Press Release

Zhone Technologies to Report First Quarter 2007 Financial Results

Oakland, CA — April 3, 2007 — Zhone Technologies, Inc. (NASDAQ: ZHNE), a global provider of advanced communications equipment and a leader in VoIP, IPTV, and Ethernet over both copper and fiber access lines, today announced that the company will report its first quarter 2007 financial results on Thursday, April 19, 2007, after the close of regular market trading.

Zhone will conduct a conference call and audio webcast to discuss further details of its first quarter 2007 results at approximately 2:00 p.m. PT / 5:00 p.m. ET on Thursday, April 19, 2007. This call is open to the public by dialing +1 (866) 700-7173 for U.S. callers and +1 (617) 213-8838 for international callers and then entering passcode 29498674. The audio webcast will be simultaneously available on the Investor Relations section of Zhone's website at http://www.zhone.com/investors/ .

A replay of the conference call will be available for approximately one week after the original call by dialing +1 (888) 286-8010 for U.S. callers and +1 (617) 801-6888 for international callers and then entering passcode 93023453. An audio webcast replay will also be available online at http://www.zhone.com/investors/ for approximately one week following the original call.

About Zhone Technologies, Inc.

Zhone Technologies, Inc. (NASDAQ: ZHNE) is a global provider of advanced communications equipment to more than 600 operators in both emerging and established markets. Zhone’s market-leading Broadband Loop Carrier equipment enables operators to rapidly deploy revenue-generating access services using their existing infrastructure, while providing a migration path to a cost-efficient, all-IP access network. The company’s products address a broad range of applications including residential and business broadband, VoIP, IPTV, and Ethernet over both copper and fiber access lines. Zhone's advanced networking solutions include the Single Line Multi-Service architecture (SLMS™), Multi-Access Line Concentrator (MALC™), Raptor™ ATM/IP DSLAMs, GigaMux™ Optical Transport Systems and Zhone Management System (ZMS™). www.zhone.com

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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