Ciena Honored by SBC Communications as Outstanding Supplier

Linthicum, MD — 04/25/2005

Commitment to excellence has earned Ciena® Corporation (NASDAQ: CIEN), the network specialist, recognition as an outstanding supplier this past year to SBC Communications Inc. (NYSE: SBC), one of the world’s leading data, voice and Internet services providers.

"We are proud of our longstanding tradition of going beyond the call for our customers," said Maureen Merkle, President, SBC Procurement. "We succeed at that because strategic supply chain partners like Ciena consistently go beyond the call for us.”

Ciena was one of a select group of 47 suppliers recognized for their work in helping the SBC companies deliver outstanding service to its customers during the past year. Ciena was recognized for its contributions in both the Supplier Diversity Excellence and Teamwork categories.

“This award acknowledges Ciena’s commitment to understanding our customers’ business needs and priorities in addition to providing application-focused, business-driven solutions for their networks,” said Jim Collier, Ciena’s senior vice president, Worldwide Sales. “Ciena is proud to support SBC’s broadband efforts with our DN 7000™ family of multiservice switches and our CNX-5™ broadband DSL system. We are extremely pleased to be honored by one of the most respected service providers in the world.”

As part of its annual supplier recognition program, SBC took out a half-page ad in the April 22 edition of the Wall Street Journal to publicly thank the selected companies.


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.
Press Contacts:
Nicole Anderson
Ciena Corporation
(877) 857 -7377
pr@ciena.com
Investor Contacts:
Marie Downing
Ciena Corporation
(888) 243-6223
ir@ciena.com