CSG Systems InternationalInc. has lowered its full-year 2016 GAAP EPS guidance.

The company now expects GAAP EPS to be between $1.74 and $1.84as of May 4. The previous guidance was a range of $1.84 to $1.94.

CSG Systems maintained other parts of its guidance for full year2016. It continues to expect non-GAAP EPS of $2.59 to $2.69, revenues of $735 millionto $760 million, and non-GAAP adjusted EBITDA of $177 million to $182 million.

CSG Systems reported first-quarter net income of $21.5 million,or 64 cents per share, compared with $9.4 million, or 28 cents per share, in thefirst quarter of 2015.