- ADTRAN
 - Supplier of digital transmission products deployed in carrier, enterprise, and global networks worldwide. - Advanced Internet Peripheral TEKnology (AIPTEK)
- Maker of PC cameras, tablets, and video phones.
- Tellabs
- Provides broadband solutions for carriers to deliver high-quality voice, video, and data services over wireline and wireless networks globally.
- Xecom
- Selection guides for miniature embeddable modems, telephone interfaces, tele-controllers & controllers, pc/104s, and ISDN modules.
- Redback Networks
- Provider of next-generation broadband networking equipment.
- Advanced Fibre Communications (1)
- Teltone Corporation
- Products include line simulators, telecommuting products, telecom ICs, utility communications products, 911 access systems, etc.
- Artesyn Technologies
- Provider of advanced power conversion equipment and real-time subsystems to the communications industry.
- Patton Electronics
- Manufacturer of data communications equipment.
- Harmonic, Inc. (1)
- Applied Signal Technology
- Designs, develops, markets and manufactures advanced digital signal processing equipment to collect and process telecommunications signals.
- Tripath (1)
- ARRIS
- Developer, manufacturer, and supplier of optical transmission, cable telephony and Internet access, outside plant construction, and maintenance equipment for cable system operators.
- NKT Integration
- Designs and manufactures integrated silica-on-silicon components for optical telecommunication networks.
- Vialta
- Manufactures and markets Beamer Video Phone and VistaFrame Digital Picture Frame home electronics.
- Rauland-Borg Corporation
- Healthcare, educational and correctional communications products found in schools, hospitals and correctional institutions around the world.
- Franklin Telecom
- Designs, markets, and manufactures communications products and subsystems, including WANs, LANs, and telecommunications equipment.
- Aplio
- Telephone system that allows customers to place long-distance phone calls over the Internet.
- Astrocom
- Specialists in digital data communication, WAN equipment, T1, and DDS CSU/DSUs. Designs and manufactures telecommunication equipment.
- Iwatsu America, Inc.
- Manufactures the Omega-Phone ADIX, ADIX ACD, ZT-D and ZT-S telecommunications systems for small and mid-size businesses.
- Force, Inc.
- Manufactures fibre optic video/audio/data transmission links for telecommunications, broadcast, ITS, and L-Band satellite applications.
- Nutmeg Utility Products
- Manufacturer, distributor, and service provider for telecommunications industry including test equipment, submersible pumps, lighting, safety equipment, hand tools, trailers.
- Plant Equipment, Inc.
- Manufactures telecommunication systems for the 9-1-1/public safety industry. From key telephones to computer integrated solutions, we offer a comprehensive product line.
- Turin Networks
- Provider of multiservice optical transport products for carriers.
- Himachal Futuristic Communications Ltd (HFCL)
- Manufacturer of telecom products, and provider of telecommunication services
- Meriton Networks
- Developing metro optical networking elements for transparent wavelength switching applications and services.
- NEC Corporation of America
- Technology provider of IT, network, and visual display products.
- Versadial Solutions
- Manufactures digital telephone logger systems, miscellaneous voice logging, and telephony software.
- Allied Analogic
- Manufactures an analogue data analyzer that translates telephone communications into standard ascii characters for display on a pc screen.
- Channell Commercial Corporation (1)
- Eldec Corporation
- Products for aerospace, defence and telecommunications applications. Products include proximity sensing systems, power systems and flowmeters.
- Nagano JRC
- Manufacturer of electronic products including telecommunication equipment, power supplies, and electronic parts.
- Nexus Incorporated
- Manufactures military and commercial audio connectors, jacks, and pushbutton switches.
 Ringtel Electronics (UK) Ltd
- Manufactures components including connectors and cabling.- Electronic Tele-Communications
- Maker of digital voice information platforms and related services.
- Multilink Technology Corporation
- Designs, develops, and markets advanced-mixed-signal integrated circuits, modules, and VLSI products for high-speed optical networking systems.
- Metrodata Communicating Solutions
- U.K. company manufacturing fibre converters and modems extenders along with HSSI and LVDS products with satellite and ATM network connectivity.
- iMPath Networks Inc.
- Communication products integrating video, voice and data on optical fibre.
- Proctor
- Maker of 911 systems, test equipment, long-loop adapters, line simulators, and exclusion modules.
- International Components Corporations (ICC)
- Manufactures portable appliances such as cellular phones and PDAs, rechargeable power supplies, and accessory products.
