ADVA PROVIDES NEW GUIDANCE FOR 2001 ots Ad hoc-Service: ADVA AG <DE0005103006>

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Martinsried / Munich / Germany / Ramsey / New Jersey / USA (ots Ad hoc-Service) -

ADVA Optical Networking (German Neuer Markt: ADV), a leading global provider of optical networking solutions, today announced new financial guidance for the year 2001. The Company expects to generate sales of between EUR 110 to 120 million, as well as pro forma EBIT levels of breakeven. In addition, the Company will reschedule announcement of its 2000 earnings results for April 28, 2001.

Rescheduled announcement of 2000 earnings results ADVA also rescheduled announcement of its 2000 earnings results, due to a delay in completing the final audited statements. In particular, the Company's four acquisitions and current six foreign subsidiaries extended the time frame required to reach completion. These results will be published on April 28, 2001.

Due to the postponement of reporting audited 2000 financial results, ADVA has cancelled its annual press conference, originally to be held today at 10:00 a.m. CET at CeBIT in Hannover, Germany, and the 2000 earnings conference call, originally to be held at 3:00 p.m. CET. The press conference and 2000 earnings conference call have been rescheduled for April 28, 2001. For more information, press are invited to view the analyst & investor conference via Webcast.

Analyst & investor conference ADVA will host its analyst & investor conference today at 11:00 a.m. CET, which can be accessed live via Webcast at, in the Investor Relations section under Media Archives. The presentation for the conference will also be available on ADVA's website in the same location. The conference will be followed by a live product demonstration at 2:00 p.m. CET at the ADVA booth at CeBIT, located in Hall 17 (booth F058).

Annual Shareholder Meeting ADVA has rescheduled its annual shareholders' meeting for June 13, 2001, which will be held at the Sächsischer Hof in Meiningen, Germany.

Published by: ADVA AG Optical Networking, Martinsried/Munich and Meiningen, Germany ADVA Optical Networking Inc., Ramsey/New Jersey, USA

For Investors and Financial Press: For Trade Press: Alexa M. Schmidt Elizabeth Sayer t +49(0)89 06 65 240 (Europe) t +44 1904 699 328 (Europe) t +1 201 995 0080 (U.S.) t +1 201 995 0080 (U.S.)