Frank Krause

KEYMILE International GmbH operates as a holding company with interest in manufacturing data transmission systems. It offers customer services such as project planning and management, installation and commissioning, help in activating networks, support in operating and extending networks. The firm offers its services to the public telecommunications, mobile and professional radio and transport infrastructures. The company was founded in 1992 and is headquartered in Brunn am Gebirge, Austria.

AUVIDA GmbH provides IT solutions and is ultimately controlled by the Government of Belgium. The company is based in Friedrichsdorf, Germany.

MRV Communications, Inc. engages in designing, developing, and selling of products and services that enable customers to build networks. It operates through the following geographical segments: United States, Americas (Excluding the U.S.), Europe, and Asia Pacific. The company was founded by Shlomo Margalit in July 1988 and is headquartered Norcross, GA.

Part of Atecs Mannesmann AG, o.tel.o GmbH is a mobile phone service provider based in Cologne, Germany. The German company offers affordable mobile phone contracts and prepaid plans on the Vodafone network, as well as a range of popular smartphones from brands like Apple and Samsung. Customers can manage their accounts and get information about their plans through the Mein otelo app. In 1999, o.tel.o was acquired by Mannesmann Arcor AG & Co. from E.ON SE for $1,224.52 million.

Part of Triton V Luxco 87 SARL, Caverion Deutschland GmbH is a German company that engages in providing plumbing, heat, and air-conditioning installation services. The company is based in Munich, Germany. Frank Krause has been the CEO of the company since 2015.