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.

Broadcom Corp. designs, develops and supplies semiconductors for wired and wireless communications. The company was founded by Henry T. Nicholas III and Henry Samueli on August 16, 1991 and is headquartered in San Jose, CA.

Part of Broadcom Inc., Avago Technologies International Sales Pte Ltd. is a Singaporean company located in Singapore that supplies semiconductor devices.

HFI Innovation, Inc., a subsidiary of MediaTek, Inc., is a Taiwanese company located in Zhubei. The firm provides management consulting services. It was founded in 2016.

Tejas Networks India, Ltd. develops optical transmission products and solutions. It offers Ethernet over SDH/SONET products, carrier Ethernet over NG-SDH/SONET, carrier Ethernet switching equipment, generation optical transport equipment, C/DWDM access platforms, Ethernet cards, multi-service provisioning platforms, bandwidth provisioning equipment, and SDH/SONET multiplexer equipment. The company provides software solutions, including TejEMS, an element management system that provides integrated management of network elements in an intelligent optical network; and TejNES, an embedded network element software suite resident in each network element provides control and management of individual network elements. It also offers various services, including network planning, design, and optimization; network installation, commissioning, testing, and program management; customer support and post sales activities; and training, and system integration. The company's products are used in various applications, including access networks, regional backbone, wireless backhaul, Ethernet LAN over SDH WAN, customer premise equipment, multiple-ADMs, and wideband DXC. It serves carriers/ service providers, Internet service providers/cable MSOs, Utilities, PTTs, cellular operators, and original equipment manufacturers. The company was incorporated in 2000 and is headquartered in Bangalore, India.

QUALCOMM, Inc. engages in the development, design, and provision of digital telecommunications products and services. It operates through the following segments: Qualcomm CDMA Technologies (QCT), Qualcomm Technology Licensing (QTL), and Qualcomm Strategic Initiatives (QSI). The QCT segment develops and supplies integrated circuits and system software based on technologies for the use in voice and data communications, networking, application processing, multimedia, and global positioning system products. The QTL segment grants licenses and provides rights to use portions of the firm's intellectual property portfolio. The QSI segment focuses on opening new or expanding opportunities for its technologies and supporting the design and introduction of new products and services for voice and data communications. The company was founded by Franklin P. Antonio, Adelia A. Coffman, Andrew Cohen, Klein Gilhousen, Irwin Mark Jacobs, Andrew J. Viterbi, and Harvey P. White in July 1985 and is headquartered in San Diego, CA.

Rockstar Consortium US LP operates as an intellectual property (IP) licensing company. The company is headquartered in Plano, TX.

RPX Clearinghouse LLC, part of RPX Corp., is an American company located in San Francisco, CA. The firm provides investment services investment.

MediaTek, Inc. engages in the research, development, production, manufacturing, and marketing of multimedia integrated circuits, computer peripherals oriented integrated circuits, and consumer-oriented integrated circuits. The firm also provides design, test runs, maintenance, repair and technological consultation services for software and hardware; import and export trades of products; and sale and delegation of patents and circuit layout rights. The company was founded on May 28, 1997 and is headquartered in Hsinchu, Taiwan.

Alcatel-Lucent SAS engages in the provision of communications solutions to telecommunications companies, Internet service and data providers. It develops and integrates technologies, applications and services to offer global communications services. The company was founded in 1976 and is headquartered in Boulogne-Billancourt, France.

ZTE Corp. engages in the design, development, manufacture, and sale of information and telecommunication technology products. It operates through the following segments: Carriers’ Network, Consumer Business, and Government and Corporate Business. The Carriers’ Network segment focuses on meeting carries’ requirements in network evolution with the provision of wireless access, wireline access, bearer systems, core networks, telecommunication software systems and services, and other innovative technologies and product solutions. The Consumer Business segment is involved in the production and sale of products such as smart phones, mobile data terminals, family terminals, innovative fusion terminals, related software application, and value-added services. The Government and Corporate Business segment offers informatization solutions for the government and corporations through the application of products such as communications networks, IOT, Big Data, and cloud computing. The company was founded by Wei Gui Hou on February 7, 1985 and is headquartered in Shenzhen, China.

