tape relay network

- acoustic relay
- active-power relay
- add-and-subtract relay
- alarm relay
- Allström relay
- all-to-all relay
- annunciation relay
- antenna relay
- antiplugging relay
- armature relay
- auxiliary relay
- balanced relay
- baseband relay
- biased relay
- bistable relay
- blocking relay
- break-in relay
- calling relay
- capacitance relay
- center-stable polar relay
- clapper relay
- clearing relay
- close-differential relay
- closing relay
- coaxial relay
- code relay
- command relay
- compelled relay
- conductance relay
- connector relay
- contact relay
- contactless relay
- continuous duty relay
- control relay
- correed relay
- current relay
- dc relay
- definite-purpose relay
- delay relay
- diaphragm relay
- differential relay
- digital radio relay
- direct-action relay
- directional relay
- directional-current relay
- directional-overcurrent relay
- directional-polarity relay
- directional-power relay
- directional-resistance relay
- directional-voltage relay
- directivity relay
- distance relay
- dry-reed relay
- earth-fault relay
- electrical relay
- electrical-mechanical relay
- electromagnetic relay
- electromechanical relay
- electronic relay
- electronic-tube relay
- electrostatic relay
- electrostrictive relay
- enclosed relay
- extraterrestrial relay
- fast-operate relay
- fast-packet frame-relay
- fast-release relay
- fault selective relay
- ferrodynamicrelay
- field application relay
- field loss relay
- flat-type relay
- flow relay
- frequency relay
- frequency-selective relay
- frequency-sensitive relay
- gas-filled relay
- gas-filled reed relay
- general-purpose relay
- ground relay
- ground protective relay
- group-selector relay
- guard relay
- heavy-duty relay
- hermetically sealed relay
- high G-relay
- high-speed relay
- homing relay
- hot-wire relay
- impedance relay
- indicating relay
- indirect-action relay
- inertia relay
- initiating relay
- instantaneous overcurrent relay
- instrument-type relay
- integrating relay
- interlock relay
- intersatellite relay
- key relay
- Kipp relay
- lag relay
- latch-in relay
- latching relay
- LED-coupled solid-state relay
- light relay
- light-activated switching relay
- line relay
- line-break relay
- locking relay
- lockout relay
- lock-up relay
- logic relay
- magnetic reed relay
- magnetostrictive relay
- manual-automatic relay
- marginal relay
- mechanical locking relay
- memory relay
- mercury relay
- mercury-contact relay
- mercury-wetted reed relay
- metering relay
- meter-type relay
- mho relay
- microwave relay
- microwave-radio relay
- motor-field failure relay
- multiposition relay
- NC relay
- net-to-net relay
- network relay
- network master relay
- network phasing relay
- neutral relay
- NO relay
- nonpolarized relay
- normally-closed relay
- normally-open relay
- notching relay
- open relay
- open-phase relay
- oscillating relay
- overcurrent relay
- overfrequency relay
- overload relay
- overpower relay
- overvoltage relay
- percentage-differential relay
- phase-balance relay
- phase-reversal relay
- phase-rotation relay
- phase-sequence relay
- phase-shift relay
- photoelectric relay
- plunger relay
- polar relay
- polarized relay
- polyphase relay
- power relay
- pressure relay
- protective relay
- pulse reed relay
- radar relay
- radio relay
- ratchet relay
- rate-of-change relay
- rate-of-change temperature relay
- rate-of-rise relay
- ratio-balance relay
- ratio-differential relay
- reactance relay
- reactive-power relay
- reclosing relay
- reed relay
- register relay
- regulating relay
- remanent relay
- reset relay
- residual relay
- resistance relay
- resonant-reed relay
- reverse relay
- reverse-current relay
- ringing relay
- rotary stepping relay
- satellite relay
- selector relay
- self-latching relay
- semiconductor relay
- sensitive relay
- separating relay
- sequence relay
- sequential relay
- side-stable relay
- signal-actuated relay
- single-phase relay
- slave relay
- slow-acting relay
- slow-action relay
- slow-cutting relay
- slow-operate relay
- slow-release relay
- solenoid relay
- solid-state relay
- space relay
- speed-sensitive relay
- spring-actuated stepping relay
- SR relay
- stepping relay
- storage relay
- supersensitive relay
- surge relay
- synchronizing relay
- tape relay
- temperature relay
