COX COMMUNICATIONS SELECTS CIENA’S ONLINE MULTISERVICE SOLUTIONS FOR NATIONWIDE NETWORK

Agreement for ONLINE Metro and ONLINE Edge Platforms Helps Leading Cable Provider Offer Advanced Data Services

LINTHICUM, MD — 08/26/2003

Ciena® Corporation (NASDAQ: CIEN), a leading global provider of innovative network solutions, today announced that Cox Communications, Inc. (NYSE: COX), one of the nation’s largest cable providers, has selected Ciena’s ONLINE Metro™ and ONLINE Edge™ platforms to support data services on its multiservice broadband communications network.

Ciena’s ONLINE platforms are helping Cox to deliver video-on-demand, storage area networking and Gigabit Ethernet services to its customers. The Ciena solution gives Cox flexibility and reliability in metro area networks as it moves to collapse its voice and data platforms to a common infrastructure. Consolidating its existing infrastructure with Ciena's ONLINE multiservice solution will create greater capacity, flexibility and service support across the network.

“Ciena’s product family allows us to cost-effectively upgrade our network while leveraging our existing infrastructure,” said Darryl Ladd, Cox's director of network architecture. “The ONLINE platform’s technology, reliability and feature sets are instrumental in our ability to deliver advanced data services to our growing customer base.”

“This is an ideal application of the multiservice capabilities offered by our ONLINE solution,” said Francois Locoh-Donou, vice president of marketing at Ciena. “These metro and edge networking systems were designed to provide high-bandwidth capacity, carrier-class reliability, and a cost-effective platform for converging voice, video and data services onto a unified network. We’re pleased that Cox Communications sees the powerful value in this solution.”

Ciena’s ONLINE platforms successfully meet both service provider and enterprise requirements for scalable, high-capacity metropolitan networks. The solutions support cost-effective metropolitan access and edge multiservice delivery, and offer flexible options for dense service aggregation in fiber rich network environments.


About Ciena

Ciena Corporation delivers innovative network solutions to the world's largest service providers, increasing the cost-efficiency of current services while enabling the creation of new carrier-class data services built upon the existing network infrastructure. Additional information about Ciena can be found at www.ciena.com.
Note to Investors

This press release contains certain forward-looking statements based on current expectations, forecasts and assumptions of Ciena (the Company) that involve risks and uncertainties. Forward-looking statements in this release, including but not limited to Ciena’s intention of supplying the ONLINE Metro and Edge products to Cox Communications, and the expected benefits of such a deployment, are based on information available to the Company as of the date hereof. The Company’s actual results could differ materially from those stated or implied in such forward-looking statements, due to risks and uncertainties associated with the Company’s business, which include the risk factors disclosed in the Company’s Report on Form 10-Q filed with the Securities and Exchange Commission on August 21, 2003. Forward looking statements include statements regarding the Company’s expectations, beliefs, intentions or strategies regarding the future and can be identified by forward looking words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “should,” “will,” and “would” or similar words. The Company assumes no obligation to update the information included in this press release, whether as a result of new information, future events or otherwise.

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