2Wire is a San Jose, Calif. provider of broadband service products for companies serving consumers.2Wire is dedicated to developing integrated solutions to deliver broadband service and content throughout the home or small office. Built upon the company's core expertise and continued innovation in software and hardware, 2Wire products enable home and small business users to fully leverage the benefits of broadband. In addition, 2Wire solutions offer service providers with a flexible platform to deliver and manage feature-rich Internet, telephony, entertainment, and other enhanced broadband application services

International Business Machines Corp. is an information technology company, which engages in the provision of integrated solutions that leverage information technology and knowledge of business processes. It operates through the following segments: Software, Consulting, Infrastructure, Financing, and Other. The Software segment combines hybrid cloud platform and software solutions to help clients become more data-driven, and to automate, secure, and modernize their environments. The Consulting segment focuses on integrating skills on strategy, experience, technology and operations by domain and industry. The Infrastructure segment offers solutions for hybrid cloud, and is the foundation of the hybrid cloud stack. Infrastructure is optimized for infusing AI into mission-critical transactions and tightly integrated with IBM Software including Red Hat for accelerated hybrid cloud benefits. The Financing segment refers to the client and commercial financing, facilitating IBM clients’ acquisition of IT systems, software, and services. The company was founded by Charles Ranlett Flint and Thomas J. Watson Sr. on June 16, 1911 and is headquartered in Armonk, NY.

Wuhan Fiberhome Network Co., Ltd. is a network equipment manufacturing company in China that mainly focosed on metropolitan areas of broadband Internet Protocol communications technology. It offers products & solutions with data communications, switches, routers & multi-service platforms among others. The company was founded in March 2001 and is headquartered in Wuhan, CN.

Huawei Technologies is a telecom solutions company that offers infrastructure application software and devices with wireline, wireless, and IP technologies. The company’s products and solutions have been deployed in over 100 countries and have served 45 of the world's top 50 telecom operators as well as one third of the world's population. Huawei Technologies has 3 divisions in the United States: enterprise (IP networking and routers, wireless, storage, data center security), carrier, and consumer devices (smartphones and tablets). Founded in January 1987, Huawei Technologies is headquartered in Shenzhen, Guangdong. Its testing lab is based in Plano, Texas with an additional office in Santa Clara, California.

China United Network Communications Group Co., Ltd. (Briefly named "China Unicom") was established on January 6, 2009 on the basis of the former China Unicom and China Netcom, which used to play the important roles on china's telecom market with their own advantages in different professional areas respectively. China United Network Communications Group Co.,Ltd ("China Unicom") was officially established on 6 January 2009 on the basis of the merger of former China Netcom and former China Unicom. It has subsidiaries in 31 provinces (autonomous regions and municipalities) across China and many countries and regions around the world.

NEC Corp. engages in the provision of systems, components, services, and integrated solutions for computing and communications applications. It operates through the following segments: Public Business, Enterprise Business, Telecom Carrier Business, System Platform Business, and Others. The Public Business segment provides system integration (system architecture and consulting), support (maintenance), outsourcing and cloud services, and system equipment for public, medical and financial institutions. The Enterprise Business segment offers information technology solutions for manufacturing, retail, and services. The Telecom Carrier Business segment supplies equipment to telecom carriers for network implementation, along with network control platform systems and operating services. The System Platform Business deals with products from business such as from terminals to network and computer equipment, software products, and service platforms. The Others segment includes smart energy solutions, mobile phones, and lighting equipment businesses. The company was founded by Kunihiko Iwadare on July 17, 1899 and is headquartered in Tokyo, Japan.

Hewlett Packard Enterprise Development LP operates as subsidiary company. The company is headquartered in La Jolla, CA.^\n^

Intel Corp. engages in the design, manufacture, and sale of computer products and technologies. It delivers computer, networking, data storage, and communications platforms. The firm operates through the following segments: Client Computing Group (CCG), Data Center and AI (DCAI), Network and Edge (NEX), Mobileye, Accelerated Computing Systems and Graphics (AXG), Intel Foundry Services (IFS), and All Other. The CCG segment consists of platforms designed for notebooks, 2-in-1 systems, desktops, tablets, phones, wireless and wired connectivity products, and mobile communication components. The DCAI segment delivers solutions to cloud service providers and enterprise customers, along with silicon devices for communications service providers and high-performance computing customers. The NEX segment offers computing system solutions from inflexible fixed-function hardware to general-purpose compute, acceleration, and networking devices running cloud native software on programmable hardware. The Mobileye segment develops driving assistance and self-driving solutions. The AXG segment provides products and technologies designed to help customers solve the toughest computational problems. Its products include CPUs for high-performance computing and GPUs targeted for a range of workloads and platforms, from gaming and content creation on client devices to delivering media and gaming in the cloud, and the most demanding high-performance computing and AI workloads on supercomputers. The IFS segment refers to full stack solutions created from the foundry industry ecosystem. The All Other segment represents results from other non-reportable segments and corporate-related charges. The company was founded by Robert Norton Noyce and Gordon Earle Moore on July 18, 1968, and is headquartered in Santa Clara, CA.