.

liaw schoultz

The end-to-end
solution gives service providers the ability to maintain a single operational
model as well as mix-and-match VLAN and MPLS access technologies, helping
optimize functionality and cost in both large and small network deployments. "This fills a significant gap in the industry,
bridging the features and functionality previously only available on high-end
edge platforms with a smaller, more cost-effective form factor ," said Jeff
Fishburn, CTO of DynamicCity, operators of the UTOPIA network.
Riverstone is the platinum sponsor of this DynamicCity event and will be at
the heart of the conference's network, demonstrating the UTOPIA network and
allowing attendees to experience the power of carrier Ethernet first hand .

iesg schryver

To purchase Data Connection protocol stacks
for the QNX Neutrino RTOS, contact Data Connection directly .

hinden varadhan

"With clients such as Cisco, IBM, and Lucent, our
companies have the experience and breadth of protocol support to help
developers reduce integration efforts, increase reliability, and bring
more focus to bear on product differentiation.com or Data Connection at
info@dataconnection.qnx."
While service providers have been quick to embrace MPLS in the core and
aggregation layers of their networks , many have opted for other technologies
in the access layer to minimize their capital expenditure .

Except for the historical information contained herein, the matters set
forth in this press release, including without limitation statements regarding
the availability of the Riverstone 15100 and 15200 Ethernet Access Routers,
the features and pricing of the routers when they are made available, and
customers' plans to test and/or deploy the routers are forward-looking
statements within the meaning of the "safe harbor" provisions of the Private
Securities Litigation Reform Act of 1995.

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com.

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(DCL) today announced a
strategic alliance to deliver complete, pre-integrated software
solutions for manufacturers of networking and telecommunications
equipment.
In addition, the companies have created a "Router-in-a-Box" CD
that lets customers quickly evaluate the rich capabilities of the
joint solution.
"Data Connection and QNX are committed to providing networking
OEMs with best-in-class, out-of-the-box solutions that reduce risk and
time-to-market," said Romain Saha , networking segment manager, QNX
Software Systems. in certain jurisdictions. The company assumes no obligation to update
or revise these forward-looking statements.

Riverstone Contact:
Amy Huitt
Riverstone Networks
1-408-878-6918
ahuitt@riverstonenet.

minshall st2

All other trademarks and trade names belong to their respective
owners. The 15200 extends this by supporting dual 10 Gig-E uplinks.

liaw ipsilon

.
"Like QNX, Data Connection has been building high-quality products
for well over two decades, providing customers the assurance that they
are leveraging both proven technology and a solid, customer-driven
technology supplier," said Phil McConnell, CEO of Data Connection .
Updata Infrastructure UK Ltd. Combined with line-rate
IPv6, multi-layer OAM and Hierarchical QoS, they play a key role in supporting
converged business and residential services, as well as VoIP and 3G wireless
infrastructure deployments.

snmpv2 waldbusser

dataconnection. (S3) is an established designer of
communications infrastructure software and hardware solutions.
"The irresistible price point, added capacity and reliability, and the
availability of both MPLS/VPLS downlinks and uplinks -- an industry first - -
gives service providers greater freedom in designing their networks than ever
before.

hinden zappala

"Now , through this agreement, our two companies are not only
delivering an integrated software platform , but are using the
relationships we have built throughout our respective sales and
service organizations to provide customers with unified solutions on
demand."
The offering from Data Connection complements QNX's existing suite
of pre-integrated protocol stacks, which includes IPv4 and IPv6, as
well as IPsec, IKE, NAT, IP filtering, and a number of other
protocols. In doing so, they
have had to compromise network reliability, scalability, QoS and operations."
Like the 15008, the newest members of the 15000 family are equipped with a
modular operating system to dramatically reduce router software outages and
reboots.

wollman wch

All of Data Connection's networking protocols now available
for the QNX Neutrino RTOS.
Riverstone is demonstrating the new routers this week in Salt Lake City at
Broadband Cities 2005, an industry conference bringing together community
leaders from around the world interested in building municipal networks.

