SOMOS GmbH is a German private company located in Frankfurt that provides labor recruitment services. Manuel Krug and Dirk Smith are the current co-CEOs of the firm.

CollegeNET, Inc. develops web based technology system. The firm’s products are used in admissions, scheduling, course evaluation and surveys, accounts optimization, non-profit, and international student. It provides its services in some colleges, universities, and non profit institutions. The company was founded by Jim Wolfston in 1979 and is headquartered in Portland, OR.

AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company, the largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications. Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue. As of 2018, AT&T is ranked #9 on the Fortune 500 rankings of the largest United States corporations by total revenue.

Designs and builds a wide range of public and private networks, communications systems and software, and data networking systems, as well as telephone systems and microelectronic components

Provider of a software platform for advanced voice applications. The company's flagship Voice Web Application Platform enables both wireline and wireless service providers to deliver advanced, business-centric voice applications. By leveraging new technologies like Voice XML customer service, commerce transaction, and self-service applications provide a more personalized and interactive caller experience, and ensure that mobile corporate users have equal access to time-critical business and customer information.

Nortel Networks has hung up on the telecom sector. Once one of the largest makers of telecommunications equipment in North America, it filed for bankruptcy protection in 2009 and is in the process of liquidating its assets. The company made core network switching, wireless, and optical systems for network operators. Its wireline and enterprise network equipment included systems for digital voice and data switching, routing, and call center communications. Wireless products included cellular base stations and controllers. The company also made such long-haul fiber-optic products as multiplexers. Nortel is currently focused on selling off its remaining businesses and intellectual property and winding down all operations. Today, Nortel's Metro Ethernet Networks segment provides carrier Ethernet switching, optical networking, and multi-service switching products.

The idea for LanguageLine Solutions began when Jeff Munks and Mike McFerrin, founders of LanguageLine Solutions, were inspired to develop a more effective method for communication with non-English proficient individuals. While serving as a police officer in San Jose, CA, Jeff responded to an urgent call one night from a man who didn’t speak English. He arrived at the scene uncertain of the situation and any potential danger awaiting him. Luckily, he was able to resolve the confusion and call an ambulance for the man’s son who was having trouble breathing. Although Jeff was able to help the man, he knew others might not always be so fortunate in the same scenario and was determined to find a better way to connect individuals regardless of their native language.

MyMedicalRecords, Inc. provides web-based personal health record and vital document storage solutions. It includes documents, images, and voice mail messages to be transmitted in and out of the MMR system using a variety of methods like fax, file upload, and email. The company was founded by Russel Armstrong and Robert H. Lorsch in 2005 and is headquartered in Los Angeles, CA.

Level 3 Communications is a premier global communications provider headquartered in Broomfield, Colorado, that provides communications services to enterprise, government and carrier customers. Anchored by extensive fiber networks on three continents and connected by undersea facilities, their global services platform features deep metro assets reaching more than 500 markets in more than 60 countries. Level 3’s global network reliably and securely provides enhanced, scalable network capabilities to address the increasingly complex operating environment of today’s technology landscape. They take end-to-end responsibility for monitoring and maintaining the network. They listen to what you need and engineer solutions to your specifications. Their comprehensive portfolio of data, security, video, voice and unified communications solutions provide powerful options to address your most difficult IT challenges. They can help you grow your business, expand into new markets and improve the efficiency of your operations. Because when it comes to your success, they believe it’s just as much their responsibility as it is yours.

Part of Verizon Communications, Inc., MCI Communications Corp. is an American company located in Washington, DC, that provides telecommunications services. MCI, Inc. acquired MCI Communications Corp. on September 15, 1998 for $42,459.16 million.

AT&T Intellectual Property (formerly known as AT&T Knowledge Ventures) is the holding company used for AT&T, Inc.'s trademarks & intellectual property assets. Formerly known as SBC Knowledge Ventures, L.P., and, before 2004, SBC Properties, L.P., the trademark holding was formed in late 2001, when the SBC name was added to the beginning of the names of its telephone companies.

Part of Lumen Technologies, Inc. (Louisiana), CenturyLink Intellectual Property LLC is an American company that engages in filing patent rights.

BlackBerry provides wireless devices and solutions for the worldwide mobile communications market. It is widely known for the development of the Blackberry smartphone. It offers the BlackBerry wireless communications platform solution, which includes the commpression and security infrastructure services enabling BlackBerry hand-held wireless devices to send and receive wireless messages and data. It is engaged in the sale of BlackBerry hand-held devices and the provision of data communication. Its portfolio of products and solutions includes the BlackBerry wireless solution, the BlackBerry Wireless Hand-held product line, the BlackBerry PlayBook tablet, software development tools, and other software and hardware. It also provides QNX software for embedded systems market and BBM, which is known as an instant mobile to mobile private messaging service. BlackBerry also carries expertise in allowing third party commercial and enterprise software developers to build and deploy custom applications to run on BlackBerry smartphones. In addition, it provides its users with the BlackBerry Messenger Social Apps Platform, push, payments, advertising, location, maps, analytics, and Scoreloop services as well as repair and maintenance services. BlackBerry is engaged in the sales of its solutions through wireless communication carriers and third party distribution channels.

AT&T is a telecommunications company that provides wireless communications, local exchange, and long-distance services for consumers and businesses in the United States and internationally. The company offers its services in two segments: wireless and wireline. Its wireless segment offers various wireless voice, data, text, and other services. This segment sells various handsets, wirelessly-enabled computers, and wireless data cards for personal computers through its owned stores, agents, and third-party retail stores. It also sells accessories comprising carrying cases, hands-free devices, batteries, battery chargers, and other items to consumers as well as to agents and third-party distributors. As of December 31, 2013, this segment served approximately 110 million wireless subscribers. The company’s wireline segment provides data services such as switched and dedicated transport, DSL internet access, network integration, managed web hosting, packet, and enterprise networking services as well as local, interstate, and international wholesale networking capacity solutions to other service providers. This segment also offers voice services consisting of local and long-distance services; wholesale switched access services to other service providers; and outsourcing and integration services as well as CPE and government-related services. This segment has served approximately 12 million retail consumers, 10 million retail businesses, and 2 million wholesale access lines. AT&T is headquartered in Dallas, Texas

AT&T Services, Inc., a subsidiary of AT&T, Inc., is a company headquartered in San Ramon, CA, that provides internet services to residential and commercial customers.

SBC Outdoor Services offers outdoor maintenance facilities such as snow removal, mowing, landscape maintenance and spraying services.