Ciena and Nortel Announce Settlement of Pending Litigation

Linthicum, MD — 08/08/2006

Ciena® Corporation (NASDAQ: CIEN), the network specialist, and Nortel (NYSE/TSX: NT) announced today that the companies have reached an agreement to settle two patent lawsuits between the companies that have been pending in the U.S. District Court for the Eastern District of Texas.

Pursuant to the settlement, the parties entered into a long-term patent cross-license agreement. Both the original lawsuit brought by Ciena against Nortel in January 2005 and a second patent infringement case filed by Nortel against Ciena in April 2006 are to be dismissed.


About Ciena

Ciena specializes in network transition. We provide the flexible platforms, intelligent software and professional services to build converged networks for enhanced services and applications. With a growing global presence, Ciena leverages its heritage of practical innovation to deliver maximum performance and economic value in communications networks worldwide. For more information, visit www.ciena.com.
ABOUT NORTEL
Nortel is a recognized leader in delivering communications capabilities that enhance the human experience, ignite and power global commerce, and secure and protect the world’s most critical information. Our next-generation technologies,  for both service providers and enterprises,  span access and core networks, support multimedia and business-critical applications, and help eliminate today’s barriers to efficiency, speed and performance by simplifying networks and connecting people with information. Nortel does business in more than 150 countries. For more information, visit Nortel on the Web at www.nortel.com. For the latest Nortel news, visit www.nortel.com/news.
Press Contacts:
Nicole Anderson
Ciena Corporation
(877) 857 -7377
pr@ciena.com Jay Barta
Nortel
(972) 685-2381
jbarta@nortel.com
Investor Contacts:
Marie Downing
Ciena Corporation
(888) 243-6223
ir@ciena.com