ZTE Corporation is one of China's largest telecommunications manufacturers. ZTE offers a variety of telecom hardware, including base stations, phones, and systems for switching, optical transport, videoconferencing, power supply, and monitoring. The company sells more than 10 million handsets a year, making it one of the biggest telecommunications equipment exporters in China. China Unicom used ZTE's products in a network construction project that spanned 18 provinces. ZTE was founded in 1985 as Zhongxing Semiconductor Co., Ltd. The company operates manufacturing facilities in 50 countries, with major production operations located in Brazil, Sweden, and the US.

United States Cellular takes calls from sea to shining sea. Doing business as U.S. Cellular, the company provides wireless phone service to about 6 million customers in more than two dozen states in the US, largely in the Midwest and the South, where it has nearly 4 million customers. Its products and services -- marketed directly, through the Internet, and from about 400 retail stores -- include mobile messaging, prepaid calling, international long distance, mobile Internet, and directory assistance. U.S. Cellular service is also sold through contracts with resellers. The company offers phones from HTC, LG Electronics, Research In Motion, and Samsung Electronics, among other vendors.

XETA Technologies might be there with you. XETA Technologies distributes and installs phone, messaging, and contact management systems made by Avaya and Mitel Networks, as well as data networking products made by Avaya, Cisco, and Hewlett-Packard. It sells communications equipment to the hospitality industry, including its own line of call accounting products capable of tracking phone usage data. Additionally, XETA provides network consulting and installation services and offers managed service contracts for maintenance and upgrades to Nortel systems. Its customers have included Marriott International, Pepsi, and Time Warner.

T-Mobile (UK) boasts about 17 million customers for its wireless telephone network. A subsidiary of Germany's Deutsche Telekom, its core services are voice calling and text messaging in the UK, as well as international calling. T-Mobile (UK) also has about half a million subscribers to its mobile Internet services which include email, Web browsing, and video. It sells primarily to consumers both online and through retail shops located throughout the UK. Along with affiliates in Germany and Poland, T-Mobile (UK) is one of its parent's largest European wireless businesses. Formerly a subsidiary of T-Mobile International, the company became a direct subsidiary of Deutsche Telekom following a 2009 restructuring.

American Tower (NYSE: AMT) is a leading independent owner and operator of wireless and broadcast communication sites. Our global portfolio includes approximately 30,000 owned or managed sites and is experiencing steady growth. In addition to leasing space on towers, we provide customized collocation solutions through our Distributed Antenna Systems (DAS) that support seamless in-building and outdoor wireless coverage.Headquartered in Boston, Massachusetts, American Tower has local offices across the United States and in Mexico, Brazil, India and the United Kingdom.

Optical Cable Corporation was founded in 1983 and is headquartered in Roanoke, Virginia. Optical Cable Corporation provides fiber optic and copper data communications cabling and connectivity solutions primarily for the enterprise market in the United States and internationally. It designs, manufactures, markets, and sells fiber optic cable products that include A-series assembly fiber optic cables for jumpers and pigtails; B- series breakout fiber optic cables for in campus and industrial complex installations; D-Series fiber optic cables for longer distance, buried, and over head applications; and G-series subgrouping fiber optic cables. The company also markets and sells copper datacom cable products, including unshielded twisted pair and shielded twisted pair. In addition, Optical Cable Corporation designs, manufactures, markets, and sells fiber optic enterprise connectivity products that provide a range of fiber distribution solutions for the equipment room, telecommunication closet, datacenter, and workstation; copper enterprise connectivity products, which offer customers a line of copper connectivity components necessary for the equipment room, telecommunications closet, datacenter, and workstation; rack solutions that provide an array of network, data storage, and telecommunications management systems for commercial and residential uses; and residential systems, which offer wiring products designed for single dwelling and multiple dwelling residential uses. Further, it designs, manufactures, markets, and sells applied interconnect systems, including specialty fiber optic connectors and connectivity components, ruggedized copper datacom connectors, and related systems and solutions for the military and harsh environment applications. Its products also have applications in industrial, mining, and broadcast applications. Optical Cable Corporation sells its products to various distributors, original equipment manufacturers, resellers, and end-users.

Terabit hopes to build a better router (or at least cobble a better one together). The company, which is conducting research and development for the US Department of Defense (through DARPA), is developing a commercial products it calls "metarouters" that combine off-the-shelf network data routers into larger systems using its proprietary network switches and software. Based on an IP standard, metarouters provide the architecture for a scalable network that handles integrated data, voice, and video without requiring specialized hardware.

TP Group is the largest telecommunications group in Central Europe, operating in all segments of the Polish telephony and communications industry. The Group owns the largest technical infrastructure in Poland, with operations in fixed-line voice, data and mobile networks, radio communication and satellite transmission.TP Group's goal is to deliver outstanding customer satisfaction and attractive shareholder remuneration by being the first choice provider of telecommunication, media and entertainment services, through state-of-the-art and cost-effective technologies.

Airspan Networks covers a lot of ground, mostly through the air. Airspan Networks company supplies equipment based on the WiMax wireless networking standard. Phone companies, ISPs, utility companies, and other network operators use Airspan's base stations and subscriber terminals to provide fixed and mobile broadband wireless access. The company's other products include Wi-Fi-based networking equipment, as well as voice-over-IP (VoIP) soft switches and gateways. Airspan sells directly and through OEMs, resellers and systems integrators to customers worldwide. The vast majority of the company's sales are to customers outside the US.

Xfone USA offers alternative local and long-distance services to residential and business customers primarily in the south central and eastern US. The company is certified as a competitive local-exchange carrier in Louisiana, Texas, and its home state of Mississippi. In addition to traditional phone services, Xfone USA offers cable TV and broadband Internet access. Commercial clients include planned communities and apartment buildings. The company also provides such business-oriented services as Web design and hosting, as well as data network maintenance and support. Xfone USA is a subsidiary of Texas-based Xfone Inc.

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