- test relay
- thermal relay
- thermostat relay
- three-position relay
- three-step relay
- time relay
- time-delay relay
- timing relay
- transformer-coupled solid-state relay
- transhorizon radio relay
- trip-free relay
- tripping relay
- trunk relay
- tuned relay
- two-position relay
- two-step relay
- undercurrent relay
- underfrequency relay
- underpower relay
- undervoltage relay
- vacuum reed relay
- valve relay
- vibrating relay
- voltage relay
- zero phase-sequence relay

- acoustic relay
- active-power relay
- add-and-subtract relay
- alarm relay
- Allström relay
- all-to-all relay
- annunciation relay
- antenna relay
- antiplugging relay
- armature relay
- auxiliary relay
- balanced relay
- baseband relay
- biased relay
- bistable relay
- blocking relay
- break-in relay
- calling relay
- capacitance relay
- center-stable polar relay
- clapper relay
- clearing relay
- close-differential relay
- closing relay
- coaxial relay
- code relay
- command relay
- compelled relay
- conductance relay
- connector relay
- contact relay
- contactless relay
- continuous duty relay
- control relay
- correed relay
- current relay
- dc relay
- definite-purpose relay
- delay relay
- diaphragm relay
- differential relay
- digital radio relay
- direct-action relay
- directional relay
- directional-current relay
- directional-overcurrent relay
- directional-polarity relay
- directional-power relay
- directional-resistance relay
- directional-voltage relay
- directivity relay
- distance relay
- dry-reed relay
- earth-fault relay
- electrical relay
- electrical-mechanical relay
- electromagnetic relay
- electromechanical relay
- electronic relay
- electronic-tube relay
- electrostatic relay
- electrostrictive relay
- enclosed relay
- extraterrestrial relay
- fast-operate relay
- fast-packet frame-relay
- fast-release relay
- fault selective relay
- ferrodynamic relay
- field application relay
- field loss relay
- flat-type relay
- flow relay
- frequency relay
- frequency-selective relay
- frequency-sensitive relay
- gas-filled reed relay
- gas-filled relay
- general-purpose relay
- ground protective relay
- ground relay
- group-selector relay
- guard relay
- heavy-duty relay
- hermetically sealed relay
- high G relay
- high-speed relay
- homing relay
- hot-wire relay
- impedance relay
- indicating relay
- indirect-action relay
- inertia relay
- initiating relay
- instantaneous overcurrent relay
- instrument-type relay
- integrating relay
- interlock relay
- intersatellite relay
- key relay
- Kipp relay
- lag relay
- latch-in relay
- latching relay
- LED-coupled solid-state relay
- light relay
- light-activated switching relay
- line relay
- line-break relay
- locking relay
- lockout relay
- lock-up relay
- logic relay
- magnetic reed relay
- magnetostrictive relay
- manual-automatic relay
- marginal relay
- mechanical locking relay
- memory relay
- mercury relay
- mercury-contact relay
- mercury-wetted reed relay
- metering relay
- meter-type relay
- mho relay
- microwave relay
- microwave-radio relay
- motor-field failure relay
- multiposition relay
- NC relay
- net-to-net relay
- network master relay
- network phasing relay
- network relay
- neutral relay
- NO relay
- nonpolarized relay
- normally-closed relay
- normally-open relay
- notching relay
- open relay
- open-phase relay
- oscillating relay
- overcurrent relay
- overfrequency relay
- overload relay
- overpower relay
- overvoltage relay
- percentage-differential relay
- phase-balance relay
- phase-reversal relay
- phase-rotation relay
- phase-sequence relay
- phase-shift relay
- photoelectric relay
- plunger relay
- polar relay
- polarized relay
- polyphase relay
- power relay
- pressure relay
- protective relay
- pulse reed relay
- radar relay
- radio relay
- ratchet relay
- rate-of-change relay
- rate-of-change temperature relay
- rate-of-rise relay
- ratio-balance relay
- ratio-differential relay
- reactance relay
- reactive-power relay
- reclosing relay
- reed relay
- register relay
- regulating relay
- remanent relay
- reset relay
- residual relay
- resistance relay
- resonant-reed relay
- reverse relay
- reverse-current relay
- ringing relay
- rotary stepping relay
- satellite relay
- selector relay
- self-latching relay
- semiconductor relay
- sensitive relay
- separating relay
