Press Release

Zhone Technologies CEO to Speak at the Lehman Brothers Worldwide Wireless and Wireline Conference

Oakland, CA — May 22, 2006 — Zhone Technologies, Inc.(NASDAQ: ZHNE), a worldwide leading supplier of VoIP and IPTV equipment for Copper and Fiber access networks, today announced that Mory Ejabat, Chairman and Chief Executive Officer, is participating as an IPTV panelist at the Lehman Brothers Worldwide Wireless and Wireline Conference in New York, NY on Tuesday, May 23, 2006 at 1:30 pm eastern.

Following the live event, an archive of the webcast will be available for replay at http://www.zhone.com/about/investors/ for 30 days.

Related Information

About Zhone Technologies

Zhone Technologies, Inc. (NASDAQ: ZHNE) is a global leader in all IP multi-service access solutions, serving more than 750 of the world's most innovative network operators.

The IP Zhone is the only solution that enables service providers to build the network of the future…today, supporting end-to-end Voice, Data, Entertainment Social Media, Business, Mobile Backhaul and Mobility service.

Zhone is committed to building the fastest and highest quality All IP Multi-Service solution for its customers.

Zhone is headquartered in California and its products are manufactured in the USA in a facility that is emission, waste-water and CFC free.

Contacts:

Zhone Investor Relations
Tel: +1 510-777-7013
Fax: +1 510-777-7001
Email: investor-relations@zhone.com
   Zhone Public Relations
Tel : +1 404-460-8578
Email: aurora.arlet@edelman.com
     

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