American multinational, conglomerate of companies and management company based in Whitacre Tower in Downtown Dallas, Texas.4 It is the world's largest telecommunications company, the largest provider of 4G, 4.5G and 5G services, mobile phones and the largest provider largest landline phone service in the United States through AT&T Communications.

Claro is a Brazilian-Mexican brand of communications services present throughout Latin America, owned by the Mexican company América Móvil.

Telefónica S.A. is a Spanish multinational telecommunications company, headquartered in Madrid, Spain, ranked as the most important telecommunications company in Europe and the fifth in the world.

Lumen Technologies is an American telecommunications company based in Monroe, Louisiana. It is a member of the S&P 500 and Fortune 500. Its communications services include local and long distance telephony, internet, private networks, data transmission.

Entel S.A. is a telecommunications company founded in Chile, with a presence in Peru. It is today one of the largest telecommunications companies in Chile, with a presence in information technology services, cellular and fixed telephony, long distance carrier, among other services.

Telecom Fibertel Argentina S.A. is a telecommunications company that operates in Argentina, Paraguay and Uruguay. It offers national and international fixed telephony, public telephony, Direct Incoming Dialing (DDE), centrex, point-to-point lines, 0800 and 0810, telecentres and single channels. It also offers home internet access through various technologies (FTTH, HFC, VDSL, ADSL) with Fibertel, mobile telephony with Personal and television with Cablevision.

Infinera Corporation is a Sunnyvale, California-based vertically integrated manufacturer of Wavelength division multiplexing (WDM)-based packet optical transmission equipment and IP transport technologies for the telecommunications service provider market. It is a pioneer in design and manufacture of large-scale photonic integrated circuits (PICs).

The Instituto Costarricense de Electricidad is a state company that provides electricity and telecommunications services in Costa Rica. It is part of the ICE Group together with Radiográfica Costarricense S.A., the Compañía Nacional de Fuerza y ​​Luz y Gestión Cobro S.A.

Juniper Networks provides high-performance networking & cybersecurity solutions to service providers, enterprise companies & public sector organizations.

Swedish multinational company dedicated to offering telecommunications equipment and solutions, mainly in the fields of telephony, mobile telephony, multimedia communications and the Internet.

NEC Corporation is a Japanese multinational technology and communications company headquartered in Minato-ku, Tokyo. NEC provides IT solutions and communications solutions to business and government.

IBM is a leading cloud platform and cognitive solutions company. Restlessly reinventing since 1911, we are the largest technology and consulting employer in the world, with more than 350,000 employees serving clients in 170 countries.

Nokia Corporation is a multinational communications and technology company based in the Keilaniemi district of Espoo, Finland. It is made up of two business groups: Nokia Networks and Nokia Technologies.