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Dataflex Design Communications keeps communications flexible and up to date. Dataflex Design Communications designs and distributes equipment used for VoIP or voice over Internet protocol. The company's products, which are manufactured in Asia, enable the transmission of voice, data, and video over the Internet, wide area networks (WAN), and voice lines. Dataflex designs its products for telephone companies and service providers; it serves customers in Europe, South America, and Australia. In addition to its products, the company also offers services including system management and training. Dataflex systems are compatible with equipment made by other manufacturers including Alcatel-Lucent, Cisco, and Fujitsu.

Dialog Semiconductor keeps all sorts of electronic devices talking to each other. Dialog Semiconductor develops mixed- signal (analog plus digital) chips used in wireless communications, audio, automotive, industrial, and other applications. Dialog, which outsources its manufacturing, specializes in audio codecs (coder/decoders) and power management chips for mobile phones, including smartphones. Customers include Apple, Bosch, and Sony Ericsson. Dialog Semiconductor has operations in Austria, China, Germany, Japan, South Korea, Taiwan, the UK, and the US; about two- thirds of sales come from from the Asia/Pacific region, primarily China.

Digicel Jamaica keeps its citizens connected by mobile phone. The wireless telecommunications company offers popular mobile phones such as Blackberry and Nokia models, mobile phone plans covering voice, messaging, and data, as well as the fastest 4G wireless broadband Internet service in Jamaica. Mobile phones are sold through the Digicel website and through partner retail stores across the country. From Negril to St. Thomas, Digicel Jamaica's service covers about 99% of the population. The company is a subsidiary of Bermuda-incorporated holding company Digicel Group Limited, which boasts about 11 million customers across more than 30 markets in the Caribbean, Central America, and the Pacific.

Drillisch is one of Germany's leading telecom service providers. Mobile communications, its core business, is provided through subsidiaries Drillisch Telecom and simply Communication. Drillisch company serves more than two million wireless phone and Internet customers under several brand names, including Alphatel and Victorvox. As a reseller, the company buys wireless services from such companies as Vodafone and E-Plus and sells them to retail and corporate customers. In a related business, its subsidiary IQ-Optimize Software provides billing processes software for the mobile communications and mobile Internet industries.

EF Johnson is secure with how it communicates. EF Johnson Technologies makes radio and radio-security systems for police departments, government agencies, the military, and service providers. Its EF Johnson-branded products include handheld and mobile radios, base stations, and signal repeaters. Sold as aftermarket add-ons, its Transcrypt- branded products include security modules that encrypt and decode radio and wireless phone signals to prevent eavesdropping. The company's 3e Technologies line consists of secure Wi-Fi and software products, primarily for government and military customers. In 2010 Francisco Partners took EF Johnson private in a deal valued at about $40 million.

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