn-by-turn transmission
- two-hop transmission
- two-way simultaneous transmission
- unbounded transmission
- vestigial-sideband transmission
- wave transmission
- white transmission
- white-facsimile transmission
- wide-band transmission

- air-epi interface
- Apple desktop interface - broadband interface
- call-level interface
- cathode interface
- CD-ROM interface
- channel interface
- chatbot interface
- command interface
- command-line interface
- common gateway interface - composite video interface - computer-to-cassette interface - desktop management interface
- dielectric interface
- diffuse interface
- digital-multiplexed interface - electrical interface
- enhanced IDE interface - expansion interface
- fiber channel interface - flat panel interface
- FP interface
- friendly user interface
- front-end interface
- general circuit interface - hard disk interface
- hardware interface
- head-disk interface
- heterojunction interface
- high performance parallel interface
- human-computer interface
- human-machine interface
- iconic interface
- IDE interface
- infrared interface
- input/output interface
- integrated device electronics interface
- intelligent interface - inter-carrier interface - intuitive user interface - keyboard interface
- land interface
- layered interface - man-computer interface
- man-machine interface - mouse interface
- multiple document interface - Panasonic interface
- parallel interface
- peripheral interface - p-n junction interface
- physical interface
- planar interface
- plastic interface - processor interface
- processor-to-cassette interface
- program interface
- programmable interface
- programmable communications interface
- programmable peripheral interface
- radar-computer interface - RGB TTL interface
- RS232 interface
- RS232C interface
- RS-422 interface
- satellite interface
- scalable coherent interface - seed-melt interface
- serial interface
- serial communication interface
- serial communication interface plus
- serial peripheral interface - software interface
- Sony interface - standard interface
- status control interface
- studio interface
- subscriber-line interface - system interface
- system programming interface
- tape drive interface
- tape backup drive interface - transmitter-receiver interface - visual interface
- WIMP interface

- advanced SCSI programming interface
- advanced technology attachment packet interface
- advanced technology attachment software programming interface
- AES/EBU interface
- air-epi interface
- Apple desktop interface
- application binary interface
- application programming interface
- application transaction management interface
- attachment unit interface
- Audio Engineering Society/European Broadcasting Union interface
- audio interface
- baseband interface
- basic rate interface
- BlueTooth interface
- Borland graphic interface
- brain-machine interface
- broadband interface
- call-level interface
- cathode interface
- CD-ROM interface
- channel interface
- chatbot interface
- command interface
- command-line interface
- common gateway interface
- common programming interface for communications
- communication interface
- composite video interface
- computer graphics interface
- computer interface
- computer-to-cassette interface
- computer-to-PBX interface
- copper distributed data interface
- data trunk interface
- deposit-substrate interface
- desktop management interface
- dielectric interface
- diffuse interface
- digital-multiplexed interface
- direct driver interface
- display control interface
- DOS protected mode interface
- EIA interface
- electrical interface
- enhanced IDE interface
- enhanced integrated device electronics interface
- enhanced small disk interface
- epi-substrate interface
- expansion interface
- fiber channel interface
- fiber distributed data interface
- film-substrate interface
- flat panel interface
- FP interface
- friendly user interface
- front-end interface
- general circuit interface
- graphic device interface
- graphical user interface
- growth interface
- hard disk interface
- hardware interface
- head-disk interface
- heterojunction interface
- high performance parallel interface
- human-computer interface
- human-machine interface
- iconic interface
- IDE interface
- infrared interface
- input/output interface
- integrated device electronics interface
- intelligent instrumentation interface
- intelligent interface
- intelligent peripheral interface
- interactive interface
- inter-carrier interface
- Internet server application programming interface
- inter-network interface
- intuitive user interface
- Java naming and directory interface
- JTAG interface
- keyboard interface
- land interface
- layered interface
- license server application programming interface
- local distributed data interface
- local management interface
- logical interface
- man-computer interface
- man-machine interface
- media control interface
- medium dependent interface
- medium independent interface
- memory interface
- message passing interface
- messaging application programming interface
- Mitsumi interface
- mouse interface
- multiple document interface
- musical instrument digital interface
- network application programming interface
- network terminal interface