- sequence relay
- sequential relay
- side-stable relay
- signal-actuated relay
- single-phase relay
- slave relay
- slow-acting relay
- slow-action relay
- slow-cutting relay
- slow-operate relay
- slow-release relay
- solenoid relay
- solid-state relay
- space relay
- speed-sensitive relay
- spring-actuated stepping relay
- SR relay
- stepping relay
- storage relay
- supersensitive relay
- surge relay
- synchronizing relay
- tape relay
- temperature relay
- test relay
- thermal relay
- thermostat relay
- three-position relay
- three-step relay
- time relay
- time-delay relay
- timing relay
- transformer-coupled solid-state relay
- transhorizon radio relay
- trip-free relay
- tripping relay
- trunk relay
- tuned relay
- two-position relay
- two-step relay
- undercurrent relay
- underfrequency relay
- underpower relay
- undervoltage relay
- vacuum reed relay
- valve relay
- vibrating relay
- voltage relay
- zero phase-sequence relay

- accelerating relay
- active relay
- actuating relay
- air-borne radio relay
- all-or-nothing relay
- all-to-all relay
- amateur relay
- armature relay
- automating reclosing relay
- balanced relay
- bimetallic relay
- bimetallic strip relay
- blocking relay
- break-in relay
- burglar alarm device relay
- bypass relay
- calling relay
- capacitance relay
- cell relay
- center-zero relay
- clearing relay
- clock relay
- closing relay
- coaxial relay
- conductance relay
- connector relay
- corner relay
- current relay
- cut-in relay
- cut-off relay
- data-transmission relay
- dc relay
- delay relay
- differential relay
- digital relay
- directional relay
- disconnecting link relay
- distance relay
- double-pole relay
- double-wound relay
- dry-reed relay
- electric relay
- electromagnetic relay
- electromechanical relay
- electronic relay
- executive relay
- fast-release relay
- fast-speed relay
- flat-type relay
- frame relay
- frequency relay
- functional relay
- gas-filled relay
- group-selector relay
- guard relay
- heat relay
- homing relay
- impulse relay
- indicating relay
- indirect acting relay
- indirect action relay
- induction relay
- induction-disk relay
- inductive relay
- initiating relay
- instantaneous relay
- instrument-type relay
- interlock relay
- intermediate relay
- Kipp relay
- L-armature relay
- latch-in relay
- lock-up relay
- low-voltage relay
- magnetic locking relay
- marginal relay
- maximum-current relay
- metering relay
- meter-type relay
- microwave relay
- minimal relay
- network master relay
- neutral relay
- nonpolarized relay
- normally-closed relay
- normally-open relay
- no-voltage relay
- ohm relay
- optical-electronic relay
- output relay
- overload relay
- overpower relay
- overtemperature relay
- overvoltage relay
- peak relay
- phase relay
- phase-balance relay
- phase-comparison relay
- phase-sequence relay
- phase-shift relay
- phase-undervoltage relay
- photocell relay
- photoelectric relay
- phototube relay
- polarized relay
- polyphase relay
- positive sequence relay
- power relay
- primary relay
- programed-time relay
- protective relay
- pulse relay
- quick-operation relay
- radio relay
- ratio-balance relay
- reactance relay
- reclosing relay
- redundant relay
- reed relay
- register relay
- regulating relay
- reverse-current relay
- ringing relay
- rotary-stepping relay
- satellite relay
- SDI-relay
- SDV-relay
- secondary relay
- selective call relay
- self-reset relay
- shunt relay
- shutdown relay
- sidestable relay
- single-phase relay
- single-pole relay
- single-wound relay
- slow-acting relay
- slow-operate relay
- slow-release relay
- solenoid relay
- solid-state relay
- speed relay
- starting relay
- stepping relay
- storage relay
- switching relay
- switching-through relay
- synchronizing relay
- tape relay
- telephone relay
- terminal relay
- test relay
- thermionic relay
- three-phase relay
- thyratron relay
- time relay
- timing relay
- transistor relay
- trip-free relay
- trunk relay
- ultrafast relay
- undercurrent relay
- voltage relay
- wet-reed relay
- wholly-static relay
- zero-base sequence relay

- advertiser-supported radio station
- aeronautical station
- aeronautical fixed station
- aeronautical marker-beacon station
- aeronautical utility land station
- aeronautical utility mobile station
- air station
- aircraft station
