ENGLEWOOD, Colo.--( BUSINESS WIRE )-- CSG Systems International, Inc. ( NASDAQ: CSGS ), a global provider of software and services-based business support solutions (BSS) announced that as a result of its second quarter dividend of $0.15 per share on its common stock, it will adjust the conversion rate for its outstanding 3.0% Senior Subordinated Convertible Notes issued in March 2010 (the "2010 Convertible Notes"). The adjustments are made in accordance with the terms of the Indenture Agreement.