Tellabs’ fourth quarter 2011 revenue totaled $317 million, compared with $410 million in the year-ago quarter.

On a GAAP basis, Tellabs recorded a net loss of $5 million or 1 cent per share in the fourth quarter of 2011, compared with a net loss of $11 million or 3 cents per share in the fourth quarter of 2010.

On a non-GAAP basis, Tellabs recorded net earnings of $4 million or 1 cent per share in the fourth quarter of 2011, compared with net earnings of $6 million or 2 cents per share in the year-ago quarter. Non-GAAP results for the fourth quarter of 2011 exclude pretax charges of $7.9 million, including $4.9 million in amortization of purchased intangibles, $2.8 million in equity-based compensation expense, a credit of $0.2 million in restructuring and other charges, and $0.4 million for a writedown of a long-term investment.

Tellabs Inc.