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 USA is a national provider of wireless voice, messaging, and data services capable of reaching over 293 million Americans where they live, work, and play. T-Mobile USA is the US operating entity of T-Mobile International AG, the mobile communications subsidiary of Deutsche Telekom AG (NYSE: DT). Deutsche Telekom is one of the largest telecommunications companies in the world, with nearly 120 million customers worldwide.

> 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. In support of our philosophy to give where we live, TELUS, our team members and retirees have contributed $135 million to charitable and not-for-profit organizations and volunteered more than 2.6 million hours of service to local communities since 2000. Nine TELUS Community Boards across Canada lead our local philanthropic initiatives.

> www.telus.com