Gregoris Anastasiadis

Vodafone Holding GmbH provides mobile telecommunications services such as voice and data communications. It operates a digital network based on the GSM standard. The company is headquartered in Dusseldorf, Germany.

Arthur Andersen LLP used to provide accounting services. It was also into consulting services for clients that operate businesses throughout the United States and around the world. Arthur Andersen was founded in 1913 and was headquartered in Chicago, IL.

Ericsson Telecommunicações SA manufactures and sells telecommunication equipment. It offers stored program control telephone exchanges, crossbar exchanges, telephone sets, and transmission equipment for telephone networks. The company was founded by L. M. Ericsson in 1924 and is headquartered in Sao Paulo, Brazil.

Part of Zuivelcoöperatie FrieslandCampina UA, Friesland Hellas SA is a Greek company. The company is located in Greece.

On Telecoms was the first telecoms provider to offer triple play services in Greece. It offers a wide range of innovative telephony, internet and digital TV (IPTV) services to residential customers, small business and enterprises. The company welcomed its first customer on March 2007 and since then it is constantly evolving to offer innovative services and quality support. Its presence changed the Greek telecoms market; in a very short time since its founding, it completed the development of its proprietary network infrastructure in Athens, using next-generation technology. On November 2009 it expanded in Thessaloniki. On October 2009 it acquired Vivodi Telecom and achieved the operational integration of the two companies within a few months. The company is the telecommunication provider with the most integrated and viable solution in Greece. Its customers can choose the combination of fixed telephony, internet and TV that suits their needs best, at the most competitive prices.