Electronic Central Office

- branch office
- call office
- central office
- central radio office
- central telegraph office
- communication-center office
- community-dial office
- comprehensive electronic office
- computerized office
- crossbar office
- dial central office
- dial office
- electronic office
- end office
- forwarding office
- intermediate office
- local central office
- mobile office
- originating screening office
- tandem central office
- tandem office
- telegraph office
- terminating screening office
- toll office
- tributary office
- verification office

- automated office
- automatic office
- box office
- branch office
- call office
- central office
- central telegraph office
- community dial office
- computing service office
- crossbar office
- dial office
- dial central office
- electronic office
- elusive office
- end office
- innovation office
- local central office
- long-distance office
- mobile telephone switching office
- originating office
- paperless office
- small office/home office
- subscriber office
- switching office
- tandem office
- toll office
- virtual office

- automatic office
- box office
- branch office
- call office
- central office
- central telegraph office
- community dial office
- computing service office
- crossbar office
- dial central office
- dial office
- electronic office
- elusive office
- end office
- innovation office
- local central office
- long-distance office
- mobile telephone switching office
- office of future
- originating office
- paperless office
- small office/home office
- subscriber office
- switching office
- tandem office
- toll office
- virtual office

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- 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

- adaptive computer
- airborne computer
- all-applications computer
- all-purpose computer
- alternating-current analog computer
- analog computer
- analog-digital computer
- arbitrary sequence computer
- associative computer
- asynchronous computer
- automotive computer
- baby-sized computer
- back-end computer
- batch-oriented computer
- battery-operated computer
- binary computer
- binary-transfer computer
- board computer
- boutique computer
- brand-name computer
- breadboard computer
- buffered computer
- business computer
- business-oriented computer
- byte computer
- byte-organized computer
- byte-oriented computer
- cassette-based computer
- census computer
- central computer
- character-oriented computer
- chemical-based computer
- chess computer
- CISC computer
- commercial computer
- commodity computer
- communication computer
- communications oriented computer
- compatible computer
- complete-instruction-set computer
- concurrent computer
- consecutive computer
- consecutive sequence computer
- continuously acting computer
- control computer
- control flow computer
- correlation computer
- coupled computers
- cryogenic computer
- cryotron computer
- custom computer
- database computer
- data-flow computer
- decimal computer
- dedicated computer
- desk computer
- desk-size computer
- desk-top computer
- dialing set computer
- dial set computer
- digital computer
- direct execution computer
- direct-analogy computer
- direct-current computer
- diskless computer
- distributed logic computer
- drum computer
- dual-processor computer
- education computer
- electromechanical analog computer
- electronic tube computer
- electron tube computer
- electronic computer
- end-user computer
- ever-faster computer
- externally programmed computer
- fault-tolerant computer
- fifth-generation computer
- file computer
- first-generation computer
- fixed word-length computer
- fixed-point computer
- fixed-program computer
- flat screen computer
- floating-point computer
- fluid computer
- four-address computer
- fourth-generation computer
- fractional computer
- front-end computer
- gateway computer
- general-purpose computer
- giant computer
- giant-powered computer
- giant-scale computer
- giant-size computer
- gigacycle computer
- gigahertz computer
- guidance computer
- handheld computer
- high-end computer
- high-function computer
- high-level language computer
- high-level computer
- highly parallel computer
- high-performance computer
- high-speed computer
- hobby computer
- home banking computer
- home computer
- host computer
- hybrid computer
- IBM-compatible computer
- IC computer
- incompatible computer
- incremental computer
- industrial computer
- integrated circuit computer
- interface computer
- interim computer
- intermediate computer
- internally programmed computer
- Internet computer
- keyboard computer
- kid computer
- laptop computer
- large computer
- large-powered computer
- large-scale computer
- large-scale integration circuit computer
- large-size computer
- laser computer
- linkage computer
- local computer
- logical computer
- logic computer
- logic-controlled sequential computer
- logic-in-memory computer
- low-end computer
- low-profile computer
- low-speed computer
- LSI computer
- mainframe computer
- massively parallel computer
- master computer
- mechanical computer
- medium computer
- medium-powered computer
- medium-size computer
- medium-speed computer
- medium-to-large scale computer
- mediun-scale computer
- megacycle computer
- megahertz computer
- microprogrammable computer
- microwave computer
- mid-range computer
- molecular computer
- monoprocessor computer
- multiaddress computer
- multi-MIPS computer
- multiple-access computer
- multiple-user computer
- multiprocessor computer
- multiprogrammed computer
- multipurpose computer
- multiradix computer
- navigation computer
- net node computer
- networked computer
- N-node computer
- no-address computer
- node computer
- nonsequential computer
- nonstop computer
- non-von Neumann computer
- notebook computer
- object computer
- office computer
- off-the-shelf computer
- one-address computer
- one-and-half-address computer
- one-on-one computer
- one-purpose computer
- optical computer
- optical path computer
- original computer
- palm-size computer - parallel-processing computer
- parallel-serial computer
- parametric-electronic computer
- parametron computer
- pen-based computer
- pentop computer
- perihperal support computer
- peripheral computer
- personal computer
- pictorial computer
- pipeline computer
- plugboard computer
- plug-compatible computer
- plugged program computer
- pneumatic computer
- pocket computer
- Polish-string computer
- polynomial computer
- portable computer
- process control computer
- production control computer
- professional computer
- professional personal computer
- program-compatible computer
- program-controlled computer
- programmed computer
- punch-card computer
- rack-size computer
- radix two computer
- real-time computer
- recovering computer
- reduced instruction set computer
- reduction computer
- remote computer
- repetitive computer
- RISC computer
- satellite computer
- scientific computer
- second-generation computer
- secondhand computer
- self-adapting computer
- self-organizing computer
- self-programming computer
- self-repairing computer
- self-repair computer
- sensor-based computer
- sequence-controlled computer
- sequenced computer
- sequential computer
- serial computer
- service computer
- service-oriented computer
- SIMD computer
- simultaneous-operation computer
- simultaneous computer
- single-address computer
- single-board computer
- single-purpose computer
- single-user computer
- slave computer
- small computer
- small-powered computer
- small-scale computer
- small-size computer
- soft-compatible computer
- solid-state computer
- SOS computer
- source computer
- space computer
- spaceborne computer
- special-purpose computer
- special computer
- square-root computer
- stack-oriented computer
- standby computer
- statistical computer
- steering computer
- stored-program computer
- subscriber computer
- super computer
- superconductive computer
- superhigh-speed computer
- superpersonal computer
- superspeed computer
- supervisory computer
- switch-control computer
- switching computer
- symbolic computer
- synchronous computer
- synchronous tracking computer
- tagged computer
- talking computer
- target computer
- technical computer
- technical personal computer
- terminal computer
- terminal control computer
- ternary-transfer computer
- tessellated computer
- thermal computer
- thin-film memory computer
- third-generation computer
- three-address computer
- three-dimensional analog computer
- timeshared computer
- top level computer
- top-of-the-line computer
- toy computer
- training computer
- transformation computer
- transistorized computer
- transistor computer
- translating computer
- tridimensional analog computer
- trip computer
- truth-table computer
- Turing-type computer
- two-address computer
- ultrafast computer
- underlying computer
- user computer
- vacuum tube computer
- variable word-length computer
- very-high-speed computer
- video-and-cassette-based computer
- virtual computer
- von Neumann computer
- wearable computer
- weather computer
- wired-program computer
- word-oriented computer
- workgroup computer
- X-computer
- zero-address computer