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William Burton

David Bateman (Stockbridge, MI) is a certified Cisco Systems Instructor with over 20 years of internetworking experience. While one of his primary roles is that of Cisco IP Telephony instructor, he is also involved in authoring books and courses in this field and is the Director of Curriculum Development for Skyline-ATS. William Burton (Baltimore, MD) is a Cisco instructor and consultant with seventeen years experience teaching Cisco course material. He is a developer for Cisco training material and has developed curriculum, training materials, and trained network engineers for Dow Chemical, Bank of America, and Weyerhaeuser.