Sonus Networks, Inc. SONS is a leading provider of voice infrastructure products that could be an interesting play for investors. That is because, not only does the stock have decent short-term momentum, but it is seeing solid activity on the earnings estimate revision front as well.These positive earnings estimate revisions suggest that analysts are becoming more optimistic on SONS’ earnings for the coming quarter and year. In fact, consensus estimates have moved sharply higher for both of these time frames over the past four weeks, suggesting that Sonus Networks could be a solid choice for investors.Current Quarter Estimates for SONSIn the past 30 days, 2 estimates have gone higher for Sonus Networks while none has gone lower in the same time period. The trend has been pretty favorable too, with estimates narrowing from a loss of 9 cents a share 30 days ago, to a loss of 6 cents today, a move of 33.3%.Current Year Estimates for SONSMeanwhile, Sonus Networks’ current year figures are also looking quite promising, with 2 estimates moving higher in the past month, compared to none lower. The consensus estimate trend has also seen a boost for this time frame, narrowing from a loss of 15 cents per share 30 days ago to a loss of 5 cents today, an increase of 66.7%. Bottom LineThe stock has also started to move higher lately, adding 15.8% over the past four weeks, suggesting that investors are starting to take note of this impressive story. So investors may definitely want to consider this Zacks Rank #1 (Strong Buy) stock to profit in the near future.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report SONUS NETWORKS (SONS): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research