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Since 1987 Mr. Billings has been the President of Billings & Co. a management consulting firm focused on the wireless communications and related industries. Mr. Billings also served as Chief Operating Officer from March 1998 to June 1998 and as Chief Executive Officer from June 1998 to May 1999 of Silicon Wireless Ltd. a developer of wireless communication technology. In addition from May 1992 to May 1997 Mr. Billings served first as the Chief Operating Officer and later as Vice Chairman of Radio Movil Digital Americas Inc. a wireless dispatch communications company with investments in South America. Previously Mr. Billings served as General Manager of the Washington-Baltimore Cellular Telephone Partnership (d/b/a Cellular One) and as Vice President of Corporate Development of the Communications Satellite Corporation. | 