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.

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.

Cisco Systems, Inc. is the worldwide leader in networking for the Internet. Today, networks are an essential part of business, education, government and home communications, and Cisco Internet Protocol-based (IP) networking solutions are the foundation of these networks. Cisco hardware, software, and service offerings are used to create Internet solutions that allow individuals, companies, and countries to increase productivity, improve customer satisfaction and strengthen competitive advantage. The Cisco name has become synonymous with the Internet, as well as with the productivity improvements that Internet business solutions provide. At Cisco, our vision is to change the way people work, live, play and learn.Cisco was founded in 1984 by a small group of computer scientists from Stanford University. Since the company's inception, Cisco engineers have been leaders in the development of Internet Protocol (IP)-based networking technologies. This tradition of innovation continues with industry-leading products in the core areas of routing and switching, as well as advanced technologies in areas such as Home Networking, IP Telephony, Optical, Network Security, Storage Networking and Wireless LAN.

Even the stars can benefit from Telestial when they travel abroad. The company offers pre-paid wireless telecommunications products and services to businesses in North America and recreational travelers. Partnering with local carriers around the globe, Telestial offers telecom services for use in over 140 countries, including international long-distance and mobile wireless service utilizing GSM (global services for mobile communications) networks.

Not all calls serviced by CloseCall America are of the near miss variety. The company is a telecommunications reseller offering voice and Internet services to primarily to residential customers in the Northeast and Midwest through agreements AT&T and Verizon. Its services include traditional local and long-distance telephone, DSL Internet access, wireless phone, and Voice over Internet Protocol (VoIP) computer telephony. CloseCall operates primarily in Delaware, Indiana, Maryland, New Jersey, Ohio, and Wisconsin. A subsidiary of MobilePro, the company agreed to be acquired by Birch Communications in 2010.

PCCW Limited, together with its subsidiaries, engages in the provision of telecommunications services primarily in Hong Kong, Mainland China, and the Asia Pacific region. It offers local, mobile, and international telecommunications services; Internet access services; interactive multimedia and pay-TV services; and computer, engineering, and other technical services. The company also engages in the investment and development of systems integration, network engineering, and technology-related businesses; and infrastructure and properties in Hong Kong, mainland China, the Asia Pacific, and the Middle East. In addition, it engages in the sale, rental, and resale of telecommunications equipment; sale of customer premises equipment and related solutions; conducting systems integration projects; and the provision of interactive multimedia services and publishing, customer relationship management solutions, customer contact management solutions and services, outsourced call center services, satellite- based and network-based telecommunications services, and global Internet Protocol based communication service.

Terremark Worldwide (NASDAQ:TMRK) is a leading global provider of IT infrastructure services delivered on the industry's most robust and advanced operations platform. Leveraging purpose-built datacenters in the United States, Europe and Latin America and access to massive and diverse network connectivity from more than 160 global carriers, Terremark delivers government, enterprise and Web 2.0 customers a comprehensive suite of managed solutions including managed hosting, colocation, network and security services. Terremark's acclaimed Infinistructure utility computing architecture has redefined industry standards for scalable and flexible computing infrastructure and its digitalOps service delivery platform combines end-to-end systems management workflow with a comprehensive customer portal.

Geos Communications (formerly known as i2 Telecom International) enables its customers to let their virtual fingers do the talking. The VoIP service and technology provider offers domestic and international long-distance calling over the Internet. The company has developed a software-based Internet phone device called VoiceStick, which plugs into any computer's USB port and allows phone calls over the Internet. Using the VoiceStick device and software, subscribers can call from their computers or from home and mobile phones through the company's service. The MyGlobalTalk application downloads to any cell phone and lets customers make international calls for a few cents per minute.

Hemisphere GPS designs and manufactures commercial and industrial global positioning systems. Its GPS products include navigational guidance systems and receiver modules. Hemisphere GPS's Ground Agriculture Group designs and manufactures products for precision farming and agriculture (enabling precision spraying of crops and navigation of machinery in fields), while its Air Agriculture Group specializes in the design and manufacture of GPS products for farmers, forestry workers, and firefighters. Hemisphere GPS company also offers specialty products through its Precision GPS Guidance Group, including DGPS integrated receivers, GPS compasses, antennas, and OEM modules.

Puerto Rico Telephone (PRT) has the island wired ... and wireless. The company provides nationwide fixed-line and wireless services to residential, government, and consumer customers in Puerto Rico and the Caribbean. PRT has more than 1 million combined landline and mobile subscribers, making it the island nation's largest telecommunications company in terms of customers. Wireless service is sold under the Claro brand. PRT also sells Internet access bundled with computer telephony service under the DMAX brand. The company, which began providing services in Puerto Rico in 1914, also offers long distance services. PRT is a subsidiary of Mexico City-based América Móvil.

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