Unwired Deploys Redback Networks SmartEdge Multi-Service Edge Routers to Power Wireless Broadband in Australia

Redback Networks Inc. (NASDAQ:RBAK), a leading provider
of next-generation broadband networking systems, today announced that
Unwired (ASX:UNW), Australia's largest wireless broadband provider,
has chosen Redback's SmartEdge(R) Multi-Service Edge Routers to power
its wireless broadband business and consumer services. Unwired plans
to expand the capacity of its wireless broadband network and improve
the network's reliability by leveraging the MPLS routing and
subscriber management capabilities of the SmartEdge routers.
   "With the SmartEdge routers, we are acquiring significant routing
capabilities while increasing service capabilities and subscriber
control," said Eric Hamilton, chief technical officer at Unwired. "The
combination of routing and subscriber management should enable us to
provide better network control as well as provide value added services
to reduce the time to market for future mobile broadband services."
   Unwired is one of the most innovative service providers in
Australia and holds spectrum licences to cover approximately 65% of
the Australian population across major population centres. The company
was awarded Carrier of the Year in 2005 by the Australian
Telecommunications User Group (ATUG), Australia's most prestigious
telecommunications award.
   "The SmartEdge family was purpose-built for next generation
service providers and has been deployed in some of the most demanding
broadband networks around the world," said Simon Williams, vice
president of sales and field operations for the Asia Pacific region at
Redback Networks. "We are extremely pleased to be working with an
innovative service provider, such as Unwired, to bring wireless
broadband services to Australian consumers and businesses."

   About Unwired

   Unwired is an Australian-owned ASX listed (ASX:UNW) wireless
broadband carrier. It currently services residential, small
office/home office and small to medium enterprise markets in greater
Sydney. It had 50,000 customers in Sydney alone at end of April 2006
and launched its Melbourne network in April 2006. For more information
visit: www.unwired.com.au.

   About Redback Networks

   Redback Networks Inc., a leading provider of next-generation IP
broadband networking equipment, enables carriers and service providers
to build Smart Broadband Networks that can deliver simplified,
personalized and portable subscriber services to consumers and
businesses. The company's carrier-class SmartEdge Router family
integrates edge routing, Ethernet aggregation, and subscriber
management. In conjunction with the NetOp(TM) Element and Policy
Manager platforms they provide a powerful, flexible infrastructure for
managing both residential and business users and deploying a variety
of 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, service providers and ISPs. For
more information, visit Redback Networks at www.redback.com.

   REDBACK and SmartEdge are trademarks registered at the U.S. Patent
and Trademark Office and in other countries. NetOp is a trademark 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 Networks' expectations,
beliefs, intentions or strategies regarding the future and including,
without limitation, statements regarding Unwired's potential to become
a national alternative local loop provider or Unwired's use of the
SmartEdge products and the anticipated benefits to Unwired, including
whether the network's reliability is improved, routing capabilities
are acquired, better network control is provided, or time to market
for future services is reduced. 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 Networks' 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.