- air-defense early warning station
- airdrome control station
- airport control station
- Alpha station
- altimeter station
- amateur station
- attended station
- B-station
- base station
- base transceiver station
- beacon station
- booster station
- British Forces broadcasting station
- broadcast station
- broadcasting station
- brush station
- cable television relay station
- called station
- caller's telephone station
- central reference station
- central wireless station
- class-A station
- class-B station
- class-C station
- class-D station
- coast station
- coastal station
- coast-earth station
- coastal-earth station
- coast telegraph station
- coastal telegraph station
- commercial station
- communications station
- communications relay station
- control station
- crossing station
- data station
- direction-finding station
- display station
- docking station
- dual attachment station
- duplication station
- duty station
- early warning station
- earth station
- end station
- exchange service station
- facsimile broadcast station
- fixed station
- fixed ground station
- fixed wireless station
- gateway station
- glide-path station
- ground station
- guidance station
- high-frequency broadcast station
- homing station
- hydrological and meteorological fixed station
- IC station
- inquiry station
- intercept station
- international air traffic communication station
- ionospheric station
- jamming station
- junction station
- key station
- land station
- listening station
- local station
- localizer station
- long-distance station
- loran station
- magnetotelluric station
- marine broadcast station
- marine radio-beacon station
- master station
- meteorological station
- microwave relay station
- mobile station
- mobile broadcast station
- mobile earth station
- multiple-access station
- national radio station
- naval air station
- naval communications station
- naval radio station
- network management station
- node station
- omnidirectional radio-range station
- pay station
- personal earth station
- power station
- private-aircraft station
- punching station
- radar station
- radio station
- radio-beacon station
- radio-direction-finding station
- radiolocation station
- radionavigation station
- radio-positioning station
- radio-range station
- radio reading station
- radio-relay station
- radiosonde station
- radio-tracking station
- reading station
- receiving station
- relay station
- remote station
- remote-control station
- repeater station
- reservation station
- satellite-communications earth station
- satellite solar power station
- satellite-tracking station
- service station
- ship station
- shore radio station
- single attachment station
- slave station
- slope station
- space station
- standard-frequency station
- subscriber station
- surveillance radar station
- switching station
- tape-relay station
- telemetering station
- telemetering land station
- telemetry station
- telephony station
- telephony earth station
- television station
- television broadcast station
- television pickup station
- terminal station
- terrestrial station
- toll station
- tracker station
- tracking station
- transmitting station
- transport station
- transportable station
- tropo relay station
- unattended station
- unattended repeater station
- upload station
- user station
- way station
- wireless station
- wireless telegraphy station
- work station

- advertiser-supported radio station
- aeronautical fixed station
- aeronautical marker-beacon station
- aeronautical station
- aeronautical utility land station
- aeronautical utility mobile station
- air station
- aircraft station
- air-defense early warning station
- airdrome control station
- airport control station
- Alpha station
- altimeter station
- amateur station
- attended station
- B station
- base station
- base transceiver station
- beacon station
- booster station
- British Forces broadcasting station
- broadcast station
- broadcasting station
- brush station
- cable television relay station
- called station
- caller's telephone station
- central reference station
- central wireless station
- class-A station
- class-B station
- class-C station
- class-D station
- coast station
- coastal station
- coastal telegraph station
- coastalal telegraph station
