EXHIBIT 12.10

CSG Systems International, Inc.

Ratio of Earnings to Fixed Charges

(in thousands, except ratio)

	Six Months Ended June 30, 2006 (unaudited)
Income from continuing operations before income taxes	$	50,100
Fixed Charges:
Interest on long-term and short-term debt including amortization of debt expense		3,788
Interest element of rentals		1,734
Total fixed charges		5,522
Earnings before income taxes and fixed charges	$	55,622
Ratio of earnings to fixed charges		10.07