- Viewsonics, Inc.
- Broadband passive and digital amplifiers, oscillators, splitters, terminators, and testing equipment for CATV and telecommunication industries.
- Pribusin Inc.
- Process control instrumentation including signal conditioners, isolators, power supplies, and telemetry equipment.
- Audiosears Corporation
- Manufacturer of standard handsets, headsets, and component parts for telephone applications.
- Magnetek Telecom Power Systems
- Full engineer, furnish, and install (EF&I) company. Offers digital power products, battery systems, and other power solutions.
- Telesource, Inc.
- Remanufacturers of circuit-board technology, specialising in telecommunications,computer equipment, and cellular telephones.
- Telrad Telecommunications and Electronics Inc. (2)
- Mackenzie Laboratories, Inc.
- Designs and manufactures solid state digital audio, video, and text messaging equipment.
- Ditech (1)
- ABL
- Global company specialising in broadband communication products which enhance the delivery of video, audio and data services.
- Hendry Telephone Products
- Cabinets, racks, fuse panels cable management raceways, power supplies and power management subsystems for the telecommunications industry.
- Safari Technologies, Inc.
- Provides tools that tie teachers and students together via video-on-demand networking software and hardware.
- SVI Public
- Assembly services using surface mount (SMT), through hole (IMT) and chip on board (COB) technologies.
- RadioMate Corporation
- Offers radio, motorcycle, and telephone headsets and earsets.
- Positron@
- Insulators, testers, and other related products to protect, monitor, and maintain telephone wire-line facilities.
- System Engineering International
- Manufactures DSL and ISDN premise power products. Also provides DC and AC critical power services to the telecommunications industry.
- Ford Group of Nottingham
- Offers one stop for services in the construction, electrical, mechanical engineering, electronic and communications markets.
- Americable
- Supplies distributed network connectivity equipment and custom copper and fibre optic assemblies to telecommunications providers and premise networks nationwide.
- Taikan
- Offers house splitters, amplifiers, connectors, and more.
- WoodTel, Inc.
- Designs, manufactures, and markets a line of stand-alone microcontroller-based telecommunication switch/dialers as well as home automation and private branch exchange controllers.
- Efrat Future Technology Ltd.
- Messaging and communications equipment manufacturers.
- RE Technology
- Develops and manufactures codecs for contribution and distribution of audio and video signals.
- Chesilvale Electronics Limited
- Specialists in the design and supply of equipment used to deploy and maintain the fixed copper between two communicating entities.
- Paragon Solutions, Ltd
- Contract design and development service specialising in telecommunication product development.
- Equip'Trans
- French datacom products manufacturer. Long/short Haul modem, modem eliminator, sync./async. converters. Networking products.
- Newmar
- Manufactures communication power products, provides system integration, and consulting.
- Telsoft Inc.
- Manufactures telephone line powered dialers and test equipment.
- Seikosha, Inc.
- Designs and manufactures custom communication systems with applications in broadcasting, railways, electric power utilities and law enforcement.
- Kolker Systems, Inc.
- Manufacturer of telemarketing equipment.
- Smart Light Technology, Inc.
- Manufacturer of fibre optic components including couplers, WDMs, and coupler manufacturing workstations.
- General Jack Enterprise
- Manufacturer of telephone accessories including phone cords and connectors, ADSL splitters, patch cords, modular adapters, keystone jacks, wall plates, and others.
- Infinitec Communications, Inc.
- Designs and produces network transmission products.
- Miracom Industries Inc.
- Manufacturer of advanced telephony products and accessories.
- Multidyne Electronics, Inc.
- Manufacturer of fibre optics for video, audio and data, test signal and sync generators, distribution amplifiers, equalizers, routing switchers, and source identifiers.
- Engeltec Electronics
- Manufacturer of hands-free earphones for mobile phones, two-way radios, and other products.
- Tellabs Integrated Voice Products
- Telecommunications, speech enhancement, echo, echo cancellation, teleconferencing, and videoconferencing.
- Accedian Networks
- Packet performance solutions for service providers from Accedian Networks. Includes Ethernet/IP service loopback testing, demarcation, in-service performance validation and monitoring, and EtherNID demarc units.
- Hutech21
- Manufacturer of M/W, fibre optic, and high power RF repeaters.
- Remotek Corporation
- Cell phone repeater manufacturer. Features GSM repeaters, 3G repeaters, dual band repeaters, passive accessories, and remote monitoring systems.
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