ADTRAN (Nasdaq: ADTN) reported earnings on July 10. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended June 30 (Q2), ADTRAN beat expectations on revenues and beat expectations on earnings per share.

Compared to the prior-year quarter, revenue dropped. Non-GAAP earnings per share dropped significantly. GAAP earnings per share dropped significantly.

Margins dropped across the board.

Revenue details
ADTRAN chalked up revenue of $162.2 million. The 12 analysts polled by S&P Capital IQ expected to see revenue of $154.1 million on the same basis. GAAP reported sales were 12% lower than the prior-year quarter's $184.0 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
EPS came in at $0.21. The nine earnings estimates compiled by S&P Capital IQ anticipated $0.19 per share. Non-GAAP EPS of $0.21 for Q2 were 45% lower than the prior-year quarter's $0.38 per share. GAAP EPS of $0.17 for Q2 were 48% lower than the prior-year quarter's $0.33 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
For the quarter, gross margin was 49.2%, 250 basis points worse than the prior-year quarter. Operating margin was 8.7%, 590 basis points worse than the prior-year quarter. Net margin was 6.1%, 540 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
Next quarter's average estimate for revenue is $163.0 million. On the bottom line, the average EPS estimate is $0.22.

Next year's average estimate for revenue is $621.4 million. The average EPS estimate is $0.78.

Investor sentiment
The stock has a two-star rating (out of five) at Motley Fool CAPS, with 157 members out of 185 rating the stock outperform, and 28 members rating it underperform. Among 52 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 42 give ADTRAN a green thumbs-up, and 10 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on ADTRAN is underperform, with an average price target of $19.78.

Internet software and services are being consumed in radically different ways, on increasingly mobile devices. Does ADTRAN fit in anymore? Check out the company that Motley Fool analysts expect to lead the pack in "The Next Trillion-dollar Revolution." Click here for instant access to this free report.