Centennial Communications, based in Wall, NJ, is a leading provider of regional wireless and integrated communications services in the United States and Puerto Rico with over 1.1 million wireless subscribers and 439,300 access lines and equivalents. The U.S. business owns and operates wireless networks in the Midwest and Southeast covering parts of six states. Centennial's Puerto Rico business owns and operates wireless networks in Puerto Rico and the U.S. Virgin Islands and provides facilities-based integrated voice, data and Internet solutions. Welsh, Carson, Anderson & Stowe is a significant shareholder of Centennial.

> www.centennialwireless.com

Sprint Nextel offers a comprehensive range of wireless and wireline communications services bringing the freedom of mobility to consumers, businesses and government users. Sprint Nextel is widely recognized for developing, engineering and deploying innovative technologies, including two wireless networks serving nearly 51 million customers at the end of the third quarter 2008; industry-leading mobile data services; instant national and international walkie-talkie capabilities; and a global Tier 1 Internet backbone.

> www.sprint.com

T-Mobile’s innovative wireless products and services help empower people to connect to those who matter most. Multiple independent research studies continue to rank T-Mobile among the highest in numerous regions throughout the U.S. in wireless customer care and call quality.

> www.t-mobile.com

TELUS (TSX: T, T.A; NYSE: TU) is a leading national telecommunications company in Canada, with $9.7 billion of annual revenue and 11.6 million customer connections including 6.1 million wireless subscribers, 4.2 million wireline network access lines and 1.2 million Internet subscribers. TELUS provides a wide range of communications products and services including data, Internet protocol (IP), voice, entertainment and video.

> www.telus.com