MRV Strengthens Carrier Market Presence

June 1st, 2005

NEWLY CERTIFIED GOLD PARTNER, CBM OF AMERICA, ENHANCES DEPLOYMENT OF
INDUSTRY?S FIRST NEBS CERTIFIED LINUX-BASED CONSOLE SERVER TO CARRIER MARKET
Chatsworth, CA ? June 1, 2005 ? MRV Communications, Inc. (Nasdaq: MRVC), a leading provider of optical Ethernet access solutions, today announced that newly certified MRV gold partner, CBM of America, will market and sell the MRV NEBS certified LX-8000 series of console servers, an industry first, to the carrier marketplace.

CBM of America, a recipient of the prestigious Verizon 2004 Supplier Excellence award, will offer MRV?s line of NEBS-certified console servers in Telco applications that demand high quality and reliability standards, redundant power and NEBS Level-3 certification.

?We are pleased to welcome a company with the caliber of CBM of America as an MRV gold partner. Complementing CBM?s integrated solution, the MRV LX-8000 series is ideal for carriers who need optimal performance, security and reliability,? said Noam Lotan, MRV?s President and CEO. ?In return, CBM?s outreach and understanding of the carrier market will strengthen MRV?s Telco business. We are looking forward to a long and prosperous relationship with CBM.?
"We are extremely excited about partnering with MRV Communications,? commented Michael Stephens, CBM?s President and CEO. ?Our customers are looking for remote management solutions that allow them to monitor, manage and respond to globally distributed networks and systems. With MRV's NEBS certified, secure LX-8020 and LX-8040, our customers finally have a very robust, and extremely cost effective console server solution that?s ideal for in-band, or out-of-band access, within the Central Office or Data Center environment.?

About the LX-8000S Series of Telco NEBS Certified Console Servers
The LX-8000S series of console servers is designed for the management of telecommunications equipment, blade centers and computer clusters in environments that demand a secure and converged remote presence solution with the reliability and survivability of NEBS Level 3 certification. The LX-8000S enables secure connectivity and access to any serial device or equipment console port, real-time visibility of remote site and equipment status, and the ability to immediately respond to remote events or conditions over IP networks. It also provides, console, power and alarm management capabilities. This provides network administrators with the means to proactively respond to remote site management needs, ensuring maximum network uptime and service availability. The advanced feature set of the LX-8000S allows users to substantially lower operational costs by implementing centrally managed lights-out installations without sacrificing management and control. For more information on the LX 8000 Series, please visit http://www.mrv.com/product/MRV-IR-LX8000S/ .

About CBM of America
For over 15 years, CBM of America, Inc. has been recognized as a leader in the switching and telecommunication technology market. CBM is a solution integrator, manufacturing, installation and software company. CBM?s products and services, together with its industry knowledge, technical expertise and quality inventory, have established the company as a reliable and respected provider of innovative solutions and ongoing support. For more information on CBM of America, please call CBM at 800-881-8202 or visit our website at www.cbmusa.com .
About MRV Communications, Inc.
MRV provides network infrastructure equipment and services, and optical components. The Company conducts its business along three principal segments: the networking group, the optical components group and development stage enterprises. MRV?s networking group provides equipment used by commercial customers, governments and telecommunications service providers, and include switches, routers, network physical infrastructure equipment and remote device management equipment as well as specialized networking products for defense and aerospace applications. MRV?s optical components group designs, manufactures and sells optical communications components, primarily through its wholly owned subsidiary LuminentOIC, Inc. These components include components for Fiber-to-the-Premise, or FTTP, applications, fiber optic transceivers, and CWDM applications. The Company markets and sells its products worldwide, through a variety of channels, which include a dedicated direct sales force, manufacturers' representatives, value-added-resellers, distributors and systems integrators. MRV has operations in Europe that provide network system design, integration and distribution services that include products manufactured by third-party vendors, as well as MRV products. Such specialization enhances access to customers and allows the Company to penetrate targeted vertical and regional markets. For more information, call MRV at 818-773-0900 or visit our websites at www.mrv.com and www.luminentoic.com.

Media Relations Contact
PR: David Rodewald
805-494-9508, pr@mrv.com