- network-to-network interface
- object-oriented interface
- open applications interface
- open data-link interface
- open prepress interface
- Panasonic interface
- parallel interface
- peripheral interface
- phantom interface
- physical interface
- planar interface
- plastic interface
- p-n interface
- p-n junction interface
- portable operating system interface
- primary rate interface
- processor interface
- processor-to-cassette interface
- program interface
- programmable communications interface
- programmable interface
- programmable peripheral interface
- radar-computer interface
- remote desktop management interface
- remote user interface
- RGB analog interface
- RGB TTL interface
- RS232 interface
- RS232C interface
- RS-422 interface
- satellite interface
- scalable coherent interface
- SCSA device programming interface
- SCSI parallel interface
- seed-melt interface
- serial communication interface plus
- serial communication interface
- serial interface
- serial peripheral interface
- server-requestor programming interface
- shielded distributed data interface
- slider-disk interface
- small computer system interface
- social user interface
- software interface
- Sony interface
- Sony/Philips digital interface
- speaker voice identification application programming interface
- speech application programming interface
- speech recognition application programming interface
- standard interface
- status control interface
- studio interface
- subscriber line acoustic processing interface
- subscriber-line interface
- superconducting-normal interface
- system interface
- system programming interface
- tape backup drive interface
- tape drive interface
- telephony application programming interface
- telephony server application programming interface
- terminal interface
- transmitter-receiver interface
- twisted-pair distributed data interface
- user interface
- usernetwork interface
- user-to-network interface
- virtual control program interface
- virtual device interface
- visual interface
- WIMP interface

- active detection
- active infrared detection
- active intrusion detection
- amplitude detection
- anode detection
- anomaly-driven intrusion detection
- asymptotically robust detection - blind-spot detection
- bubble detection
- burst-error detection
- cathode detection
- charge detection
- coherent detection
- coherent light detection
- collision detection
- computer-based intrusion detection
- correlation detection
- crack detection
- Doppler detection
- early detection
- edge detection
- envelope detection
- error detection
- failure detection
- flaw detection
- frequency detection
- full aperture collinear detection
- grid detection
- heterodyne detection
- holographic detection
- homodyne detection
- host-based intrusion detection
- hydrospace detection
- infrared detection - interferometrical detection
- intrusion detection
- linear detection
- magnetic anomaly detection
- magnetic bubble detection
- maximum-likelihood detection
- motion detection
- N-array detection
- network-based intrusion detection
- nonlinear detection
- null detection
- null-zone detection
- offset detection
- optical detection
- optical detection and ranging
- optical heterodyne detection
- over-the-horizon detection
- passive detection
- passive intrusion detection
- phase detection
- plate detection
- radar detection
- radio detection
- robust detection
- sequential cumulative detection
- serial presence detection
- signal detection
- signature-driven intrusion detection
- slope detection
- sonic flaw detection
- square-law detection
- stroke detection
- superheterodyne detection
- synchronous detection
- target detection
- threshold detection
- triple detection
- ultrasonic liquid-level detection
- variable-threshold detection
- video detection

- active infrared detection
- active intrusion detection
- amplitude detection
- anode detection
- anomaly-driven intrusion detection
- asymptotically robust detection
- beat-frequency detection
- binary detection
- blind-spot detection
- bubble detection
- burst-error detection
- cathode detection
- charge detection
- coherent detection
- coherent light detection
- collision detection
- computer-based intrusion detection
- correlation detection
- crack detection
- detection and ranging
- Doppler detection
- early detection
- edge detection
- envelope detection
- error detection
- failure detection
- flaw detection
- frequency detection
- full aperture collinear detection
- grid detection
- heterodyne detection
- holographic detection
- homodyne detection
- host-based intrusion detection
- hydrospace detection
- infrared detection
- infrared range and direction detection
- interference-detection
- interferometrical detection
- intrusion detection
- linear detection
- magnetic anomaly detection
- magnetic bubble detection
- maximum-likelihood detection
- motion detection
- N-array detection
- network-based intrusion detection
- nonlinear detection
- null detection
- null-zone detection
- offset detection
- optical detection and ranging
- optical detection
- optical heterodyne detection
- over-the-horizon detection
- passive detection
- passive intrusion detection
- phase detection
- plate detection
- radar detection
- radio detection
- robust detection
