ADTRAN (Nasdaq: ADTN) is expected to report Q3 earnings on Oct. 10. Here's what Wall Street wants to see:

The 10-second takeaway
 Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict ADTRAN's revenues will shrink -15.7% and EPS will compress -67.9%.

The average estimate for revenue is $162.1 million. On the bottom line, the average EPS estimate is $0.18.

Revenue details
 Last quarter, ADTRAN recorded revenue of $184.0 million. GAAP reported sales were 0.1% lower than the prior-year quarter's $184.2 million.

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

EPS details
 Last quarter, non-GAAP EPS came in at $0.38. GAAP EPS of $0.33 for Q2 were 41% lower than the prior-year quarter's $0.56 per share.

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

Recent performance
 For the preceding quarter, gross margin was 51.7%, 630 basis points worse than the prior-year quarter. Operating margin was 14.6%, 1,330 basis points worse than the prior-year quarter. Net margin was 11.5%, 860 basis points worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $643.1 million. The average EPS estimate is $0.93.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 162 members out of 189 rating the stock outperform, and 27 members rating it underperform. Among 48 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 40 give ADTRAN a green thumbs-up, and eight 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 $33.87.

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