TeleCity gives cyberspace a home with four walls, a roof, and all the amenities. The company operates Internet facilities and data centers with such services as secure colocation of servers and connections to multiple telecommunications carriers. TeleCity has more than 600 clients, including ISPs, application service providers, and data-centric telecommunication carriers, as well as enterprise clients such as Xchanging and Toys R Us. The company has more than 20 data centers in Dublin, London, and Manchester in the UK, as well as in Amsterdam, Frankfurt, Milan, Paris, and Stockholm.

SECURUS Technologies enables phone service for people who have a lot of time on their hands.SECURUS Technologies company primarily provides telecommunications services to about 2,200 correctional facilities across the US. It designs, installs, and maintains telecom systems that enable collect, prepaid, and debit calling for inmates. Other back- office services include billing and collection, call validation, and fraud management. Clients include city, state, and county jails, as well as juvenile detention institutions and private jails. The company's call connection services are made possible through contracts with regional and local exchange carriers. SECURUS is controlled by its majority owner, investment firm H.I.G. Capital.

MTN Group offers cellular phone service in the mountains and the plains of Africa. The continent's largest wireless network operator has almost 130 million subscribers across Africa and the Middle East, through a network of subsidiaries. MTN has operations in more than 20 countries and enjoys a 50% market share in Nigeria and a 40% share in Iran, its two largest markets. Eighty percent of its customers have prepaid, no-contract plans. MTN earns the bulk of its sales from airtime and subscription fees, but it generates about 20% of revenues from interconnect fees.MTN Group company offers mobile banking services with Standard Bank and money transfer services for clients without bank accounts.

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.

Nippon COMSYS is an engineering and construction company with a primary focus on telecommunications infrastructure services such as fiber-optic cable installation, cable tunnel construction, and wireless communications base station construction. The company's other operations include general civil engineering, building construction, supplies procurement, as well as IT services such as systems integration, network design, and project management. Nippon COMSYS is a subsidiary of holding company COMSYS Holdings.

Public Communications Services (PCS) designs and installs inmate telephone systems for state, federal, and county correctional facilities across the US. Its systems feature collect, pre-paid, and debit calling, as well as automated call processing and security features like blocking of certain phone numbers. Clients can also use the company's proprietary systems management software, called SOPHIA, to run reports on inmate usage and to monitor and record conversations. Customers include the Ventura County, California Sheriff's Department and the Federal Bureau of Prisons.

With Eagle Teleconferencing Services, being out of town isn't an excuse to miss a meeting. The company provides reservationless and operator-assisted audio- and video- conferencing services in the US and in France, Germany, Italy, and the UK. It also offers media streaming services and Web collaboration solutions, allowing users to make presentations and broadcast video over the Internet. Eagle Teleconferencing serves such industries as software, business consulting, and telecommunications. The company was founded in 1986.

Chess was established in 1993, Chess has used a combination of skill, experience, innovation and exceptional customer service to deliver great value, quality communications solutions to Uk businesses. Our rapid growth, alongside an ongoing commitment to the core values of quality and spirit means Chess is known as one of the UK's leading business telecoms providers. Our focused growth strategy is built on the principles of honesty and integrity and there is an energetic, innovative and inspiring spirit at the heart of the business. This has earnt us an excellent reputation in the industry with our business customers, as well as considerable award success.

Thales Communications has an ear for high-end radio gear. The company makes secure radio equipment -- specializing in small lightweight radio systems. Its software-based radio products include MBITR (multi-band inter/intra team radio for government programs), high-frequency RF systems, JEM (Joint Tactical Radio System Enhanced MBITR), and Thales 25 (handheld radio for both commercial and government customers). Thales Communications tailors its products for tactical, naval and maritime, and aerospace applications. It serves the US military, federal law enforcement agencies, and military forces of other allied nations. The company is a subsidiary of French aerospace and defense electronics manufacturer Thales.

Telephonics helps its clients place calls from helicopters, among other places. The company makes communications equipment for military and commercial customers. It specializes in maritime and military surveillance and targeting radar; headsets and microphones for aerospace applications; wireless communications and audio distribution systems for military and mass transit vehicles; and electronic components to enable such functions as flight crew intercoms and video monitoring. The company's equipment is used for applications including air traffic control, missile defense guidance, and search and rescue. Clients have included the US Air Force and Lockheed Martin. Telephonics is a subsidiary of Griffon.

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