- sequential cumulative detection
- serial presence detection
- signal detection
- signature-driven intrusion detection
- slope detection
- sonic flaw detection
- square-law detection
- stroke detection
- superheterodyne detection
- synchronous detection
- target detection
- threshold detection
- triple detection
- ultrasonic liquid-level detection
- variable-threshold detection
- video detection

- audio output port
- balanced port
- Bi-Di port
- bidirectional port
- built-in mouse port
- Centronics port
- COM port
- communication port
- conjugate ports
- daisy-chainable port
- difference port
- digital port
- downstream port
- E-port
- enhanced bidirectional port
- enhanced parallel port - feed port
- floating port
- H-port
- infrared port
- input port
- input/output ports
- internally terminated port
- linear printer port
- locked port
- LPT port
- MIDI port
- MIDI/Game port
- motherboard mouse port
- mouse port - output port
- parallel port
- PS/2 port
- serial port
- serial input/output port
- standard parallel port
- sum port
- system port
- telephone service port
- test access port
- type 1 parallel port
- type 3 DMA parallel port
- unbalanced port
- upstream port
- view port
- well-known port

- accelerated graphics port
- analog port
- audio output port
- balanced port
- Bi-Di port
- bidirectional port
- built-in mouse port
- Centronics port
- COM port
- communication port
- conjugate ports
- daisy-chainable port
- difference port
- digital port
- downstream port
- enhanced bidirectional port
- enhanced parallel port
- E-port
- extended capability port
- fault detection port
- feed port
- floating port
- H-port
- infrared port
- input port
- input/output ports
- internally terminated port
- linear printer port
- locked port
- LPT port linear printer port
- MIDI port
- MIDI/Game port
- motherboard mouse port
- mouse port
- multichannel buffered serial port
- network service port
- output port
- parallel port
- PS/2 port
- serial input/output port
- serial port
- standard parallel port
- sum port
- system port
- telephone service port
- test access port
- type 1 parallel port
- type 3 DMA parallel port
- unbalanced port
- upstream port
- view port
- well-known port

- acoustic alarm system
- acoustic image system
- acoustic systems
- actiontrack system
- active IR-system
- actuator system
- adaptive communication system
- adaptive teleinformation system
- adaptive telemetering system
- advanced information system
- Afsatcom system
- air system
- aircraft intercommunication system
- airfield communication system
- air-ground automatic system
- airline reservation system
- air-to-ground TV system
- alarm signal system
- alarm system
- all-channel signaling system
- ALL-IN-ONE system
- alphanumeric system
- amplified speaker system
- amplitude shift-keying system
- AMPS system
- analog cellular communication system
- analog cellular system
- analog component video system
- analog television system
- analog tropospheric system
- anisochronous system
- antenna system
- antitheft system
- AR system
- Arabsat system
- ASK system
- associated channel analog system
- asynchronous address communication system
- audio recording system
- Aurora system
- Aussat system
- automatic communication system
- automatic connection establishment system
- automatic control system
- automatic data acquisition system
- automatic telegraphy system
- automatic telephone system
- automatic tuning system
- automatized cellular system
- auxiliary alarm system
- balanced cable transmission system
- band sharing system
- base station system
- baseband system
- basic input/output system
- bass-reflex speaker system
- batch processing system
- batch transmission system
- batch-and-forward system
- batteryless system
- bilateral CTV system
- binary tariff system
- biocontrol system
- bit parallel interface system
- bit transport system
- bridge duplex system
- broadband mobile system
- broadcast satellite system
- broadcasting delivery media systems
- burglar alarm system
- byte-serial interface system
- cabinet system
- cabinetless system
- cable distribution system
- cable TV system
- call-accounting system
- call-answering system
- call-counting system
- call-distributing system
- call-processing system
- call-queueing system
- camp-on system
- CAPTAIN system
- car component audio system
- carrier reinsertion system
- carrier system
- carrier-communication system
- carrier-current communication system
- Cassegrain-Schmidt system
- cassette recording system
- cassette reproducing system
- CATRIN system
- caution system
- CD 900 system
- cellular system
- cellular-radio system
- central-battery system
- centralized control system
- chirp binary telegraph system
- cipher system
- circuit switched telecommunication system
- circuit switching telecommunication system
- circular telecontrol system
- clock system
- closed-circuit communication system
- closed-circuit telegraph system
- closed-numbering system
- code-dependent system
- code-division multiple access system
- code-independent system
- code-insensitive system
- code-sensitive system
- coding system
- coherent fiber-optic system
- collimating system
- collocated system
- color separating system
- combined numbering system
- combined power supply system
