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ERF Wireless, Inc. provides wireless broadband access solutions for the energy industry in North America. The company conducts its operations through Energy Broadband, Inc., Wireless Bundled Services Division, and Enterprise Network Services segments. It offers wireless bandwidth and related support services, including nomadic terrestrial wireless broadband circuit connectivity to the wellsite; wellsite communications equipment rental; wellsite IT support services; wellsite IT services over broadband; network monitoring and maintenance:; layer 2 secure communications connectivity products rental and services; fixed site terrestrial wireless broadband connectivity; network design and construction; production field supervisory control and data acquisition; and midstream communications, monitoring, and security solutions for the oil and gas industry. The company also provides enterprise-level wireless bandwidth product and services, such as design and implementation of custom Internet wireless bandwidth solutions, including long-term maintenance and network monitoring; reselling arrangements; and secure connectivity services through its CryptoVue product to the regional banking, healthcare, and educational sectors primarily in the rural areas of North America. In addition, it offers commercial and residential wireless bandwidth products and services comprising -speed Internet, voice over Internet protocol services, network monitoring and maintenance services, and video services to commercial businesses and residential customers. The company was founded in 1986 and is headquartered in League City, Texas.

Telefônica Brasil S.A., together with its subsidiaries, operates as a mobile telecommunications company in Brazil. Its fixed line services portfolio includes local, domestic long-distance, and international long-distance calls; and mobile portfolio comprises voice and broadband internet access through 3G, 4G, 4.5G, and 5G, as well as mobile value-added and wireless roaming services. The company also offers data services, including broadband and mobile data services. In addition, it provides pay TV services through IPTV technologies; network services, such as rental of facilities; other services comprising internet access, private network connectivity, computer equipment leasing, extended service, caller identification, voice mail, cellular blocker, and others; wholesale services, including interconnection services to users of other network providers; and digital services, such as entertainment, cloud, and security and financial services. Further, the company offers multimedia communication services, which include audio, data, voice and other sounds, images, texts, and other information, as well as sells devices, such as smartphones, broadband USB modems, and other devices. Additionally, it provides telecommunications solutions and IT support to various industries, such as retail, manufacturing, services, financial institutions, government, etc. It markets and sells its solutions through own stores, dealers, retail and distribution channels, door-to-door sales, and outbound tele sales. The company was formerly known as Telecomunicações de São Paulo S.A. - TELESP and changed its name to Telefônica Brasil S.A. in October 2011. The company was incorporated in 1998 and is headquartered in São Paulo, Brazil.