David Williams

SBC Communications, Inc. provides telecommunications services primarily in the United States. It offers various services and products, such as local exchange services, wireless communications, long-distance services, Internet services, telecommunications equipment, and directory advertising and publishing services. The company provides landline telecommunications services, such as local, long-distance voice, switched access, data and messaging services, and satellite television services; mobile wireless voice and data communications services; and directory services, such as advertising, Yellow and White Pages directories, and electronic directory publishing

WiMAX Forum, Inc. provides and promotes compatibility and interoperability of broadband wireless products. It also provides fixed, nomadic and portable mobile wireless broadband connectivity. The company was founded in June, 2001 and is headquartered in Mountain View, CA

GSM Association functions as a association representing interest of mobile operators. It offers programs and advocacy initiatives including future networks, identity, and internet of things, industry purpose, mobile for development, spectrum and the mobile economy. The company was founded in 1982 and is headquartered in London, the United Kingdom.

Stoke, Inc. provides mobile broadband gateway solutions. Its delivers gateway solutions for the mobile border, securing LTE communications between the radio access network and the operator core, protecting subscribers while safeguarding critical mobile core infrastructure. The company was founded in 2004 by Randall J. Kruep and is headquartered in Santa Clara, CA.

Velocita Wireless LLC provides wireless data products and services. Its products include wireless email, messaging, machine-to-machine, automated vehicle location, and automation applications. The company was founded in 1988 and is headquartered in Woodbridge, NJ

Vodafone US, Inc. operates as a holding company which provides telecommunication and IT services. The company was founded on April 1, 1994 and is headquartered in New York, NY.

Telefónica Europe Plc operates as a mobile communication services company. It offers integrated mobile, fixed, and broadband services. The firm provides mobile telecommunications services using universal mobile telecommunications system, general packet radio services, and fixed line systems. The company was founded on December 10, 2004 and is headquartered in Slough, the United Kingdom.