- combined satellite communication system
- common-battery system
- common-carrier system
- common-channel signaling system
- common-engineering communication system
- common-purpose cellular system
- common-using band system
- common-using cordless telephone system
- common-using paging system
- communication system
- communication traffic system
- communications system
- community antenna system
- community antenna television system
- community TV-system
- commununication switching system
- compact disk digital audio system
- compatible color television system
- compatible single sideband system
- compatible single-band system
- compatible TV-system
- complex radio communication system
- computer vision system
- computer-telephone system
- Comsar system
- Comsat system
- Conax system
- concentrated-insonation system
- conference system
- conference-communication system
- congested system
- congress-class system
- constant-current system
- control generating system
- conventional television system
- Conversant system
- cordless-communication system
- crossbar system
- crossed-coincident microphone system
- Crosspoint system
- CSE system
- C-system
- cubical video projecting system
- data processing system
- data system
- data transport system
- data-collection system
- data-compression system
- data-exchange system
- dataflow system
- data-gathering system
- data-handling system
- data-measuring system
- data-reduction system
- data-transmission system
- Decca Navigator system
- DECfax system
- decision-feedback system
- dedicated control channel system
- dedicated multimedia system
- delta-sigma system
- deluxe presentation system
- departmental communication system
- desktop-video system
- DFS/Copernicus system
- dial-telephone system
- differential phase shift-keying system
- differential-duplex system
- differential-magnetic system
- digital camera system
- digital hybrid-key telephone system
- digital mass storage system
- digital microwave radio transmission system
- digital telephone communication system
- digital transmission system
- digital TV-communication system
- Digital UNIX system
- digital-analog system
- digital-cellular system
- digital-data modulation system
- digital-effect system
- digital-message entry system
- digital-termination system
- direct-broadcasting satellite system
- directing system
- direct-modulation system
- direct-sequence system
- direct-telephone communication system
- discrete communication system
- discrete sound system
- discrete-addressing system
- disk-operating system
- DISOSS system
- dispatch telephone communication system
- dispatch-center system
- dispersed-insonation system
- distributed-insonation system
- distributed-processing system
- documental-type communication system
- Dolby systems
- domestic satellite communication system
- double-band telephone communication system
- double-channel transmission system
- double-current transmission system
- double-pole communication system
- double-sideband large carrier system
- DSCS system
- D-system
- dual-cable system
- dual-reflector system
- duplexed system
- Earth-to-space transmission system
- ECM system
- electric communication system
- electronic antishock system
- electronic data-gathering system
- electronic data-processing system
- electronic-message system
- electronic-scanning system
- electronic-switching system
- Ellipso system
- emergency telephone communication system
- emergency-broadcast system
- EMX system
- equidistant system
- error-correction system
- error-detection system
- Eutelsat system
- extensible system
- external paging system
- facsimile system
- fast-acting servicing system
- fault-tolerant system
- fax communication system
- fax transmitting system
- feed system
- fiber transmission system
- fiber-optic transmission system
- field-sequential system
- final mile system
- finishing system
- fire alarm system
- fire warning system
- first generation cellular system
- five-channel communication system
- fixed satellite system
- Flexcam system
- flexible access system
- Flitsatcom system
- focusing system
- four-channel sound system
- four-dimensional system
- four-wire telephone communication system
- frame-sequential system
- frequency shift-keying system
- frequency-carrier system
- frequency-control system
- front-bass reflex speaker system
- fully digital system
- gate system
- Gaussian system
- generalized system
- generating dynamic system
- generator-dc-motor system
- GIGASET radio system
- global positioning system
- Global system
- Gopher system
- grandfathered system
- group-alerting and dispatching system
- guide system
- hard-wired CCTV system
- hazard system
- helical-scan system
- HF-synchronizing system
- high-precision navigating system
- Hi-linear system
- home system
- home-telephone system
- home-type system
- homing-guidance system
- host system
- hydroacoustic system
- ideal communication system
- idealized system
- image informaion system
- image-forming system
- immedial servicing system
- incompatible system
- independent system
- information retrieval system
- information system radio system
- information system
- information-feedback system
- information-measuring system
- infrared alarm system
- Inmarsat system
- Inmarsat-A system
- Inmarsat-B system
