EXHIBIT 12.10

CSG Systems International, Inc.

Ratio of Earnings to Fixed Charges

(in thousands, except ratios)

	Year Ended December 31, 2004 (1)
Income from continuing operations before income taxes	$	69,206
Fixed Charges:
Interest on long-term and short-term debt including amortization of debt expense		10,334
Interest element of rentals		7,936
Total fixed charges		18,270
Earnings before income taxes and fixed charges	$	87,476
Ratio of earnings to fixed charges		4.79

(1) Excludes the write-off of unamortized deferred financing costs of $6.6 million resulting from the repayment of our outstanding indebtedness under our then-existing credit facility in June 2004.