Portugal Telecom is the Portuguese market leader for fixed- line and mobile phone services. The company's primary mobile phone interests include Telecomunicações Móveis Nacionais, or TMN, the domestic provider. It also owns stakes in international telecom companies, including the Vivo joint venture with Telefónica Móviles, which is the leading wireless communications provider in Brazil. Portugal Telecom's fixed-line segment, PT Comunicações, provides domestic and international phone services and corporate Internet services. Portugal Telecom also provides interconnections and leases lines to other Portuguese carriers.

Stealth Microwave makes single- and multi-carrier radio frequency amplifiers used in wireless communications systems. The company was founded in 1996. Micronetics acquired Stealth Microwave in June 2005 for $6.5 million in cash, plus another $3 million in future earnout payments. Stealth Microwave operates as a wholly owned subsidiary of Micronetics.

ClearOne Communications, Inc. operates as a communications solutions company that develops and sells audio conferencing, collaboration, streaming media, and connectivity systems and other related products for audio, video, and web applications. It develops, manufactures, markets, and services a line of audio conferencing products under personal, tabletop, premium, and professional (installed audio) categories. The company, through its subsidiary, NetStreams, Inc., delivers the Internet protocol (IP) A/V experience by distributing high definition audio and video over TCP/IP networks. Its digital streaming media and control systems support virtually various digital or analog sources, including high definition audio and video content to an unlimited number of networked end points. NetStreams' StreamNet technology provides solutions for streaming media and control applications, such as digital signage, distribution of HD video and audio, LAN Cloud Matrix Switching, and audio paging over data networks. The company’s conferencing & collaboration products are used by organizations of all sizes to accomplish group communication; and networked media and control distribution systems are used by a range of customers from individual residential users to large enterprises. Its end-users include large companies and institutions, small and medium sized businesses, educational institutions, and government organizations, as well as individual consumers. The company sells its products to end-users primarily through a network of independent distributors and resellers, as well as directly to dealers, systems integrators, value-added resellers, and end-users. ClearOne Communications, Inc. was founded in 1983 and is headquartered in Salt Lake City, Utah.

Wireless Telecom Group sure makes a lot of it. Wireless Telecom company, which markets its products under the brand name Noisecom, makes electronic noise generators for wireless telecommunications systems. Its products are used to test whether such systems can receive transmitted information. Its noise emulator products also operate in radar and satellite systems to continually monitor and test receivers or to jam signals. Wireless Telecom's Boonton Electronics subsidiary makes radio-frequency (RF) and microwave test equipment. Its Microlab subsidiary makes high-power, passive microwave components. Wireless Telecom Group gets nearly one-third of sales from outside the Americas region.

U.S. National Telecom, Inc. does not have significant operations. It intends to seek, investigate, and acquire an interest in business opportunities in the real estate and the telecommunications sector except radio. The company was formerly known as Yi Wan Group, Inc. and changed its name to U.S. National Telecom, Inc. in September 2007. U.S. National Telecom was founded in 1999 and is headquartered in Denver, Colorado.

Redstone's bedrock business is providing telecom systems and IT services to businesses and public agencies in the UK. The company offers systems design, installation, and support services for voice and data communications systems. It also specializes in systems that integrate building access control and closed circuit TV functions. Redstone also offers managed network security services and server and data storage products distribution. The company is divesting non- core businesses to focus on higher margin areas. It sold its telecom unit (including its Symphony Holdings subsidiary) to Daisy Group for £17 million in 2009 and the telephone maintanence arm of its Marcom subsidiary to Maintel in 2010.

Sepura talks the radio talk, and walks the radio walk. One of the top manufacturers in its industry, Sepura makes digital commercial two-way TETRA (Terrestrial Trunked Radio) radios used by emergency and police personnel, the military, and transportation agencies. The radios, informally known as walkie-talkies, are used on TETRA networks in about 90 countries, particularly in Europe, Asia, and South America. In addition to ambulance, fire, and other emergency responders, the company's customers include commercial users such as Air France, Saudi Electricity Company, and Russian Railways; all in all, the company serves more than 800 organizations. CEO Graham Matthews and other investors co- founded Sepura in 2002.

Since 1998, NetworkIP has offered prepaid services with the best combination of usage-based pricing, call quality and innovative technologies, along with customer service, business management and reporting tools — all from a reliable network that processes over 6 million calls per day. Our customers can run an entire business — from facilities, to billing, to back-office — on NetworkIP’s award-winning, Hosted Services Platform with no capital or back-office investment.

EVS acquired France-based OpenCube in 2010 in order to expand its technology portfolio. EVS Broadcast Equipment makes digital broadcast equipment, working without videotape to capture and distribute images. The company designs media servers and the associated software and production networks for the television and motion picture industries. More than 2,000 operators use its equipment and applications. The company's equipment has been used in broadcasts of such events as the Academy Awards and the Olympic Games. The EVS Group's roots are in sports television, which remains its core business. EVS Broadcast Equipment S.A. company has ventured into digital movie distribution and theater exhibition through its XDC affiliate.

ARRIS Group company was founded in 1969 and is headquartered in Suwanee, Georgia. ARRIS Group, Inc. develops, manufactures, and supplies telephony, data, video, construction, rebuild, and maintenance equipment for the broadband communications industry worldwide. It operates in three segments: Broadband Communications Systems (BCS); Access, Transport, & Supplies (ATS); and Media & Communications Systems (MCS). The BCS segment offers VOIP and high speed data products, including CMTS edge router, 2- line residential EMTA, multi-line EMTA for residential and commercial services, wireless gateway EMTA, and high speed data cable modems; and video/IP products, such as CMTS edge router, universal EdgeQAM, and whole home DVR. It also provides video processing products that comprise digital video encoders and multiplexers; and transcoders, transraters, and statistical multiplexers. The ATS segment offers hybrid fiber-coaxial plant equipment products comprising headend and hub products, optical transmitters, optical amplifiers, optical repeaters, optical nodes, ePON optical network units, ePON optical line terminals, RF over glass optical network units, and radio frequency products; and infrastructure products for fiber optic or coaxial networks, including cable and strand, vaults, conduit, drop materials, tools, connectors, and test equipment. The MCS segment offers content and operations management systems, such as products for video on demand, ad insertion, and digital advertising; operations management systems, including products for service assurance, service fulfillment, and mobile workforce management; and fixed mobile convergence network comprising products for mobility application server for continuity of services across wireless and packetcable networks, and voice call continuity application server for continuity of services in IP multimedia subsystem networks. ARRIS markets its products primarily to cable system operators and multiple system operators.

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