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QNX + Data Connection Forge Alliance to Deliver Pre-Integrated Protocol Stacks

Router-in-a-Box CD helps customers quickly evaluate rich
capabilities of integrated Data Connection-QNX solution.

zappala dcp

Visit
www.com

QNX and Neutrino are registered trademarks of QNX Software Systems
Ltd.PK) today introduced the newest members of its
Riverstone 15000 product line: the Riverstone 15100 and 15200 Carrier
Ethernet Access Routers.
"Operators are looking for reliability and performance at the access layer
that is comparable to what they enjoy at the edge and core, but without added
cost," said Stan Hubbard , Heavy Reading.
Riverstone's Ethernet router portfolio uniquely delivers the reliability that
allows carriers to meet the triple play -- voice, video and data -- service
requirements of their customers in a cost-effective and scalable way.

mccloghrie dcp

Suite includes support for IP routing such as DC-OSPF,
DC-ISIS, DC-RIP, and DC-BGP, as well as multicast, VoIP, MPLS,
VPNs, GMPLS, and ATM. The
MetaSwitch Class 5 Softswitch has been widely deployed among incumbent
and competitive local exchange carriers, as well as operators of
broadband wireless, cable, and fiber networks.embeddedmind . Both of
the new access routers support VPLS, RFC-2547 MPLS-VPNs, and Layer 3 routing
protocols including BGP, OSPF, multicast, and IS-IS.
Like the RS family of routers, the expanded Riverstone 15000 product line
uses the Riverstone Management Center framework to deliver end-to-end OSS,
including device configuration, inventory management, and performance and
fault data collection.

Riverstone Networks, Inc.com

Agency Contact:
Natalie Godsell
Fleishman -Hillard
44-20-7395-7068
godselln@fleishmaneurope.

faltstrom weider

com

About Data Connection

Data Connection Limited (DCL) is the leading independent developer
and supplier of Unicast and Multicast IP Routing, MPLS, SIP,
MGCP/Megaco, ATM, and SNA portable products, as well as Web
Conferencing , Voicemail, Unified Messaging, and Directory
applications.

, a municipal service provider in England
plans to deploy the new routers. "There has been a need for a solution like
this for a long time," said Henrik Bremerskov, Head of Technology, Updata.
Riverstone allows carriers to offer new services over existing revenue-
generating networks permitting them to evolve to a next generation Ethernet
infrastructure.

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News at a Glance.

In Full.
Both the QNX Neutrino RTOS and the Data Connection protocol stacks
have been engineered for scalability and high availability, allowing
customers to build distributed, self-healing systems that offer a high
degree of fault tolerance and software upgradeability.

Data Connection is a trademark of Data Connection Limited and Data
Connection Corporation.
The introduction of these routers fulfills the market's previously unaddressed
need for a compact, fully-featured platform that extends the benefits of VPLS
as close to the service-users as possible. These forward-looking statements
speak only as of the date hereof and are subject to risks and uncertainties
that may cause actual results to differ materially.

stac st2

and Data Connection Ltd. The company's MetaSwitch division supplies the
industry's leading Class 5 Softswitch , with both integrated (Compact
Softswitch) and distributed architecture options including call agent ,
feature server, media gateway and signaling gateway functionality. "Compact and affordable MPLS / VPLS
access solutions can be particularly liberating for small service providers
and municipal network operators for whom the cost barrier is
disproportionately high. It
supports up to 20 triple-speed copper or fiber downlinks, and four Gig-E
uplinks. These risks and
uncertainties include unforeseen delays in commercial release of the products,
costs to manufacture or procure components that could affect pricing,
development delays that could impact which features are available immediately
upon commercial release of the products, and future changes in customer
evaluation and deployment plans of which Riverstone is currently unaware,
along with those risks and uncertainties detailed from time to time in
Riverstone Networks' SEC reports, including the reports on Form 10 -Q and Form
8-K filed on September 2, 2004 .

multilink iesg

The offering includes support for IP routing such as DC-OSPF,
DC-ISIS, DC-RIP, and DC-BGP, as well as multicast, VoIP, MPLS, VPNs,
GMPLS, and ATM.