- Inmarsat-C system
- Inmarsat-D system
- Inmarsat-M system
- Inmarsat-P system
- integrated telephone system
- integrated videographic teleconferencing system
- integrated-antenna system
- integrated-communication system
- integrated-modulation system
- integrated-office system
- Intelsat system
- interactive system
- intercarrier-sound system
- intercommunication system
- intercontinental tropospheric system
- interlock system
- intermachine exchange system
- intermediate system
- international communication system
- interphone system
- Intervision system
- intraband signaling system
- intruder alarm system
- inward-outward dialing system
- ionoscatter system
- ionosphere sounder system
- ionospheric system
- Iridium system
- isolated system
- Italsat system
- J-carrier system
- joint-multichannel trunking and switching system
- K-carrier system
- key system
- key-telephone system
- land satellite communication system
- large-grained communication system
- laser communication system
- L-band satellite system
- L-carrier system
- Leasat system
- lightning protection system
- limited distortion system
- line amplifiers system
- link system
- little-channel relay system
- local alarm system
- local battery system
- local communication system
- local radio paging system
- long-haul system
- long-range system
- loop system
- loud-speaking communication system
- low-traffic system
- magnetic tape recording system
- Mail system
- management-information system
- manual cellular system system
- manual telephone set system
- Marisat system
- master television system
- master-antenna television system
- matrix sound system
- message feedback system
- message procession system
- message registration system
- message-switched system
- meteor radio system
- Metrobus system
- micro component system
- Micro Press Cluster Printing system
- micro-lens system
- microprocessor system
- microwave relay system
- midi system
- mine radio telephone system
- mini system
- mixed media system
- mixed numbering system
- mobile cellular communication system
- mobile land communication system
- mobile radio system
- mobile relay system
- mobile system
- modulated system
- monetary mobile system
- MS-Mail system
- multiareal system
- multicassette system
- multichannel telephone system
- multicomputer system
- multidisk system
- multiformat recording system
- multifrequency tone signaling system
- multiguard system
- multilevel mixed system
- multimedia system
- multiple-channel system
- multiqueue system
- Multiscrypt system
- multistandard system
- multitrack editing system
- mutibeam antenna system
- muting system
- Nagravision system
- NAMTS system
- narrow-angle TV system
- national communication system
- navigation system
- n-channel communication system
- n-channel DPSK system
- n-channel transmission system
- network standalone system
- network system
- network-operation system
- networks numbering system
- neutral direct-current telegraph system
- n-head video system
- NMT system
- noise-reduction system
- nonhoming tuning system
- noninterlaced television system
- nonsegmented system
- Norsat system
- n-satellite system system
- n-tone DPSK system
- n-tone MFSK system
- NTSC system
- NTT system
- obligatory message system
- Odyssey system
- off-line system
- on-line computer system
- on-line secured system
- open numbering system
- open system
- operative-engineering communication system
- opposite signals system
- optical-communication system
- optical-information system
- optical-projection system
- optoelectronic system
- oscillating system
- oscillation system
- outband signaling system
- package-and-resource tracking system
- pagemaster system
- paging system
- PAL system
- parametric system
- PATHWORKS system
- pattern recognition system
- personal holding guard system
- phase shift-keying system
- phone system
- Piccolo system
- pilot-controller system
- polar direct-current telegraph system
- portable mobile system
- power control system
- power controlling system
- power-line carrier system
- power-supply system
- press-to-talk system
- Prestel system
- primary-supply system
- privacy system
- private branch paging system
- private movable system
- private videodata system
- private videotex system
- process-interface system
- PROFS system
- programmable cross-connect system
- programmable cross-connected system
- programmed radio system
- prompting system
- protected wireline distribution system
- protection system
- pseudoquadraphony system
- pseudotrunking system
- public videodata system
- public videotex system
- pulse-code system
- pulse-frequency system
- pulse-time system
- quadraphonic sound system
- quadruple-diversity system
- R1 system
- R2 system
- radio buoy system
- radio command system
- radio communication system
- Radio Data system
- radio facsimile system
- Radiocom 2000 system
- radio-control system
- radio-paging system
- radio-relay system
- radiosonde-radio-wind system
- radio-telemetering system
- real time pulse-echo system
- real time system
- receiver lockout system
- recording system
- recovery system
- redundant system
- reference-information system
- regional electronic payment system
- relay-radio system
- remote concentrating system
- remote control system
