David W. Shackelford

David W.
Shackelford, aged 51 years, has the Vice President of Worldwide Sales since October 2003 and is responsible for all domestic and international sales to partners, carriers and service providers.
Prior to joining the Company, he was self employed as a private rancher from April 2001 until October 2003.
Prior to that, he held the position of Vice President of Worldwide Sales for Woodwind Communications, Inc. from January 2000 to April 2001.
Prior to that, he was Vice President Sales at Newbridge Networks Inc. from August 1996 till December 1999.
From May 1972 through August 1996, He worked in various sales and business development positions at other organizations including Micom (a division of Nortel Networks), Gandalf Systems Corporation, Infotron Systems and Texaco Inc. He studied Business and Computer Science at Louisiana State University and is a member of the American Management Association.