05/18/2009

Sycamore Networks Expands Suite of Integrated Switching and Transport Offerings

Enhanced with OTN G.709 capabilities, Sycamore Universal Service Card to be showcased in OIF Broadband On-Demand Global Interoperability Demonstration

Chelmsford, Mass. - Sycamore Networks, Inc. (NASDAQ: SCMR), today announced the addition of Optical Transport Network (OTN) capabilities to its suite of integrated switching and transport offerings on the SN 16000 Intelligent Optical Switching Platform. Already deployed in a Tier 1 carrier network, the industry-standard (ITU-T G.709) interface module expands the rich feature set of Sycamore's Universal Service Card and provides network operators with additional tools to reduce capital and operational costs while improving network efficiencies, reliability, and end-to-end service interoperability. The cost-effective Universal Service Card (USC) for the SN 16000 Intelligent Optical Switching Platform supports - on a single card - a wide range of client service rates and high-speed transport options, including Gigabit Ethernet, 10 Gigabit Ethernet, SONET, SDH, and in-service pluggable optics. Enhanced with the OTN G.709 Line Interface Module (LIM), the full-featured USC further simplifies the design, configuration, and deployment of different traffic types and converged services over dynamic optical transport networks. Leveraging common networking (BroadLeaf®) and management (SILVX®) intelligence shared by all Sycamore optical switches, the Sycamore OTN solution brings a new level of flexibility and efficiency to end-to-end, multi-service transport. The OTN G.709 USC solution supports both the standard Forward Error Correction (FEC) and enhanced FEC optimized for long distance transmission. The standards-based OTN interface module also supports software configurable full C-band tunable optics, which dramatically simplifies wavelength activation and allows network operators to reduce the number of collocated DWDM equipment (e.g., transponders, regenerators) in integrated switching and transport applications. As a result, network operators can achieve significant cost savings by reducing footprint, power, and sparing requirements as the network scales. By further consolidating network functions using Sycamore's OTN-equipped USC, operators can also improve network reliability and enhance end-to-end fault and performance management in multi-vendor networks. Sycamore Participates in OIF Global Interoperability Demonstration The Company also said it is one of ten leading telecommunications equipment suppliers uniting under the banner of the Optical Internetworking Forum to showcase multi-vendor interoperability in a multi-carrier environment at the OIF's Worldwide Interoperability Demonstration - Enabling Broadband On-Demand Services. In addition to its industry-leading BroadLeaf control plane technology, Sycamore will feature the SN 16000 Universal Service Card during this dynamic multi-vendor interoperability event. The OIF's fourth worldwide interoperability test and demonstration will be conducted simultaneously at carrier labs in China, Japan, France, Germany, Italy, and the United States. The event highlights network-interoperable solutions among participating equipment suppliers employing OIF UNI 2.0 and E-NNI implementation agreements. The demo addresses Ethernet Virtual Private Line (EVPL) Services over multiple, control plane-enabled intelligent optical core networks with technologies ranging from Layer 2 transport to OTN. This year's OIF demonstration begins with intra-lab testing among each of the seven participating carrier sites. The test sites are linked via virtual or real E-NNI connections, forming a global test network topology. With the test phase of the event underway since March, the demo will culminate in regional live showcases at iPOP (June 11, Tokyo, Japan); OIF Carrier Day (June, USA); and IIR WDM and Next Generation Networking (June 25, Nice, France, stand 24). More information on the OIF and this industry-leading interoperability event can be found at www.oiforum.com. About the OIF Launched in April of 1998, the OIF unites 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 http://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. 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.

Contact:

Investor Inquiries Investor Relations Sycamore Networks, Inc. Phone: 978-250-3460 investor.info@sycamorenet.com

Press Inquiries Public Relations Sycamore Networks, Inc. Phone: 978-250-3433 media.info@sycamorenet.com