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ADVA OPTICAL NETWORKING REPORTS Q3 2008 FINANCIAL RESULTS IN LINE WITH EXPECTATIONS

Q3 2008 revenues at EUR 54.1 million

Q3 2008 IFRS pro forma operating income of EUR 1.3 million (2.4% of revenues)

Q4 2008 revenues expected to range between EUR 50 million and EUR 55 million with IFRS pro forma operating income between -3% and +2% of revenues

Norcross, Georgia, USA and Martinsried/Munich, Germany. November 6,2008. ADVA Optical Networking today announced Q3 2008 financialresults for the quarter ended September 30, 2008, and prepared inaccordance with International Financial Reporting Standards (IFRS).

Q3 2008 IFRS FINANCIAL RESULTSRevenues in Q3 2008 totaled EUR 54.1 million after EUR 61.5 millionin Q3 2007 and EUR 52.7 million in Q2 2008, and in line with guidanceof between EUR 50 million and EUR 58 million. IFRS pro formaoperating income, excluding stock-based compensation and amortization& impairment of goodwill & acquisition-related intangible assets,came in at EUR 1.3 million in Q3 2008 or 2.4% of revenues, also inline with guidance of between -4% and +4%. This compares to Q3 2007IFRS pro forma operating income of EUR 4.0 million or 6.5% ofrevenues, and to Q2 2008 IFRS pro forma operating income of EUR -0.1million or -0.1% of revenues. The year-over-year pro forma operatingincome reduction to the largest extent was driven by weaker revenues.

The IFRS operating loss in Q3 2008 was EUR 0.1 million, after anoperating income of EUR 1.3 million in Q3 2007. The key driver forthis development is the above-mentioned decline of pro formaoperating income. In part, the decline is offset by lower scheduledamortization of intangible assets from acquisitions, which amountedto EUR 0.6 million in Q3 2008 after EUR 2.0 million in Q3 2007.

IFRS net income in Q3 2008 amounted to EUR 0.4 million, after a netloss of EUR 1.2 million in Q3 2007. The Q3 2008 net income waslargely driven by the factors impacting the operating resultdescribed above, by net foreign currency exchange gains of EUR 0.5million and by an income tax benefit of EUR 0.3 million. The netforeign currency exchange gains were largely due to the devaluationof the EUR against the USD, and the income tax benefit related todeferred tax adjustments on tax losses carried forward and temporarydifferences between tax and IFRS accounting. In Q3 2007, in contrast,there were net foreign currency exchange gains of EUR 1.3 million andan income tax expense of EUR 1.0 million. Basic and diluted IFRS netearnings per share were EUR 0.01 each in Q3 2008 after EUR -0.03 eachin Q3 2007.

CONFERENCE CALL AND WEBCASTIn conjunction with the release of its Q3 2008 IFRS financial resultstoday, November 6, 2008, ADVA Optical Networking will host aconference call for analysts and investors at3:00 p.m. CET/9:00 a.m. EST. Participating in the call will be ADVAOptical Networking's chief executive officer, Brian Protiva, andchief financial officer, Jaswir Singh. Interested parties may dial inat +49 69 4035 9616 (no dial-in code) or +1 800 814 6417 (participantcode: 572371#), and listen live via webcast on ADVA OpticalNetworking's website, located on the 'financial results' page in theinvestor relations section of ADVA Optical Networking's website atwww.advaoptical.com.

Q4 2008 OUTLOOKBased on the volatile macro environment, ADVA Optical Networkingexpects Q4 2008 revenues to range between EUR 50 million and EUR 55million. Further, we anticipate pro forma operating income of between-3% and +2% of revenues in Q4 2008. Further, ADVA Optical Networkingnotes that like in prior years, as part of the IFRS year-end 2008closing process, it will perform a detailed review of the expectedbusiness development in respect of all intangible assets, includingcapitalized research and development expenses. This review may resultin non-cash impairment charges in Q4 2008. The pro forma operatingincome guidance provided above excludes any such potential impairmentcharges. ADVA Optical Networking will publish its Q4 andfull-year 2008 financial results on March 10, 2009.

NINE-MONTH IFRS CONSOLIDATED INCOME STATEMENT

(in thousands of EUR, Q3 Q3 9M 9Mexcept earnings per share) 2008 2007 2008 2007

Revenues 54,116 61,460 160,823 197,674Pro forma cost of goods sold -30,501 -34,468 -93,056 -115,026Pro forma gross profit 23,615 26,992 67,767 82,648Pro forma selling and marketingexpenses -8,492 -7,510 -24,930 -24,087Pro formageneral and administrative expenses -6,650 -6,531 -19,552 -18,966Pro formaresearch and development expenses -9,737 -10,743 -30,672 -30,607Income from capitalization ofdevelopment expenses, net ofamortization for capitalizeddevelopment projects 2,063 1,735 7,503 4,404Restructuring expenses 0 0 -2,251 0Other operating income (expenses),net 511 69 1,348 515Pro forma operating income 1,310 4,012 -787 13,907Amortization ofintangible assets from acquisitions -632 -1,992 -3,827 -6,870Stock compensation expenses -761 -735 -1,882 -2,528Operating income (loss) -83 1,285 -6,496 4,509Interest income (expense), net -330 -210 -743 -661Other income (expense), net 526 -1,294 -932 -1,877Income (loss) before tax 113 -219 -8,171 1,971Income tax benefit (expense), net 256 -968 1,473 -3,719Net income (loss) 369 -1,187 -6,698 -1,748

Earnings per share in EUR basic 0.01 -0.03 -0.15 -0.04 diluted 0.01 -0.03 -0.15 -0.04

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PUBLISHED BY:ADVA AG Optical Networking, Martinsried/Munich and Meiningen, GermanyADVA Optical Networking North America, Inc., Norcross, Georgia, USAADVA Optical Networking (Shenzhen) Ltd., Shenzhen, Chinawww.advaoptical.com

FOR PRESS:Christine Keckt +1 201 258 8293 (U.S.)t +44 1904 699 358 (Europe)t +86 755 8621 7400 (Asia)public-relations@advaoptical.com

FOR INVESTORS:Wolfgang Guessgent +1 201 258 8302 (U.S.)t +49 89 89 0665 940 (Europe)t +86 755 8621 7400 (Asia)investor-relations@advaoptical.com

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ADVA AG Optical NetworkingCampus Martinsried, Fraunhoferstr. 9aMartinsried/Munich Germany

WKN: 510300; ISIN: DE0005103006 ; Index: CDAX, Prime All Share, TECHAll Share, TecDAX;Listed: Geregelter Markt in Frankfurter Wertpapierbörse, AmtlicherMarkt in Börse Stuttgart,Prime Standard in Frankfurter Wertpapierbörse, Amtlicher Markt inBayerische Börse München,Amtlicher Markt in Börse Berlin, Amtlicher Markt in HanseatischeWertpapierbörse zu Hamburg,Amtlicher Markt in Niedersächsische Börse zu Hannover, AmtlicherMarkt in Börse Düsseldorf;

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