 CSG International originally sold two versions of its billing process outsourcing services . Under new leadership in 1994 , it began developing additional software and providing consulting to in @-@ house billing departments . During this period it developed CSG Work @-@ Force Express , a suite of software products that manage the dispatch of technicians and other logistics at customer sites . Work @-@ Force Express consists of three applications : CSG Workforce Management , CSG TechNet and CSG TechNet CE , which integrate with CSG 's databases and billing systems . It also developed CSG Care Express , which is for creating online self @-@ service portals for consumers to view and pay their bills online . 