- remote diagnostic system
- remote information system
- remote semiconcentrating system
- remote sensing system
- remote signaling system
- rendering system
- rerecording system
- reserved servicing system
- RF/Transmission system
- rotary system
- safety alarm system
- safety system
- Satcom system
- satellite comminication system
- satellite marine comminication system
- Satellite Master Antenna Television system
- satellite radio system
- satellite-aircraft communication system
- SB-communication system
- SBL communication system
- scalable system
- scanning trunking system
- SCO UNIX system
- searchless identification system
- seat reservation system
- SECAM system
- second generation cellular system
- second room system
- secondary supply system
- secrecy system
- section communication system
- security system
- segmented system
- seismic system
- selective calling system
- selective frequency base station system
- selective protective system
- selective telephone system
- self-adjusting system
- self-balancing differential system
- self-contained system
- self-test system
- selsyn system
- semiautomatic-switching system
- semiautomatized cellular system
- sensory system
- servo system
- shadow-batch system
- short-haul microwave system
- Sicral system
- Sigma Servo system
- signal system
- simplex movable system
- single-band transmission system
- single-busbar system
- single-cable communication system
- single-cable system
- single-channel system
- single-current transmission system
- single-pulse tracking system
- Skynet system
- small-grained communication system
- SmarTrunk II radio communication system
- solid-state uninterruptible power battery system
- Sony bus system
- sound alarm system
- sound equalization system
- sound navigation system
- sound reinforcement system
- sound warning system
- space-division system
- space-switched system
- spark-safe system
- speaker system
- special communication system
- speech-processing system
- speech-recognition system
- split-speaker system
- spread-spectrum system
- stabilizing system
- stage monitoring system
- standalone double point system
- star-circuit system
- STAREX CMX system
- starting communication system
- start-stop system
- stationary satellite system
- step-by-step system
- stereo sound system
- stereophonic sound system
- storage system
- storage-and-retrieval system
- Strowger system
- submarine fiber-optic system
- subprimary digital transmission system
- subscriber carrier system
- subscriber switching system
- suffix system
- Supersat system
- supervisory control system
- surround sound system
- switched telecommunication system
- switching system
- sync communication system
- synchro system
- synchronous communication system
- synchronous digital system
- TAGS system
- tandem system
- tariffication system
- T-carrier system
- TDF system
- teleautomatic system
- Telecom system
- telecommunication system
- telecommunications system
- telecommunication-service priority system
- telecommunications-service priority system
- telecontrol system
- telemechanic system
- telemetering system
- telemetry system
- telephone system
- telephone-answering system
- telephone-communication system
- telephone-communications system
- teleprocessing system
- Telesat system
- teletex system
- teletypewriter system
- television-telephone system
- Tele-X system
- Telsar system
- terminal system
- terrestrial radio-relay system
- theft-prevention system
- thin-route system
- third generation communication system
- three-axle stabilizing system
- three-channel HF-telephone system
- three-channel transmission system
- three-color system
- three-lens optical system
- three-primary system
- three-wire system
- time-dissemination system
- time-frequency hopping system
- time-switched system
- total access communication system
- total area coverage system
- transmission system
- trichromatic system
- triple-interlace system
- triplex system
- trunk communication system
- TV-observation system
- twelve-channel transmission system
- two-arm system
- two-band system
- two-color system
- two-roller transfer system
- two-step control system
- two-way CATV system
- two-way system
- two-wire telephone communication system
- ultra-match system
- ULTRIX system
- unified radioaccess system
- unilateral-control system
- unilateral-synchronization system
- uninterruptible-power system
- Unisat system
- universal alarm system
- universal-battery system
- universal-electronic system
- universal-movable system
- Uniworks system
- vestigial-sideband system
- video editing system
- video home system
- video recording system
- videocom system
- videoteleconference system
- videotex system
- virtual studio system
- vision system
- vocoder system
- voice dialog system
- voice frequency carrier telegraph system
- voice modulation system
- voice post system
- volume control system
- waiting system
- warning system
- watch system
- watching system
- waterside facsimile communication system
- wave-propagating system
- wide-angle TV system
- Winfax Pro system
- wired broadcasting system
- wireless CCTV system
- wireless home system
- wireless infrared speaker system
- wire-radio communication system
- XY system
- zone-selective protection system
- zoning system