- coastal-earth station
- coast-earth station
- commercial station
- communications relay station
- communications station
- control station
- crossing station
- data station
- direction-finding station
- display station
- docking station
- dual attachment station
- duplication station
- duty station
- early warning station
- earth station
- end station
- exchange service station
- facsimile broadcast station
- fixed ground station
- fixed station
- fixed wireless station
- gateway station
- glide-path station
- ground station
- guidance station
- high-frequency broadcast station
- homing station
- hydrological and meteorological fixed station
- IC station
- inquiry station
- intercept station
- international air traffic communication station
- ionospheric station
- jamming station
- junction station
- key station
- land station
- listening station
- local station
- localizer station
- long-distance station
- loran station
- magnetotelluric station
- marine broadcast station
- marine radio-beacon station
- master station
- meteorological station
- microwave relay station
- mobile broadcast station
- mobile earth station
- mobile station
- multiple-access station
- national radio station
- naval air station
- naval communications station
- naval radio station
- network management station
- node station
- omnidirectional radio-range station
- pay station
- personal earth station
- power station
- private-aircraft station
- punching station
- radar station
- radio reading station
- radio station
- radio-beacon station
- radio-direction-finding station
- radiolocation station
- radionavigation station
- radio-positioning station
- radio-range station
- radio-relay station
- radiosonde station
- radio-tracking station
- reading station
- receiving station
- relay station
- remote station
- remote-control station
- repeater station
- reservation station
- satellite solar power station
- satellite-communications earth station
- satellite-tracking station
- service station
- ship station
- shore radio station
- single attachment station
- slave station
- slope station
- space station
- standard-frequency station
- subscriber station
- surveillance radar station
- switching station
- tape-relay station
- telemetering land station
- telemetering station
- telemetry station
- telephony earth station
- telephony station
- television broadcast station
- television pickup station
- television station
- terminal station
- terrestrial station
- toll station
- tracker station
- tracking station
- transmitting station
- transport station
- transportable station
- tropo relay station
- unattended repeater station
- unattended station
- upload station
- user station
- way station
- wireless station
- wireless telegraphy station
- work station

- accepting station
- access station
- aerodynamic broadcast station
- affiliated station
- airborne decameter radio station
- Alcatel station
- all-mine telephone station
- amplifying station
- analog switching station
- analog-digital station
- analytical photogrammetric station
- automatic trunk station
- background station
- backhaul station
- backlogged station
- balanced station
- base station
- base-airborne station
- base-radio station
- BB-switching back-to-back station
- BB-switching end terminal station
- BB-switching n-way branching station
- beacon station
- boat-radio station
- booster station
- broadcasting node station
- broadcasting station
- broadcasting-satellite space station
- buffer station
- callers-telephone station
- car-subscriber station
- CB station
- central fire-alarm station
- central station
- central-searching station
- channel station
- channel-attached station
- civil band station
- class-A station
- class-B station
- class-C station
- class-D station
- coastal Earth station
- coastal station
- coastal terrestrial radio station
- commercial radio station
- communication relay station
- compact hand station
- computerized data exchange station
- container terrestrial station
- control station
- control-measuring station
- converted-base station
- crossing station
- data station
- data-transmission station
- destination station
- digital communication station
- digital photogrammetic station
- digital switching station
- digital terminal station
- display station
- diving telephone station
