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, a provider of customer care and billing systems for communications and IP service providers, reported first-quarter earnings that beat analysts' estimates by a penny.

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The company said excluding acquisition charges, income rose to $61.1 million, or 27 cents a share, from $37.9 million, or 18 cents a share, in the year-ago period. According to

First Call/Thomson Financial

, analysts expected the company to earn 26 cents for the quarter.

Revenue in the first quarter rose 45.3% to $342.2 million from $235.5 million.