 CSG International ( CSGI ) is a multinational corporation headquartered in Meridian , Colorado , though the postal designation of Englewood is used in the corporate mailing address . It provides Business Support Systems ( BSS ) software and services , primarily to the telecommunications industry . CSG was founded by Neal Hansen as a division of First Data in 1982 . It became an independent publicly traded company in 1999 .
 sierpniu 2007 roku , the company announced that it entered into a definitive agreement to be acquired by the British telecommunications company BT Group . The acquisition was completed in 2008 and the company was