Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Segment Information [Abstract]

Sales and gross profit of our reportable segments

	Three Months Ended
	June 30, 2011				June 30, 2010
(In thousands)	Sales		Gross Profit		Sales		Gross Profit
Carrier Networks	$	150,492	$	87,465	$	117,579	$	70,273
Enterprise Networks		33,735		19,362		32,782		19,056
Total	$	184,227	$	106,827	$	150,361	$	89,329

	Six Months Ended
	June 30, 2011				June 30, 2010
(In thousands)	Sales		Gross Profit		Sales		Gross Profit
Carrier Networks	$	282,852	$	166,963	$	217,103	$	129,539
Enterprise Networks		66,897		38,659		60,285		35,118
Total	$	349,749	$	205,622	$	277,388	$	164,657

Sales information by product category

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2011		2010		2011		2010
Carrier Systems	$	112,289	$	73,148	$	199,039	$	131,241
Business Networking		35,699		32,165		72,062		58,622
Loop Access		36,239		45,048		78,648		87,525
Total	$	184,227	$	150,361	$	349,749	$	277,388

Subcategory revenues

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2011		2010		2011		2010
Growth Products
Broadband Access (included in Carrier Systems)	$	77,062	$	44,971	$	128,844	$	81,333
Optical Access (included in Carrier Systems)		22,008		16,128		42,924		27,387
Internetworking (NetVanta & Multi-service Access Gateways) (included in Business Networking)		33,029		27,902		65,912		50,085
Total		132,099		89,001		237,680		158,805
Traditional Products
HDSL (does not include T1) (included in Loop Access)		34,049		42,174		74,994		82,104
Other products (excluding HDSL)		18,079		19,186		37,075		36,479
Total		52,128		61,360		112,069		118,583
Total	$	184,227	$	150,361	$	349,749	$	277,388

Sales information by geographic area

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2011		2010		2011		2010
United States	$	160,804	$	142,046	$	313,917	$	262,346
International		23,423		8,315		35,832		15,042
Total	$	184,227	$	150,361	$	349,749	$	277,388