(ADTN) - Get Report

said fourth-quarter earnings will fall short of estimates because of sluggish sales and precautions against bad debt.

The maker of digital transmission products expects to earn 9 cents or 10 cents a share in the quarter, short of analysts' estimates of 16 cents a share. The estimate includes a 6-cent charge to increase its bad-debt allowance because of problems at a distributor.

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The company said revenue will be about $89 million in the quarter, reflecting the "economic slowdown."