Castelle to Host Fax Server Seminar in Washington DC, June 1st

Business Wire, May 30, 2006

MORGAN HILL, Calif. -- Castelle(R) (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 Washington DC on Thursday, June 1, 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 new FaxPress Enterprise(TM) digital fax server and FaxPress Plus(TM) 4.0 software.

"Castelle has been conducting fax server seminars worldwide since 2003," said Scott McDonald, President and CEO of Castelle. "Thursday's seminar in Washington DC is another great opportunity for us to meet with both new and existing customers and solution partners. As Castelle continues to expand into new markets, these types of events allow us to meet firsthand with our customers and present to them the latest fax server technology. This week we will be demonstrating our new FaxPress Enterprise fax servers and FaxPress Plus software."

Castelle's range of technology partnerships and integrations makes it an ideal fax solution for companies looking to enhance the efficiency of their network resources. The Company's all-in-one approach to network faxing offers customers all the hardware and software necessary to send and receive faxes from the desktop and integrate with copiers, multi-function printers, document management and workflow systems, telephony devices and PBX systems, email environments and more.

Castelle's Fax Server Seminar will take place from 10:00 a.m. to 11:00 a.m. on Thursday, June 1, at The Ritz-Carlton Tysons Corner in Washington DC. For information on attending, please contact Karin Smith at (800) 289 7555 ext. 8034 or register online at www.castelle.com/washingtondc.> Castelle will also be presenting in Chicago and New York later this year. For information on these and other upcoming Castelle events, visit the Castelle website at www.castelle.com/corporate/calendar.htm.> About Castelle

Castelle (Nasdaq:CSTL), 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(TM), FaxPress Premier(TM), and FaxPress Enterprise(TM) 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.

FaxPress(TM), FaxPress Premier(TM), FaxPress Plus(TM) and FaxPress Enterprise(TM) are trademarks of Castelle.

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

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.