Press Release

Pioneer Telephone Cooperative Offers Advanced Broadband Services with Redback Networks SmartEdge Service Gateway 

Operationally Efficient Platform Extends Broadband Reach into the Rural Market

SAN JOSE, Calif., August 30, 2005 – Redback Networks Inc. (NASDAQ: RBAK), a leading provider of next-generation broadband networking systems, today announced that Pioneer Telephone Cooperative, one of the largest telephone cooperatives in the United States, has deployed the SmartEdge® Service Gateway to deliver advanced broadband services, including fixed wireless access for roaming broadband services.

“Our customers are becoming more sophisticated subscribers as new applications gain popularity,” said Steven Copeland, supervisor of network engineering for Internet services at Pioneer Telephone Cooperative. “The tiered broadband services enabled by the SmartEdge platform allow us to offer personalized services and higher value services. Operationally, the upgrade from the SMS™ was seamless with no service interruptions to our customers.”

“Redback’s products are purpose built to provide personalized broadband services and increase capital and operational efficiency,” said John Spiliotis, vice president of sales and operations for the Americas at Redback Networks. “While enabling advanced broadband services, the SmartEdge platform also provides for savings in rack space, power consumption, and operations through network consolidation, resulting in more efficient operations for service providers.”

Pioneer upgraded their current network which was utilizing the Redback Networks SMS broadband remote access server to enable advanced broadband services. The deployment also increased network scalability and capacity for future subscriber growth.

The SmartEdge Service Gateway platform simplified Pioneer’s network provisioning and planning with its circuit creation on demand capability. With this technology Pioneer no longer needs to pre-provision end-to-end virtual circuits. The SmartEdge Service Gateway platform can automatically detect virtual circuits as they become active and provision the appropriate policies on that virtual circuit dynamically using RADIUS.

About Pioneer Telephone

Pioneer Telephone is a multi-service communications company with more than 140,000 total customers/members in 30 Oklahoma counties. Serving customers since 1953, Pioneer is the third largest telephone cooperative in the United States. Pioneer provides an array of communications products and services, including Local Telephone Service, Digital TV, Cellular, DSL, Long Distance, Internet, Paging, Security Systems, Key System Sales/Maintenance and Directory Advertisement. More information is available at www.ptci.com.

About Redback Networks

Redback Networks Inc., a leading provider of next-generation broadband networking equipment, enables carriers and service providers to build third-generation Smart Broadband Networks that can deliver simplified, personalized, portable subscriber services to consumers and businesses. The company's carrier-class, consumer-scale SmartEdge Router and Service Gateway platforms for Consumer IP combine subscriber management systems and edge routing and, in conjunction with the NetOp™ Element and Policy Manager platform, provide a powerful, flexible infrastructure for managing both subscribers and value-added services.

Founded in 1996 and headquartered in San Jose, Calif., with sales and technical support centers located worldwide, Redback Networks maintains a growing and global customer base of more than 500 carriers and service providers, including major local exchange carriers (LECs), inter-exchange carriers (IXCs), PTTs and service providers. For more information, visit Redback Networks at www.redback.com.

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REDBACK and SmartEdge are trademarks registered at the U.S. Patent and Trademark Office and in other countries. SMS and NetOp are trademarks of Redback Networks Inc. All other products or services mentioned are the trademark, service marks, registered trademarks or registered service marks of their respective owners. Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995 The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 21E of the Securities and Exchange Act of 1934, as amended, including statements regarding Redback Network’s expectations, beliefs, intentions or strategies regarding the future and including, without limitation, statements regarding Pioneer’s ability to increase revenue and whether its transition from SMS systems to SmartEdge systems will be seamless and whether Redback’s products increase capital and operational efficiency and whether this deployment will increase network scalability and capacity for future subscriber growth at Pioneer. All forward-looking statements included in this document are based upon information available to Redback Networks as of the date hereof, and Redback Networks assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. These risks and other risks relating to Redback Network’s business are set forth in the documents filed by Redback Networks with the Securities and Exchange Commission (SEC), specifically the most recent report on Form 10-K, Form 10-Q, Form 8-K, Redback’s Registration Statement on Form S-3 (File No. 333-114352), and amendments thereto, and the other reports filed from time to time with the SEC.