ADVA AG Optical Networking / Voting rights: Notification in accordance with section 26 paragraph 1 WpHG Publication pursuant to 26 sect.1 WpHG (the German Securities Trading Act) processed and transmitted by Hugin. The issuer is solely responsible for the content of this announcement. ---------------------------------------------------------------------- --------------

JPMorgan Asset Management (UK) Limited, London, United Kingdom notified us pursuant to sec. 21 para. 1 WpHG that on October 28, 2009 they had exceeded the 3% voting rights threshold in ADVA AG Optical Networking and that their share of voting rights was at 3.17% (1.462.721 voting rights) that day. These 3.17% (1.462.721 voting rights) are to be attributed to JPMorgan Asset Management pursuant to section 22 paragraph 1, sentence 1, number 6 WpHG.

ADVA AG Optical Networking Maerzenquelle 1-3, 98617 Meiningen-Dreissigacker, Germany t +49 3693 450 0, f +49 3963 450 499 investor-relations@advaoptical.com, www.advaoptical.com Let's ADVANCE

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ADVA AG Optical Networking Campus Martinsried, Fraunhoferstr. 9a Martinsried/Munich Germany

WKN: 510300; ISIN: DE0005103006 ; Index: CDAX, Prime All Share, TECH All Share; Listed: Prime Standard in Frankfurter Wertpapierborse, Regulierter Markt in Bayerische Borse Munchen, Regulierter Markt in Borse Berlin, Regulierter Markt in Borse Dusseldorf, Regulierter Markt in Borse Stuttgart, Regulierter Markt in Frankfurter Wertpapierborse, Regulierter Markt in Hanseatische Wertpapierborse zu Hamburg, Regulierter Markt in Niedersachsische Borse zu Hannover;

SOURCE: ADVA AG Optical Networking

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