EXHIBIT 99.2

Product and Segment Revenues

(Unaudited)

(In thousands)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2015			2014			2015			2014
Product Revenues:
Carrier Systems	$	111,044		$	113,950		$	330,522		$	342,327
Business Networking		39,127			39,746			108,718			119,634
Loop Access		7,907			9,196			21,811			24,064
Total	$	158,078		$	162,892		$	461,051		$	486,025
Subcategories included in the above:
Broadband Access (included in Carrier Systems)	$	94,116		$	96,084		$	279,656		$	285,920
Optical (included in Carrier Systems)		13,733			13,686			42,669			42,308
Internetworking (Netvanta & Multi-service Access Gateways) (included in Business Networking)		38,123			38,630			105,440			116,562
Total Core Products		145,972			148,400			427,765			444,790
Percentage of Total Revenue		92	%		91	%		93	%		92	%
HDSL (does not include T1) (included in Loop Access)		7,397			8,400			20,499			22,075
Other Products (excluding HDSL)		4,709			6,092			12,787			19,160
Total Legacy Products		12,106			14,492			33,286			41,235
Percentage of Total Revenue		8	%		9	%		7	%		8	%
Total	$	158,078		$	162,892		$	461,051		$	486,025
Segment Revenues:
Carrier Networks	$	131,273		$	132,972		$	382,684		$	394,589
Enterprise Networks		26,805			29,920			78,367			91,436
Total	$	158,078		$	162,892		$	461,051		$	486,025
Sales by Geographic Region:
United States	$	119,476		$	98,623		$	307,344		$	288,344
International		38,602			64,269			153,707			197,681
Total	$	158,078		$	162,892		$	461,051		$	486,025