[["year ended december 31 ( in millions )", "2008", "2007", "2006"], ["customer premises equipment ( a )", "$ 3147", "$ 3164", "$ 2321"], ["scalable infrastructure ( b )", "1024", "1014", "906"], ["line extensions ( c )", "212", "352", "275"], ["support capital ( d )", "522", "792", "435"], ["upgrades ( capacity expansion ) ( e )", "407", "520", "307"], ["business services ( f )", "233", "151", "2014"], ["total", "$ 5545", "$ 5993", "$ 4244"]]