Sycamore Networks Successfully Demonstrates Broadband On-Demand Services in Global Interoperability Event

CHELMSFORD, Mass.--(Business Wire)--
Sycamore Networks, Inc. (NASDAQ: SCMR), an industry leader in intelligent
bandwidth management solutions for network operators worldwide, today announced
the Company has successfully demonstrated multi-vendor interoperability during a
global, multi-carrier test event designed to advance the development and
implementation of end-to-end dynamically provisioned broadband services.

Participating at Verizon`s network laboratory (Waltham, Massachusetts) as part
of the Optical Internetworking Forum`s (OIF) 2009 Worldwide Interoperability
Demonstration, Sycamore successfully demonstrated a wide range of Broadband
On-Demand test configurations including dynamically switched Ethernet Virtual
Private Line (EVPL), end-to-end service restoration using E-NNI (External
Network-to-Network Interface) 2.0 signaling implementation agreement, and
multi-vendor OTN/G.709 transport connectivity.

"Advanced control plane technologies are a key enabler of dynamic optical mesh,
automated end-to-end provisioning, and multi-layer packet/optical service
integration," said Kevin Oye, vice president of systems and technology at
Sycamore Networks. "As a long-standing member of the Optical Internetworking
Forum, we continue to support the OIF`s industry-leading multi-vendor
interoperability initiatives leveraging our experiences helping network
operators around the world yield tangible benefits from deploying dynamic
optical mesh technologies to produce more efficient and agile optical core
networks."

"Interoperability and end-to-end network automation are critical issues for
service providers, who want to reduce manual intervention and drive cost out of
the network," said Ron Kline, Research Director at Ovum. "The latest OIF
interoperability demo moves forward innovative features that are aimed at
reducing network operations, administration, and maintenance costs while also
improving providers' ability to dynamically allocate bandwidth and offer novel
new services."

Products and technologies featured during the multi-vendor test activity
included the Company`s ASON/GMPLS-compliant SN 16000 optical switching platform,
standards-based multi-layer Ethernet transport, dynamic end-to-end provisioning
powered by BroadLeaf intelligent networking software, and the Universal Service
Card (USC), a highly cost-efficient service module that supports - on a single
line card - a broad range of network interfaces, including Gigabit Ethernet, 10
Gigabit Ethernet, SONET/SDH, pluggable optics, and OTN/G.709 transport.

This year`s OIF test event, conducted in carrier labs around the world beginning
in March, culminated in a series of real-time, global network demonstrations
showcased at industry events, including iPOP in Tokyo (June 11), the OIF Carrier
Lab Day at Verizon Laboratory (June 19), and the IIR WDM & Next Generation
Optical Networking Conference in Nice, France (June 25).

For more information regarding the OIF test event, please visit www.oiforum.com.

About Sycamore Networks

Sycamore Networks, Inc. (NASDAQ: SCMR) is a leading provider of intelligent
bandwidth management solutions for fixed line and mobile network operators
worldwide. From multiservice access networks to the optical core, Sycamore
products enable network operators to lower overall network costs, increase
operational efficiencies, and rapidly deploy new revenue-generating services.
Sycamore's global customer base includes Tier 1 service providers, government
agencies, and utility companies. For more information, please visit
www.sycamorenet.com.

About the OIF

Launched in April of 1998, the OIF is the only industry group uniting
representatives from data and optical networking disciplines, including many of
the world's leading carriers, component manufacturers and system vendors. The
OIF promotes the development and deployment of interoperable networking
solutions and services through the creation of Implementation Agreements (IAs)
for optical, interconnect, network processing and component technologies, and
optical networking systems. The OIF actively supports and extends the work of
standards bodies with the goal of promoting worldwide compatibility of optical
internetworking products. Working relationships or formal liaisons have been
established with the Ethernet Alliance, IEEE 802.3, IETF, ITU-T Study Group 13,
ITU-T Study Group 15, IPv6 Forum, MEF, ATIS OPTXS, ATIS TMOC, Rapid I/O, TMF,
UXPi and the XFP MSA Group. Information on the OIF can be found at
www.oiforum.com.

We wish to caution you that certain matters discussed in this news release
constitute forward-looking statements regarding future events that involve risks
and uncertainties. Readers are cautioned that actual results or events could
differ materially from those stated or implied in the forward-looking
statements. Other risks and uncertainties include, but are not limited to,
actions, inquiries and findings that may result from certain stock option
matters, including the restatement of previously issued financial statements and
certain purported shareholder derivative actions filed against the Company and
certain of its current and former officers and directors; the Company's reliance
on a limited number of customers; variation in the Company's quarterly results;
industry pricing pressures and the high cost of product development required to
remain competitive and keep pace with evolving features and technologies desired
by customers; the consolidation of both suppliers and customers in the
telecommunications marketplace and general economic conditions. Certain
additional risks are set forth in more detail in the section entitled "Risk
Factors" in the Company's most recent Quarterly Report on Form 10-Q and Annual
Report on Form 10-K filed by the Company with the Securities and Exchange
Commission. The Company disclaims any intention or obligation to update or
revise any forward-looking statements, whether as a result of new information,
future results or otherwise.

Press Inquiries
Sycamore Networks, Inc.
Scott Larson, 978-250-3433
scott.larson@sycamorenet.com
or
Investor Inquiries
Sycamore Networks, Inc.
Bob Travis, 978-250-3432
bob.travis@sycamorenet.com

Copyright Business Wire 2009