Castelle to Host Fax Server Seminar in Los Angeles, March 10th

Castelle® (NASDAQ: CSTL), a leader in 'all-in-one' network fax solutions for the business and enterprise markets, today announced that it will be presenting its family of network fax servers at a seminar in Los Angeles, California on Friday, March 10, 2006. The one-hour seminar will discuss the benefits of implementing a fax server on the network and will include a demonstration of Castelle's latest FaxPress Premier(TM) software, version 4.0.

"We look forward to kicking off yet another year of successful events worldwide," said Scott McDonald, President and CEO of Castelle. "Next week's seminar in Los Angeles will be Castelle's first fax server seminar of the new year, and will be the twelfth major city we've visited since we began our product tour in London, December 2003. One of the Company's major goals in 2006 is to expand into new markets with FaxPress(TM) and FaxPress Premier, and these types of events allow us to market our fax solution to a new audience while educating both new and existing customers on the latest fax server applications."

Castelle's Fax Server Seminar will take place from 10:00 a.m. to 11:00 a.m. on Friday, March 10, at the Hyatt Regency Century Plaza in Los Angeles. For information on attending, please contact Karin Smith at (800) 289 7555 ext. 8034 or register online at www.castelle.com/losangeles .

Castelle will also be presenting in Washington DC, Chicago and New York later this year. For information on these and other upcoming Castelle events, visit the Castelle website at http://www.castelle.com/corporate/calendar.htm .

About Castelle

Castelle, a market leader in 'all-in-one' network fax solutions for business and enterprise, develops office automation systems that allow organizations to easily implement faxing over local area networks and the Internet. Castelle's network fax servers, FaxPress and FaxPress Premier, provide a simple way to integrate fax with email, desktop and back-end applications. Castelle products are designed to be easy to use and maintain, and provide an economical way for companies to share resources over the network. Castelle was founded in 1987 and is headquartered in Morgan Hill, California. Its products are available through a worldwide network of distributors, resellers, and online retailers. Visit Castelle online at www.castelle.com .

If you would like to be added to Castelle's investor email list, please contact Karin Smith at ksmith@castelle.com .

FaxPress(TM) and FaxPress Premier(TM) are trademarks of Castelle. All other trademarks are the property of their respective owners.

Forward-Looking Statements

This press release may contain forward-looking statements. These statements are subject to risks and uncertainties. Investors are referred to the full discussion of risks and uncertainties associated with forward-looking statements as contained in our reports to the Securities and Exchange Commission, including our Forms 10-Q and 10-K. The Company assumes no obligation to update the forward-looking information.

Contact Information: Scott C. McDonald President & Chief Executive Officer Tel. 408.852.8000 Fax 408.852.8100 Karin Smith Director of Marketing Tel. 408.852.8034 Fax 408.852.8134