Companies like Cisco, DaimlerChrysler, Lockheed Martin,
Panasonic, Siemens, and General Electric rely on QNX technology to
build ultra-reliable systems for the networking, automotive, medical,
military , and industrial automation markets., Carrier Ethernet pioneer
Riverstone Networks (OTC: RSTN. The two new MPLS-based Ethernet routers tear down the
barriers to mass carrier Ethernet deployments by giving Tier One carriers and
competitive service providers the high reliability and scalability needed to
successfully deliver next generation business and residential triple play
services in a high quality, low-cost platform. Such an operating system can increase routing reliability by a full
order of magnitude, according to a recent report by the consulting firm
Network Strategy Partners(1).
Available in fourth quarter 2005, the 15100 provides an Ethernet-optimized
alternative to Riverstone 's multi-service oriented RS 1100 and 3100.

ipsilon wch

The CD showcases Data Connection's routing and VPN
technologies , with full integration of the QNX Neutrino RTOS. Customers include BT, Cisco, IBM, Lucent,
Microsoft , and Verizon.com

About Silicon + Software Systems

Silicon + Software Systems Ltd.

wollman st2

As part of the agreement, the two companies have already ported
Data Connection's entire suite of networking protocols to QNX's
flagship product, the QNX(R) Neutrino(R) realtime operating system
(RTOS).
Net profits have exceeded 20% of revenue every year since the
company was founded in 1981. Visit www. Riverstone 15100 and 15200 Tear Down Barriers to Mass Carrier Ethernet
Deployments

SANTA CLARA, Calif. This unique capability at the network edge,
combined with the resiliency and traffic engineering attributes of MPLS, gives
service providers a truly carrier-grade Ethernet solution.

varadhan venters

. Visit http://www.
embeddedMIND enables manufacturers of networking equipment to easily
integrate advanced multi-protocol agent functionality, supporting CLI,
SNMP, XML, Web GUI and TL1 interfaces.

Riverstone Introduces Ground-Breaking Ethernet Access Routers Extending 15000 Product Line

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Business Editors/Technology Editors

LONDON and OTTAWA, Canada----QNX
Software Systems Co.
Priced significantly less than any comparable technology on the market
today, the Riverstone 15100 and the 10 Gig-E Riverstone 15200 extend the
industry -leading feature set of the 15008 Ethernet Edge Router into the access
layer, providing MPLS from the core to the network edge."
UTOPIA, a municipal FTTx network in Utah, is planning to trial the
Riverstone 15100 and 15200. is a leading provider of carrier Ethernet
infrastructure solutions for business and residential communications services.

wollman schoultz

Founded in 1980, QNX
Software Systems maintains offices throughout North America, Europe,
and Asia. "We believe
these new routers have great potential .com

snmpv2 schoultz

The
management interface layer is provided by Silicon + Software Systems'
(S3 ) embeddedMIND multi-protocol agent platform, which is
pre-integrated to provide a complete solution .

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."

QNX, Data Connection Hold Joint Webinar

A joint TechOnline webinar that reviews the benefits of the Data
Connection/QNX solution will be held on May 26 of this year.

Availability

To obtain a copy of the Data Connection/QNX Router-in-a-Box
evaluation CD, contact QNX at info@qnx.

About QNX Software Systems

With millions of installations worldwide, QNX Software Systems is
the global leader in realtime, microkernel operating system
technology. With over 300 employees, Data Connection is
headquartered in London, UK with US offices in Alameda, CA,
Boxborough , MA, Dallas, TX, and Reston, VA.

weider wollman

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