- drift station
- Earth station
- electronic mobile station
- emergency frequency station
- emergency-position indicating radiobeacon station
- emergency-radio station
- exchange-service station
- feeder-amplifier station
- fifth generation radio station
- fifth-class mobile station
- first-class mobile station
- fixed control station
- fixed station
- fixed-frequency station
- fixed-microwave auxiliary station
- FM-broadcasting station
- forwarding station
- four-course radio-range station
- fourth class mobile station
- fourth-generation radio station
- gate station
- graphic station
- ground station
- ground wireless station
- head wagon radio station
- head-end station
- heavy mobile station
- helicopter radio station
- hydroacoustic station
- IF drop insertion station
- IF repeating branching station
- IF repeating through station
- IF repeating TV drop insertion station
- image station
- industrial-communication station
- inquiry station
- integrated station
- intercom station
- interfered radio station
- interferencing radio station
- intermediate station
- intradepartment-communication center station
- land mobile station
- land station
- life-raft radio station
- light-weight mobile station
- line station
- line waterside USB-station
- line-network station
- locomotive radio station
- loudspeaking-communication station
- low-power television frequency station
- magnetic-tape station
- main station
- major relay station
- managing-radio station
- manual-trunk station
- master station
- media command station
- media control station
- meter-band station
- microwave repeating station
- microwave station
- minor-relay station
- mobile-Earth station
- mobile-radio station
- mobile-television station
- mobile-tropospheric station
- movable radio station
- multiband station
- municipal radio station
- network station
- newsroom station
- nodal coastal radio station
- nodal-communication station
- nonmagnetic diving station
- nonserviced repeater station
- on-board station
- operative-communication station
- passive station
- physical station
- piezoelectric batteryless station
- pipeline control USB-station
- play station
- pole-mounted station
- portable radio station
- portable relay station
- primary station
- priority mobile station
- rack-mounted station
- radio station
- radio-beacon monitor station
- radio-beacon station
- radiodirection-finder station
- radio-positioning land station
- radio-positioning mobile station
- radio-range station
- radiosonde station
- radiotelegraph station
- radiotelephone station
- railway radio station
- reading station
- readout station
- receiving-earth station
- regenerating station
- relay station
- remote feeding station
- remote forwarding station
- remote monitoring station
- repeater station
- reserve terrestrial radio station
- retransmitting station
- road station
- rural-subscriber station
- satellite station
- second class mobile station
- secondary station
- sectional communication center station
- semistationary terrestrial station
- sensing station
- serviced station
- serviced-repeater station
- ship-Earth station
- ship-radio station
- six-channel relay transmission station
- slave station
- solar radio station
- source station
- spark-safe radio station
- standard frequency-and-time signal station
- state radio station
- state relay station
- stationary relay station
- stationary station
- stationary terrestrial station
- subcontrol station
- subscriber station
- subscription station
- supervised station
- switching station
- tail wagon radio station
- telecode communication station
- telegraph station
- telemetering station
- telephone-and-telegraph station
- television pickup station
- temporary fire communiation station
- terminal communication station
- terminal exchange station
- terminal network station
- terminal telegraph station
- terrestrial ship radio station
- terrestrial station
- terrestrial terminal station
- terrestrial-coastal station
- third class mobile station
- three-wire diving station
- toll station
- train communication station
- transfer station
- transmitting Earth station
- transport station
- transportable earth station
- tributary station
- tropospheric communication station
- trunk telephone station
- TV-transmitting station
