Telecommunications companies

giffgaff (formerly known as O2 Ash) is a mobile virtual network operator.

SK telesys (formerly known as NSI Technology) is a company specialized in producing and supplying communications network systems.

Nortel is a company that provides telecommunication solutions for businesses.

MER Group (also known as C. MER INDUSTRIES) is a provider of telecommunication and technology-based solutions.

Red Electrica Corporacion is engaged in the energy sector and focuses on the management of the high-voltage transmission grid, development, maintenance and improvement of the network’s installations.

Silex Microsystems is a company that manufactures micro-electro-mechanical systems.

Global Marine is a provider of engineering and underwater services.

ShoreTel, Inc. is a telecommunications vendor providing unified communications for business.

First Media (formerly known as Broadband Multimedia) is a company that provides telecommunication services.

Lattice Incorporated is a provider of advanced information and communications technology solutions to the government and commercial sectors.

Qtech is a developer and manufacturer of telecommunications and information technology (IT) equipment.

ASTEL JSC is a provider of digital solutions and telecommunications services.