Aperto Networks in First Wave of WiMAX Forum Certification; First to Prove Interoperability between Fujitsu and Intel Silicon; Company Shipping PacketMAX Systems to CETECOM Labs for July Conformance and Interoperability Testing.

WASHINGTON -- Aperto Networks, a leading WiMAX broadband wireless multiservice systems provider serving over 200 operators in more than 60 countries, is shipping its recently announced PacketMAX(TM) product portfolio to the CETECOM certification labs in Malaga, Spain next month. The company will be in the first wave of WiMAX certification to be conducted by CETECOM, the WiMAX Forum's official certification facility. Aperto has also completed internal lab interoperability testing between its Fujitsu silicon-based PacketMAX base station and its Intel silicon-based subscriber unit, thus becoming the first WiMAX vendor to accomplish major Silicon vendor interoperability across a single system.

"By conducting the interoperability between Intel & Fujitsu silicon based systems, Aperto continues on its tradition of firsts and industry leadership," stated Aperto CEO Reza Ahy. "This milestone is a key step towards the promise of WiMAX, where broad-based interoperability will provide service providers with easy-to-deploy and best-of-breed system elements. We have performed substantial conformance testing and pre-staging in our labs for the submission of our PacketMAX portfolio to the CETECOM labs. We are also performing bilateral interoperability with other key players to ensure a smooth process through the WiMAX Forum(TM) defined tests. These steps are part of our plan to be among the first to certify TDD profiles."

As announced in early June, Aperto's PacketMAX system gives carriers the full benefits of a WiMAX Forum-certified solution, a clear path to portability and mobility, powerful voice over IP features, and a common platform shared with Aperto's existing PacketWave(R) architecture. The company expects to begin limited shipments for 3.5 GHz systems during the third quarter of 2005(a), followed shortly by 2.5 GHz and 5 GHz frequencies, supporting all WiMAX Forum TDD profiles in all frequencies.

Aperto will be available to discuss its WiMAX product portfolio at the Wireless Communications Association (WCA) annual conference at the Marriott Wardman Hotel in Washington, D.C this week. Executives will speak on many conference topics during the event. The company will exhibit on the show floor in booth 313 and in Fujitsu and Intel booths.

About Aperto Networks

Aperto(R) Networks is a global leader in WiMAX multiservice broadband wireless access systems, fulfilling the potential of WiMAX through its newly launched PacketMAX(TM) product portfolio. These powerful systems will be in the first wave to be certified in mid-2005 by the WiMAX Forum's CETECOM Test Labs in Spain, and in multiple operators' market trials by end of 2005.

Aperto WiMAX-class systems have been deployed in over 200 operator networks and 60 countries for business and consumer multiservice access, high-performance backhaul and fixed/mobile overlay infrastructures. Aperto's foundational architecture, including best-in-class Quality of Service and OptimaLink per-user link optimization software, powers its newest generation of PacketMAX systems as well as its classic PacketWave(R) solutions. The company delivers end-to-end solutions comprised of modular multi-sector base stations, minimal-install subscriber units, radios and antennas in 2.5, 3.3 - 3.8 and 5 GHz frequencies for point-to-multipoint and point-to-point deployments. Aperto Networks is a founding board member of the WiMAX Forum as well as a founder and lead contributor to IEEE 802.16a/d and the ETSI-BRAN standards. For more information on Aperto Networks, go to www.apertonet.com.

(a) The WiMAX Forum stipulated that first round certification efforts would focus exclusively on 3.5 GHz systems and components. This is the most widely-utilized frequency in the world, although not yet authorized for commercial use in the US.