MRV Communications Fiber-Optic WDM Systems and Out-of-Band Networking Solutions U.S. Department of Defense Approved.

Out-of-Band Networking Solution Will Be First in Industry to Be Both JITC Approved AND FIPS 140-2 Certified

CHATSWORTH, Calif. -- MRV Communications, Inc. (Nasdaq:MRVC), a leading provider of products and services for out-of-band networking, WDM and optical transport, metro Ethernet, fiber-optic components, 10GE and other service aware networking products, today announced that three of its solutions have completed testing by the Joint Interoperability Test Command (JITC). JITC is an organizational element of the Defense Information Systems Agency (DISA) and certifies interoperability for all networking products to be used by agencies of the Department of Defense (DOD).

JITC testing provides a thorough representation of a product's ability to provide protocol compliance, stability, scalability, management and security to DOD networks. MRV has received an Interoperability Assessment and a Standards Conformance certification from the JITC for the Lambda Driver[R] scalable wavelength division multiplexing (WDM) system; Fiber Driver[R] systems for services demarcation, WDM and media conversion; and its LX4000T, the latest in its series of console servers which delivers comprehensive out-of-band networking, supporting serial services, power management and sensor management features. Additionally, the LX4000T is the first console server to have undergone assessment testing through JITC. Full report is available.

JITC interoperability assessments of network components are conducted under the most realistic conditions possible set forth by the Department of Defense. "MRV already has provided the military with valuable solutions, but with the JITC assessment results, we are positioned to provide our highly interoperable solutions to all defense agencies going through any kind of infrastructure modernization and expansion," said Noam Lotan, president and CEO of MRV.

The Lambda Driver optical transport solutions consist of multi-functional, compact and modular wavelength division multiplexing (WDM) systems that can create up to 80 independent virtual fiber-optic links over a single pair of fibers over distances of up to 900 km. The Lambda Driver family supports both DWDM and CWDM technology, and can handle data streams with rates from 1.55 Mbps up to 10 Gbps. The Lambda Driver systems are specifically designed for organizations that require flexible, compact and cost-effective multiplexing and transport of high-speed network, storage, voice and video data.

MRV's Fiber Driver optical multi-service product line provides a full range of solutions like services demarcation, media conversion, signal repeating and fiber-optimization, including coarse and dense WDM capabilities. Both managed and unmanaged solutions are available, including rack-mount, modular systems and desktop systems. The Fiber Driver line includes several families of products with the flexibility of hundreds of combinations and system options for any type of optical or copper technology, covering virtually every protocol in use in networking today.

The LX Series of console servers provides redundancy and security features necessary for out-of-band networking needs. The LX 4000T Series console servers are available in eight-, 16-, 32- and 48-port models. They provide secure out-of-band device configuration and management capabilities for mission critical networks, and "lights out" management of networking and computing equipment in remote installations.

About MRV Communications, Inc.

MRV Communications, Inc. ("MRV") is a leading provider of network equipment and services, and optical components. MRV's networking business provides equipment used by commercial customers, governments and telecommunications service providers, and includes switches, routers, physical layer products and out-of-band management products, as well as specialized networking products for aerospace, defense and other applications, including voice and cellular communication. MRV's optical components business provides optical communications components for metropolitan, access and Fiber-to-the-Premises applications, through its wholly owned subsidiary LuminentOIC, Inc. MRV markets and sells its products worldwide through a variety of channels, including a dedicated direct sales force, manufacturers' representatives, value-added-resellers, distributors and systems integrators. MRV also has operations in Europe that provide network system design, integration and distribution services that include products manufactured by third-party vendors, as well as internally developed and manufactured products. Publicly traded since 1992, MRV is listed on the NASDAQ Global Market under the symbol MRVC. For more information about MRV and its products, please call 818-773-0900 or visit our websites at www.mrv.com and www.luminentoic.com.