Tellabs, Inc. designs, develops, and supports 
telecommunications networking products for communications 
service providers worldwide. Its products and services 
enable customers to deliver wireline and wireless 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 
transport products, which deliver wireless and business 
services primarily outside of the United States; and data 
products, including packet-switched products that enable 
wireline and wireless carriers to deliver business services 
and next-generation mobile voice and Internet services. The 
Transport segment enables service providers to transport 
services and manage bandwidth; and wireline and wireless 
providers to support wireless and business services for 
enterprises, as well as provides triple-play voice, video, 
and data services. The Services segment includes deployment, 
support, training, systems integration, and network 
design/consulting services. These services support various 
phases of the network, such as planning, building, and 
operating. The company sells its products and services 
through its direct sales organization, value-added 
resellers, distributors, and public and private network 
providers. Its customers include 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 was founded in 1974 and is 
headquartered in Naperville, Illinois.