EXHIBIT 12.10

CSG Systems International, Inc.

Ratio of Earnings to Fixed Charges

(in thousands, except ratio)

	Quarter Ended March 31, 2008 (unaudited)
Income from continuing operations before income taxes	$	23,042
Interest on long-term and short-term debt including amortization of debt expense		1,808
Interest element of rentals		852
Total fixed charges		2,660
Earnings before income taxes and fixed charges	$	25,702
Ratio of earnings to fixed charges		9.66