- ultra-short-band station
- underground terminal station
- unified diving station
- unmanned station
- USB-station
- user station
- videotex station
- wall-mounted station
- working station

- accumulator unit
- actuating unit
- addressing unit
- analog processing unit
- analytic unit
- answerback unit
- answering unit
- antitheft unit
- astronomical unit
- attached unit
- audio response unit
- auto setup unit
- automatic calling unit
- automatic control unit
- automatic network unit
- automatic-dialing unit
- auxiliary memory unit
- auxiliary servicing unit
- bad unit
- balancing unit
- base unit
- basic transmission unit
- bistable unit
- break-contact unit
- built-in heat protecting unit
- burglar-alarm unit
- calibration unit
- calling devices unit
- calling unit
- camera select unit
- camera-channel unit
- camera-control unit
- capacitor unit
- channel service unit
- charging unit
- clocking unit
- command network unit
- command protocol data unit
- communication control unit
- converter unit
- crosstalk unit
- data interface unit
- data transit unit
- data-handling unit
- dc control unit
- decoupling unit
- delay unit
- device control unit
- dial-backup unit
- dialing unit
- digital processing unit
- electronic control unit
- electronic relay unit
- electrostatic units
- exchange-line unit
- exchange-supply unit
- expedited-data unit
- fast-operating unit
- fast-operation unit
- feeding unit
- file-storage unit
- filter unit
- flyaway unit
- frequency conversion unit
- frequency lock-in unit
- frequency selection unit
- Gaussian units
- generator unit
- heat-control unit
- incoming local unit
- incoming toll unit
- incoming-line unit
- independent supply unit
- independent synchronizing unit
- indicator unit
- information unit
- input unit
- integrator unit
- internal unit
- internetworking unit
- junction line unit
- key-telephone unit
- lighting load monitoring unit
- line-connection unit
- lobe-attaching unit
- local unit
- locomotive radio components supply unit
- lone-signal unit
- loudness unit
- magnetic-tape unit
- main control unit
- main fax unit
- main memory unit
- mains synchronizing unit
- matching unit
- media interface unit
- medium attachment unit
- memory unit
- message recording unit
- microprocessor unit
- mine communication supply unit
- modular unit
- motor amplifier unit
- multipath unit
- multiprocessor unit
- multisection switching unit
- network terminating unit
- N-unit
- office interface unit
- off-line unit
- on-door speakers unit
- operational unit
- outgoing line unit
- output unit
- pan/tilt unit
- peripheral unit
- phase-shifting unit
- phasing unit
- power supply unit
- power unit
- printing unit
- processing unit
- program unit
- programming unit
- quad-on-line unit
- quartz crystal unit
- quick-disconnect control unit
- radio frequency unit
- radio station unit
- rectifier unit
- reference generator unit
- regeneration unit
- registrating unit
- relay testing unit
- relay unit
- remote control unit
- remote display unit
- remote subscriber unit
- replacement unit
- request unit
- resistor unit
- retransmission unit
- RF unit
- selective-gain unit
- self-contained unit
- sensing unit
- shared unit
- shared-control unit
- signal processing unit
- six-wire switching unit
- smooth-closing unit
- sound repetitor protection unit
- spark protecting unit
- stabilizator unit
- still picture unit
- storage unit
- studio devices unit
- sub unit
- subscriber's unit
- subundercarrier unit
- supply unit
- switch point operative communication unit
- switching unit
- synchronization signal unit
- system memory unit
- system unit
- tape unit
- telecine unit
- telecontrol unit
- telephone-control unit
- telephone-modulator unit
- teleprompter unit
- temperature-sending unit
- terminal retransmissions unit
- terminal unit
- terrestrial telemechanics unit
- three-wire switching unit
- time-base unit
- traffic unit
- transfer unit
- transit communication unit
- transmissive unit
- transmitting antenna unit
- tributary unit
- two-section switching unit
- undercarrier unit
- underground telemechanics unit
- unit of power
- vibrator unit
- video request unit
- video-out unit
- voice message control unit
- voice recognition unit
- voicememory unit
- writing unit

- 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