Check Communications Limited company was established in 1990 by managing director Geoff Wellings. Computer telephony systems. Check. High-speed data delivery services. Check. Systems maintenance. Check. Or more specifically, Check Communications. The company distributes, installs, and maintains telecommunications systems for such businesses as auto dealers, retailers, and utilities providers. Services include systems design, project management, and on-site maintenance for voice and data communications equipment, as well as audio visual and video surveillance gear. Check Communications supplies products from such manufacturers as Aastra and Inter-Tel.

Princeton Lightwave was spun off from SRI International subsidiary Sarnoff Corp. in 2000. The company's financial backers include Morgenthaler, U.S. Venture Partners, and Venrock Associates. Princeton Lightwave is educated in the ways of wavelengths. The company develops distributed feedback, erbium-doped fiber amplifier, and Raman pump lasers used in optical transmission. Princeton's lines of WavePower and WaveHarp laser components are intended to be incorporated into fiber-optic equipment, such as dense wavelength division multiplexing devices, built by other manufacturers. Its WaveRider amplifier chips are used to boost the power of lasers.

Though the Greek government's telecommunications monopoly might have come to a tragic end, Hellenic Telecommunications (OTE) is still the biggest player on its home stage. OTE has about 7 million fixed access lines in service and provides local, long-distance, and international telephone calling. It also offers broadband Internet services (through ISP OTEnet) to more than 800,000 residential and business customers. Other wired services include leased lines, data hosting, and wholesale telecom services. Subsidiary Cosmote provides wireless service to more than 6 million subscribers on its GSM-based network. OTE's international holdings include subsidiaries in Albania, Bulgaria, Romania, and Serbia.

Onvoy Voice Services is a wholly-owned subsidiary of Zayo Group Holdings, Inc. After the divestiture of AT&T MEANS was started by a consortium of Independent Local Exchange Carriers to connect Independent LECS to long-distance carriers and later became Onvoy. Onvoy has been offering a full suite of wholesale services to wireless, wireline, cable and broadband telephone companies since 1992.Onvoy Voice Services is headquartered in Minnesota and offers telecommunication services across the country.

Iwatsu Electric was founded in 1938. From analog to digital, telecommunications pioneer Iwatsu Electric has moved its technology with the times. The company sells VoIP telephones for small offices and headsets for switchboard operators and TV/radio studios; test and measurement equipment, such as oscilloscopes and Blu-ray disc inspection machines; and hardware for the printing industry, such as ink jet platesetters. Major customers include Japan's Ministry of Defense, the Japan Post Office, J-Power, and broadcasting corporation NHK.

Elisa is in a race for the Finnish. A leading communications services provider in Finland, Elisa company provides consumers, businesses, and government agencies with fixed and mobile voice, broadband Internet, and cable television services. It also provides IT consulting and integration services and resells mobile phones, computers, and peripherals. In addition to its operations in Finland, the company provides a full range of telecom services in Estonia. Elisa serves additional international customers through its partnerships with Vodafone and Telenor.

Thorlabs Quantum Electronics (formerly Covega Corporation) makes optical components, modules, and subsystems used in the telecommunications, industrial, medical, defense, and test and measurement industries. Covega's intensity modulators, laser diode controllers, optical amplifiers, and semiconductor lasers are incorporated into equipment such as Internet routers and network test equipment. Its products are sold through distributors, including Mitsui and Laser2000.Thorlabs Quantum Electronics company was acquired in 2008 by Fremont, California-based Gemfire Corporation and again in 2009 by Thorlabs Inc. of Newton, New Jersey. Covega was formed in 2003 by the merger of CODEON Corporation and Quantum Photonics.

Saigon Post and Telecommunications Services Corporation, known as Saigon Postel, provides telecom and postal services throughout Vietnam. It offers fixed and wireless telephone, Internet, international shipping, money transfer, and voice- over-IP telephone services to individuals and commercial customers. Saigon Postel also manufactures and distributes telecom network equipment and builds and maintains its network infrastructure.

Vodafone Ireland handes cell phone service on the Emerald Isle for parent company, Vodafone Group. The company is the #1 wireless operator in the country, with about 2 million consumer and corporate customers. It provides mobile voice, Internet, and data services including text messaging and Wi- fi hotspot access over its 3G wireless network. Vodafone Ireland also offers landline connections and fixed broadband for its business customers. As part of its voice and data plans, the company resells phones and wireless-enabled laptop computers from such vendors as Dell, Nokia, and Research in Motion.

Momentum Telecom knows that for businesses, or personal relationships, to build up enough steam to succeed, they need to stay connected. The competitive local-exchange carrier (CLEC) provides local and long-distance telephone service to about 150,000 residential (under the Family brand) and business (under the Edge banner) customers primarily in nine southeastern US states. Its data services include dial-up Internet access for residential subscribers and broadband Internet service for businesses; Momentum also offers digital voice service for corporate clients. Top customers have included regional communications provider NexHorizon Communications which resells Momentum digital voice service under its own brand.

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