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NII Holdings Expands Cell Network in Mexico with fSONA Optical Wireless and ADC Digivance

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Landmark Optical Wireless Link Connects Base Station with Digivance Remote Antenna System to Extend Nextel Mexico's Mobile Wireless Network

McLean, VA – August 8, 2005 - fSONA Systems today announced that NII Holdings, [NASDAQ National Market: NIHD] Mexican subsidiary, Nextel Mexico, is utilizing fSONA’s SONAbeam® optical wireless solution in conjunction with ADC’s Digivance® Long-Range Coverage Solution (LRCS) to extend coverage of their cellular network. Multiple sites are now successfully installed in Acapulco and Tijuana and more sites are planned for future deployments

The first SONAbeam installation for Nextel Mexico provides coverage to the Tres Vidas Resort and Golf Course in Acapulco. This successful expansion was accomplished with the SONAbeam 1250-M and ADC’s Digivance LRCS.

Digivance is often deployed with dedicated fiber, however, the challenging terrain between Nextel Mexico’s Base Station and the Tres Vidas golf course meant that fiber was impractical leaving SONAbeam optical wireless as the only viable solution for this scenario. Today, Nextel Mexico subscribers enjoy a full complement of leading edge wireless services throughout the Tres Vidas Resort.

Once a technical solution was identified, the challenge was selecting an optical wireless system that could cover the 5 kilometer distance with Nextel Mexico’s service level requirements. Nextel Mexico evaluated other vendors’ systems but determined that fSONA System’s SONAbeam 1250-M was the only product that could provide a stable connection at that range.

“We were looking for an effective way to deliver wireless services to our customers at the Tres Vidas resort,” commented Vice President and CTO of Nextel Mexico, Raúl Ramírez Román. “But the location of the nearest base station meant we couldn’t use fiber. By combining the SONAbeam and Digivance LRCS we hit upon an ideal solution. The Digivance LRCS allows us to use the existing resources from the actual EBTS (Enhanced Base Transceiver Station) to extend capacity to the Resort, and the SONAbeam provides interference-free wireless backhaul at a fraction of the cost of laying fiber.”

“The Digivance system improves wireless networks by extending coverage from existing cell sites to hard-to-reach areas,” said George Reed,  Director of Product Management for ADC’s Active Infrastructure Business Unit. “Optical wireless expands the opportunities for Digivance by providing an alternative to fiber and microwave connections for remote antenna backhaul.”

“At fSONA we have strived to deliver the best quality optical wireless systems capable of providing our customers with high performance communications,” said Sunny Taylor, Chief Executive Officer of fSONA Systems. “This landmark deployment with a major wireless carrier demonstrates that our dedication has paid off and that optical wireless technology is moving into the mainstream of carrier applications.”

ABOUT NII HOLDINGS, INC
NII Holdings, Inc., a publicly held company based in Reston, Va., is a leading provider of mobile communications for business customers in Latin America. NII Holdings, Inc. has operations in Argentina, Brazil, Mexico and Peru, offering a fully integrated wireless communications tool with digital cellular service, text/numeric paging, wireless Internet access and International Direct Connect(SM), an extension of Direct Connect®, a radio feature that allows Nextel subscribers to communicate instantly and across national borders. NII Holdings, Inc. trades on the NASDAQ market under the symbol NIHD. Visit the Company’s website at http://www.nii.com.

ABOUT ADC
ADC provides the connections for wireline, wireless, cable, broadcast, and enterprise networks around the world. ADC's innovative network infrastructure equipment and professional services enable high-speed Internet, data, video, and voice services to residential, business and mobile subscribers. ADC (NASDAQ: ADCT) has sales into more than 150 countries. Learn more about ADC at www.adc.com.

About fSONA
fSONA Systems is recognized as the preferred provider of optical wireless solutions for government, enterprise and service provider markets around the globe. Leveraging leading edge advancements in 1550nm optical transmission, the SONAbeam™ family of systems, based on free-space-optics (FSO), use a globally unlicensed, wireless technology to provide speeds up to 2.5 Gbps over distances up to 7km. For more information visit www.fsona.com or www.free-space-optics.org

Further Information
For more information about fSONA, SONAbeam or Free-Space Optical Wireless, please contact:

604-273-6333
media@fsona.com

fSONA and SONAbeam® are trademarks of fSONA Networks. All other trademarks are properties of their respective companies.