Tellabs, Inc. designs, develops, and supports telecommunications networking products for communication service providers in the United States and internationally. Its products and services enable customers to deliver wireless and wireline voice, data, and video services to business and residential customers. The company operates through three segments: Broadband, Transport, and Services. The Broadband segment provides access products that enable service providers to deliver bundled voice, video, and high-speed Internet/data services over copper or fiber networks; managed access products, which deliver wireless and business services primarily outside of North America; and data products, including packet-switched products that enable wireless and wireline carriers to deliver mobile voice and Internet services, and wireline business services to their customers. The Transport segment enables service providers to manage network bandwidth by adding capacity needed; and wireline and wireless providers to support metro networks, mobile services, and business services for enterprises, as well as triple-play voice, video, and data services for residential consumers. The Services segment delivers deployment, training, support, and professional services, which support various phases of the network, such as planning, building, and operating. Tellabs, Inc. serves primarily communication services providers, including local exchange carriers; wireline and wireless service providers; multiple system operators; competitive service providers; distributors; original equipment manufacturers; system integrators; and government agencies. The company sells its products and services through its direct sales and sales support personnel, value-added resellers, independent sales representatives, distributors, and public and private network providers. Tellabs, Inc. was founded in 1974 and is headquartered in Naperville, Illinois.